作者机构:
[Sun, Z Q; Wen, S P; Hou, G Y; Li, Xiaoyu; Liang, H; Dai, H L; Yuan, C Z; Zhao, G; Xu, W; Xiao, S Y; Zhao, Ling; Ma, Q M; Lou, X C; Hou, X T; Zhang, P; Tang, G Y; Batozskaya, V; Liu, P L; Wang, X N; Xiang, B H; Zhang, Z D; Cao, G F; Sun, H K; Yan, X Q; Wang, Y F; Kiuchi, R; Li, Q M; Wang, Y Q; Sun, Y Z; Zhang, J Z; Zhang, J W; Zhang, J Y; Zhang, Z H; Han, T T; Liu, C X; Mo, X H; Hu, Y; Fang, Y Q; Hu, T; Song, W M; Zhu, Z A; Wu, Z; Zheng, W J; Chang, J F; Yuan, Y; Deng, Z Y; Yang, Yifan; Lu, J G; Yu, G; Hu, H M; Zheng, J P; Ma, R Q; Ouyang, Q; Fang, W X; Liu, Huanhuan; Chen, T; Yuan, S C; Fu, Y W; Rong, G; Chen, G; Ding, B; Liu, B J; Zhu, K J; Hou, Z L; Ablikim, M; Xu, C F; Cai, X; Li, L K; Yang, Tao; Li, L J; Ma, H L; Qiu, J F; Zhang, Shuihan; Jiang, D; Liu, Fang; Ma, X T; Ma, X Y; Lu, Y P; Heng, Y K; Qin, Z H; Fang, S S; Wang, B; Sun, S S; Wang, K; Ping, R G; Du, M C; Wang, Z; Liu, H M; Mao, Z P; Yin, J H; Yu, B X; Gong, W X; Kui, X; Lu, Z H; Chen, M L; Li, Ke; Zhu, K; Chen, Z Y; Ji, X L; Zhang, B X; Ji, X B; Zhang, B L; Guan, C Y; Jing, M Q; Li, G; Shi, J Y; Li, F; Lin, T; Zhang, A Q; Li, X; Li, H B; Lu, X L; Xu, G F; Chen, X T; Yang, H X; Gu, M H; Zhang, Yao; Wang, Z Y; Zhang, Y H; Zou, J H; Wu, L H; Wu, L J; Zhang, H Q; Zhou, L P; Chen, H S; Shao, L G; Fu, C D; Zhang, H C; Zhao, J Y; Zhao, J Z; Xing, T Y; Li, W D; Li, W G; He, K L; Ma, M M; Qi, F Z; Qian, S; Yang, Y X; Zhang, X M; Zhang, H Y; Zhao, Y B; Chen, Y B; Sun, G X; Wang, L L; Ning, Z; Huang, Y P; Wang, Meng; Ma, J L; Dong, L Y; Luo, X L; Jiang, X S; Fang, Y; Fang, J; Ye, M; Shen, X Y; Dong, M Y; Cao, N; Miao, H; Shi, X; Ji, Q; Wu, J F; Liu, Z A; Ji, W; Shen, H F; Xie, Y G; Dong, J; Liu, J Y] Institute of High Energy Physics, Beijing 100049, People's Republic of China;[Achasov, M N; Muchnoi, N Yu; Nikolaev, I B] Budker Institute of Nuclear Physics SB RAS (BINP), Novosibirsk 630090, Russia;[Adlarson, P; Schoenning, K; Thoren, V; Kupsc, A; Wolke, M; Johansson, T] Uppsala University, Box 516, SE-75120 Uppsala, Sweden;[Fritsch, M; Heinsius, F H; Wiedner, U; Wollenberg, L; Feldbauer, F; Hölzken, F; Afedulidis, O; Holtmann, T; Hanisch, F; Pelizaeus, M; de Boer, R E; Kopf, B; Kuessner, M] Bochum Ruhr-University, D-44780 Bochum, Germany;[Li, D M; Liu, Y; Zhang, H; Zhang, J; Du, S X; Yu, Y C; Yan, W C; Ai, X C; Zhao, S J; Ke, B C; Zhang, Y T; Ge, L; Qiao, X K] Zhengzhou University, Zhengzhou 450001, People's Republic of China
摘要:
Using data samples collected with the BESIII detector operating at the BEPCII storage ring, the cross section of the inclusive process e^{+}e^{-}→η+X, normalized by the total cross section of e^{+}e^{-}→hadrons, is measured at eight center-of-mass energy points from 2.0000 to 3.6710GeV. These are the first measurements with momentum dependence in this energy region. Our measurement shows a significant discrepancy compared to the existing fragmentation functions. To address this discrepancy, a new QCD analysis is performed at the next-to-next-to-leading order with hadron mass corrections and higher twist effects, which can explain both the established high-energy data and our measurements reasonably well.
作者机构:
[Sun, Z Q; Wen, S P; Hou, G Y; Liang, H; Dai, H L; Yuan, C Z; Zhao, G; Xu, W; Zhao, L; Xiao, S Y; Ma, Q M; Lou, X C; Hou, X T; Zhang, P; Zhang, Y; Tang, G Y; Liu, F; Batozskaya, V; Liu, P L; Wang, X N; Xiang, B H; Zhang, Z D; Cao, G F; Sun, H K; Yan, X Q; Wang, Y F; Kiuchi, R; Li, Q M; Wang, Y Q; Sun, Y Z; Zhang, J Z; Zhang, J W; Zhang, J Y; Zhang, Z H; Han, T T; Yang, T; Liu, C X; Mo, X H; Hu, Y; Fang, Y Q; Hu, T; Song, W M; Zhu, Z A; Wu, Z; Zheng, W J; Chang, J F; Yuan, Y; Deng, Z Y; Lu, J G; Yu, G; Hu, H M; Zheng, J P; Zeng, Y J; Ma, R Q; Ouyang, Q; Fang, W X; Chen, T; Yuan, S C; Fu, Y W; Rong, G; Chen, G; Ding, B; Liu, B J; Zhu, K J; Hou, Z L; Ablikim, M; Xu, C F; Cai, X; Li, L K; Li, L J; Ma, H L; Qiu, J F; Jiang, D; Ma, X T; Ma, X Y; Lu, Y P; Heng, Y K; Qin, Z H; Fang, S S; Wang, B; Sun, S S; Wang, K; Ping, R G; Du, M C; Wang, Z; Liu, H M; Liao, Y P; Zhang, S H; Mao, Z P; Yin, J H; Yu, B X; Liu, H H; Gong, W X; Kui, X; Lu, Z H; Chen, M L; Zhu, K; Chen, Z Y; Ji, X L; Zhang, B X; Ji, X B; Zhang, B L; Guan, C Y; Jing, M Q; Li, K; Li, G; Shi, J Y; Li, F; Lin, T; Zhang, A Q; Li, X; Li, H B; Lu, X L; Xu, G F; Chen, X T; Yang, H X; Gu, M H; Wang, Z Y; Zhang, Y H; Zou, J H; Li, X Y; Wu, L H; Wu, L J; Zhang, H Q; Zhou, L P; Chen, H S; Shao, L G; Fu, C D; Zhang, H C; Zhao, J Y; Zhao, J Z; Xing, T Y; Yang, Y F; Li, W D; Li, W G; He, K L; Ma, M M; Qi, F Z; Qian, S; Yang, Y X; Zhang, X M; Zhang, H Y; Zhao, Y B; Chen, Y B; Sun, G X; Wang, L L; Ning, Z; Huang, Y P; Ma, J L; Dong, L Y; Luo, X L; Jiang, X S; Fang, Y; Fang, J; Ye, M; Shen, X Y; Dong, M Y; Cao, N; Miao, H; Shi, X; Ji, Q; Wu, J F; Liu, Z A; Ji, W; Shen, H F; Xie, Y G; Dong, J; Liu, J Y] Institute of High Energy Physics, Beijing 100049, People's Republic of China;[Achasov, M N; Muchnoi, N Yu; Nikolaev, I B] Budker Institute of Nuclear Physics SB RAS (BINP), Novosibirsk 630090, Russia;[Adlarson, P; Schoenning, K; Thoren, V; Kupsc, A; Wolke, M; Johansson, T] Uppsala University, Box 516, SE-75120 Uppsala, Sweden;[Fritsch, M; Heinsius, F H; Wiedner, U; Wollenberg, L; Feldbauer, F; Hölzken, F; Afedulidis, O; Holtmann, T; Hanisch, F; Pelizaeus, M; de Boer, R E; Kopf, B; Kuessner, M] Bochum Ruhr-University, D-44780 Bochum, Germany;[Li, D M; Liu, Y; Zhang, H; Zhang, J; Du, S X; Yu, Y C; Yan, W C; Ai, X C; Zhao, S J; Ke, B C; Zhang, Y T; Ge, L; Qiao, X K] Zhengzhou University, Zhengzhou 450001, People's Republic of China
摘要:
The J/ψ, ψ(3686)→Σ^{0}Σ[over ¯]^{0} processes and subsequent decays are studied using the world's largest J/ψ and ψ(3686) data samples collected with the BESIII detector. The parity-violating decay parameters of the decays Σ^{0}→Λγ and Σ[over ¯]^{0}→Λ[over ¯]γ, α_{Σ^{0}}=-0.0017±0.0021±0.0018 and α[over ¯]_{Σ^{0}}=0.0021±0.0020±0.0022, are measured for the first time. The strong CP symmetry is tested in the decays of the Σ^{0} hyperons for the first time by measuring the asymmetry A_{CP}^{Σ}=α_{Σ^{0}}+α[over ¯]_{Σ^{0}}=(0.4±2.9±1.3)×10^{-3}. The weak CP test is performed in the subsequent decays of their daughter particles Λ and Λ[over ¯]. Also for the first time, the transverse polarizations of the Σ^{0} hyperons in J/ψ and ψ(3686) decays are observed with opposite directions, and the ratios between the S-wave and D-wave contributions of the J/ψ, ψ(3686)→Σ^{0}Σ[over ¯]^{0} decays are obtained. These results are crucial to understand the decay dynamics of the charmonium states and the production mechanism of the Σ^{0}-Σ[over ¯]^{0} pairs.
作者:
Ablikim, M.;Achasov, M. N.;Adlarson, P.;Afedulidis, O.;Ai, X. C.;...
期刊:
PHYSICAL REVIEW C,2024年110(1) ISSN:2469-9985
通讯作者:
Ablikim, M
作者机构:
[Yu, B. X.; Yu, G.; Hu, T.; Ning, Z.; Zhang, P.; Wen, S. P.; Shi, X.; Sun, G. X.; Ma, M. M.; Chen, T.; Hou, X. T.; Zhu, Z. A.; Xu, G. F.; Wang, K.; Zhou, L. P.; Heng, Y. K.; Ji, Q.; Zhang, J. W.; Chen, Z. Y.; Rong, G.; Guan, C. Y.; Qi, F. Z.; Wang, Y. F.; Wang, L. L.; Ouyang, Q.; Jiang, D.; Liao, Y. P.; Zhang, A. Q.; Ji, X. B.; Qian, S.; Dong, M. Y.; Fang, S. S.; Chang, J. F.; Liu, Z. A.; Yang, T.; Yan, X. Q.; Sun, Z. Q.; Han, T. T.; Wu, J. F.; Sun, S. S.; Ding, B.; Fu, C. D.; Zhang, Y.; Lou, X. C.; Lin, T.; Zhang, B. X.; Xing, T. Y.; Cao, G. F.; Ji, W.; Wu, L. H.; Zhao, Y. B.; Fu, Y. W.; Zheng, J. P.; Jiang, X. S.; Kiuchi, R.; Fang, Y. Q.; Gu, M. H.; Lu, Y. P.; Dong, L. Y.; Zhang, H. Q.; Zhao, G.; Wu, L. J.; Li, L. J.; Yuan, Y.; Lu, X. L.; Wu, Z.; Fang, Y.; Luo, X. L.; Ji, X. L.; Zhang, X. M.; Li, X. Y.; Li, L. K.; Li, H. B.; Liu, F.; Liang, H.; Huang, Y. P.; Zhang, J. Y.; Zhao, L.; Yin, J. H.; Yang, Y. F.; Batozskaya, V.; Song, W. M.; Chen, X. T.; Zhang, J. Z.; He, K. L.; Chen, G.; Ablikim, M.; Liu, C. X.; Li, X.; Zhu, K.; Liu, H. H.; Zhao, J. Z.; Mao, Z. P.; Xiao, S. Y.; Lu, J. G.; Liu, P. L.; Jing, M. Q.; Sun, H. K.; Chen, Y. B.; Du, M. C.; Wang, Z.; Ablikim, M; Zhao, J. Y.; Dong, J.; Shi, J. Y.; Yuan, C. Z.; Tang, G. Y.; Yuan, S. C.; Zhang, H. Y.; Chen, M. L.; Zhang, Z. H.; Hou, G. Y.; Shen, H. F.; Shao, L. G.; Hou, Z. L.; Sun, Y. Z.; Liu, B. J.; Xiang, B. H.; Zhu, K. J.; Liu, H. M.; Xu, C. F.; Ma, H. L.; Ye, M.; Xie, Y. G.; Chen, H. S.; Cao, N.; Ma, X. T.; Deng, Z. Y.; Ma, Q. M.; Wang, Z. Y.; Cai, X.; Zhang, Y. H.; Ma, R. Q.; Zheng, W. J.; Zou, J. H.; Liu, J. Y.; Wang, X. N.; Kui, X.; Li, W. G.; Wang, Y. Q.; Mo, X. H.; Fang, J.; Li, Q. M.; Shen, X. Y.; Ma, X. Y.; Hu, H. M.; Li, K.; Gong, W. X.; Xu, W.; Hu, Y.; Wang, B.; Zhang, B. L.; Ma, J. L.; Yang, Y. X.; Miao, H.; Zhang, S. H.; Li, F.; Lu, Z. H.; Yang, H. X.; Qin, Z. H.; Li, G.; Ping, R. G.; Qiu, J. F.; Zhang, Z. D.; Zhang, H. C.; Dai, H. L.; Li, W. D.; Fang, W. X.; Zeng, Y. J.] Inst High Energy Phys, Beijing 100049, Peoples R China.;[Xu, H. Y.; Yuan, L.] Beihang Univ, Beijing 100191, Peoples R China.;[Afedulidis, O.; Fritsch, M.; Heinsius, F. H.; Kuessner, M.; Hanisch, F.; Wang, S.; Pelizaeus, M.; Kopf, B.; Wollenberg, L.; Holtmann, T.; de Boer, R. E.; Feldbauer, F.; Wiedner, U.; Hoelzken, F.] Bochum Ruhr Univ, D-44780 Bochum, Germany.;[Achasov, M. N.; Nikolaev, I. B.; Muchnoi, N. Yu.] SB RAS, Budker Inst Nucl Phys BINP, Novosibirsk 630090, Russia.;[Briere, R. A.] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA.
通讯机构:
[Ablikim, M ] I;Inst High Energy Phys, Beijing 100049, Peoples R China.
摘要:
Based on (2.712 +/- 0.014) x 10(9) psi(3686) events collected by the BESIII Collaboration, evidence of the hadronic decay h(c) -> (KSK+)-K-0 pi(-) + c.c. is found with a significance of 4.3 sigma in the psi(3686) -> pi(0)h(c) process. The branching fraction of h(c) -> (KSK+)-K-0 pi(-) + c.c. is measured to be (7.3 +/- 1.8 +/- 0.8) x 10(-4), where the first and second uncertainties are statistical and systematic, respectively. Combining with the exclusive decay width of eta(c) -> K (K) over bar pi, our result indicates inconsistencies with both pQCD and NRQCD predictions.
作者:
Ablikim, M.;Achasov, M. N.;Adlarson, P.;Afedulidis, O.;Ai, X. C.;...
期刊:
中国物理C,2024年48(8):083001 ISSN:1674-1137
通讯作者:
Ablikim, M
作者机构:
[Yu, B. X.; Yu, G.; Hu, T.; Ning, Z.; Zhang, P.; Wen, S. P.; Shi, X.; Sun, G. X.; Ma, M. M.; Chen, T.; Hou, X. T.; Zhu, Z. A.; Xu, G. F.; Wang, K.; Zhou, L. P.; Heng, Y. K.; Ji, Q.; Zhang, J. W.; Chen, Z. Y.; Rong, G.; Guan, C. Y.; Qi, F. Z.; Wang, Y. F.; Wang, L. L.; Ouyang, Q.; Jiang, D.; Liao, Y. P.; Zhang, A. Q.; Ji, X. B.; Qian, S.; Dong, M. Y.; Fang, S. S.; Chang, J. F.; Liu, Z. A.; Yang, T.; Yan, X. Q.; Sun, Z. Q.; Han, T. T.; Wu, J. F.; Sun, S. S.; Ding, B.; Fu, C. D.; Zhang, Y.; Lou, X. C.; Lin, T.; Zhang, B. X.; Xing, T. Y.; Cao, G. F.; Ji, W.; Wu, L. H.; Zhao, Y. B.; Fu, Y. W.; Zheng, J. P.; Jiang, X. S.; Kiuchi, R.; Fang, Y. Q.; Gu, M. H.; Lu, Y. P.; Dong, L. Y.; Zhang, H. Q.; Zhao, G.; Wu, L. J.; Li, L. J.; Yuan, Y.; Lu, X. L.; Wu, Z.; Fang, Y.; Luo, X. L.; Ji, X. L.; Zhang, X. M.; Li, X. Y.; Li, L. K.; Li, H. B.; Liu, F.; Liang, H.; Huang, Y. P.; Zhang, J. Y.; Zhao, L.; Yin, J. H.; Yang, Y. F.; Batozskaya, V.; Song, W. M.; Chen, X. T.; Zhang, J. Z.; He, K. L.; Chen, G.; Ablikim, M.; Liu, C. X.; Chang, W. L.; Li, X.; Zhu, K.; Liu, H. H.; Zhao, J. Z.; Mao, Z. P.; Xiao, S. Y.; Lu, J. G.; Liu, P. L.; Jing, M. Q.; Sun, H. K.; Chen, Y. B.; Du, M. C.; Wang, Z.; Ablikim, M; Zhao, J. Y.; Dong, J.; Shi, J. Y.; Yuan, C. Z.; Tang, G. Y.; Yuan, S. C.; Zhang, H. Y.; Chen, M. L.; Zhang, Z. H.; Hou, G. Y.; Shen, H. F.; Shao, L. G.; Hou, Z. L.; Sun, Y. Z.; Liu, B. J.; Xiang, B. H.; Zhu, K. J.; Liu, H. M.; Xu, C. F.; Ma, H. L.; Ye, M.; Xie, Y. G.; Chen, H. S.; Cao, N.; Ma, X. T.; Deng, Z. Y.; Ma, Q. M.; Wang, Z. Y.; Cai, X.; Zhang, Y. H.; Ma, R. Q.; Shi, R. S.; Zheng, W. J.; Zou, J. H.; Liu, J. Y.; Wang, X. N.; Kui, X.; Li, W. G.; Wang, Y. Q.; Mo, X. H.; Fang, J.; Li, Q. M.; Shen, X. Y.; Ma, X. Y.; Hu, H. M.; Li, K.; Gong, W. X.; Xu, W.; Hu, Y.; Wang, B.; Zhang, B. L.; Ma, J. L.; Wang, Meng; Yang, Y. X.; Miao, H.; Zhang, S. H.; Li, F.; Lu, Z. H.; Yang, H. X.; Qin, Z. H.; Li, G.; Ping, R. G.; Qiu, J. F.; Zhang, Z. D.; Zhang, H. C.; Dai, H. L.; Li, W. D.; Fang, W. X.; Zeng, Y. J.] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China.;[Xu, H. Y.; Yuan, L.] Beihang Univ, Beijing 100191, Peoples R China.;[Afedulidis, O.; Fritsch, M.; Heinsius, F. H.; Kuessner, M.; Pelizaeus, M.; Kopf, B.; Wollenberg, L.; Holtmann, T.; de Boer, R. E.; Feldbauer, F.; Wiedner, U.; Holzken, F.] Bochum Ruhr Univ, D-44780 Bochum, Germany.;[Achasov, M. N.; Nikolaev, I. B.; Muchnoi, N. Yu.] Budker Inst Nucl Phys SB RAS BINP, Novosibirsk 630090, Russia.;[Briere, R. A.] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA.
通讯机构:
[Ablikim, M ] C;Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China.
摘要:
<jats:title>Abstract</jats:title>
<jats:p>Using e<jats:sup>+</jats:sup>e<jats:sup>-</jats:sup> annihilation data corresponding to an integrated luminosity of 2.93 fb<jats:sup>-1</jats:sup> taken at the center-of-mass energy √s=3.773 GeV with the BESIII detector, a joint amplitude analysis is performed on the decays D<jats:sup>0</jats:sup>→π<jats:sup>+</jats:sup>π<jats:sup>-</jats:sup>π<jats:sup>+</jats:sup>π<jats:sup>-</jats:sup> and D<jats:sup>0</jats:sup>→π<jats:sup>+</jats:sup>π<jats:sup>-</jats:sup>π<jats:sup>0</jats:sup>π<jats:sup>0</jats:sup>(non-η). The fit fractions of individual components are obtained, and large interferences among the dominant components of the decays D<jats:sup>0</jats:sup>→a<jats:sub>1</jats:sub>(1260)π, D<jats:sup>0</jats:sup>→π(1300)π, D<jats:sup>0</jats:sup>→ρ(770)ρ(770) and D<jats:sup>0</jats:sup>→2(ππ)<jats:sub>S</jats:sub> are found in both channels. With the obtained amplitude model, the CP-even fractions of D<jats:sup>0</jats:sup>→π<jats:sup>+</jats:sup>π<jats:sup>-</jats:sup>π<jats:sup>+</jats:sup>π<jats:sup>-</jats:sup> and D<jats:sup>0</jats:sup>→π<jats:sup>+</jats:sup>π<jats:sup>-</jats:sup>π<jats:sup>0</jats:sup>π<jats:sup>0</jats:sup>(non-η) are determined to be (75.2 ± 1.1<jats:sub>stat.</jats:sub> ± 1.5<jats:sub>syst.</jats:sub>)% and (68.9 ± 1.5<jats:sub>stat.</jats:sub> ± 2.4<jats:sub>syst.</jats:sub>)%, respectively. The branching fractions of D<jats:sup>0</jats:sup>→π<jats:sup>+</jats:sup>π<jats:sup>-</jats:sup>π<jats:sup>+</jats:sup>π<jats:sup>-</jats:sup> and D<jats:sup>0</jats:sup>→π<jats:sup>+</jats:sup>π<jats:sup>-</jats:sup>π<jats:sup>0</jats:sup>π<jats:sup>0</jats:sup>(non-η) are measured to be (0.688 ± 0.010<jats:sub>stat.</jats:sub> ± 0.010<jats:sub>syst.</jats:sub>)% and (0.951 ± 0.025<jats:sub>stat.</jats:sub> ± 0.021<jats:sub>syst.</jats:sub>)%, respectively. The amplitude analysis provides an important model for binning strategy in the measurements of the strong phase parameters of D<jats:sup>0</jats:sup>→4π when used to determine the CKM angle γ(Φ<jats:sub>3</jats:sub>) via the B<jats:sup>-</jats:sup>→DK<jats:sup>-</jats:sup> decay. Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Article funded by SCOAP3 and published under licence by Chinese Physical Society and the Institute of High Energy Physics of the Chinese Academy of Science and the Institute of Modern Physics of the Chinese Academy of Sciences and IOP Publishing Ltd.</jats:p>
作者:
Ablikim, M.;Achasov, M. N.;Adlarson, P.;Afedulidis, O.;Ai, X. C.;...
期刊:
Journal of High Energy Physics,2024年2024(4):1-17 ISSN:1029-8479
通讯作者:
Shen, HF
作者机构:
[Yu, B. X.; Yu, G.; Li, Xiaoyu; Hu, T.; Ning, Z.; Zhang, P.; Wen, S. P.; Shi, X.; Sun, G. X.; Ma, M. M.; Zhao, Ling; Chen, T.; Hou, X. T.; Zhu, Z. A.; Xu, G. F.; Wang, K.; Zhou, L. P.; Heng, Y. K.; Ji, Q.; Zhang, J. W.; Chen, Z. Y.; Rong, G.; Guan, C. Y.; Qi, F. Z.; Wang, Y. F.; Wang, L. L.; Ouyang, Q.; Jiang, D.; Zhang, A. Q.; Ji, X. B.; Qian, S.; Dong, M. Y.; Fang, S. S.; Chang, J. F.; Liu, Z. A.; Yan, X. Q.; Sun, Z. Q.; Han, T. T.; Wu, J. F.; Sun, S. S.; Ding, B.; Fu, C. D.; Lou, X. C.; Lin, T.; Zhang, B. X.; Xing, T. Y.; Cao, G. F.; Ji, W.; Wu, L. H.; Zhao, Y. B.; Fu, Y. W.; Zheng, J. P.; Jiang, X. S.; Kiuchi, R.; Fang, Y. Q.; Gu, M. H.; Lu, Y. P.; Dong, L. Y.; Zhang, H. Q.; Zhao, G.; Wu, L. J.; Li, L. J.; Yang, Yifan; Yuan, Y.; Lu, X. L.; Wu, Z.; Fang, Y.; Luo, X. L.; Ji, X. L.; Zhang, X. M.; Li, L. K.; Li, H. B.; Liang, H.; Huang, Y. P.; Zhang, J. Y.; Yin, J. H.; Batozskaya, V.; Liu, Huanhuan; Song, W. M.; Chen, X. T.; Zhang, J. Z.; He, K. L.; Chen, G.; Ablikim, M.; Liu, C. X.; Li, X.; Zhu, K.; Zhao, J. Z.; Yang, Tao; Mao, Z. P.; Xiao, S. Y.; Lu, J. G.; Liu, P. L.; Jing, M. Q.; Sun, H. K.; Chen, Y. B.; Zhang, Shuihan; Du, M. C.; Wang, Z.; Liu, Fang; Zhao, J. Y.; Dong, J.; Shi, J. Y.; Yuan, C. Z.; Tang, G. Y.; Yuan, S. C.; Zhang, H. Y.; Chen, M. L.; Zhang, Z. H.; Hou, G. Y.; Shen, H. F.; Shao, L. G.; Hou, Z. L.; Sun, Y. Z.; Liu, B. J.; Li, Ke; Xiang, B. H.; Zhu, K. J.; Liu, H. M.; Xu, C. F.; Ma, H. L.; Ye, M.; Xie, Y. G.; Chen, H. S.; Cao, N.; Ma, X. T.; Deng, Z. Y.; Ma, Q. M.; Wang, Z. Y.; Cai, X.; Zhang, Y. H.; Ma, R. Q.; Zheng, W. J.; Zou, J. H.; Zhang, Yao; Liu, J. Y.; Wang, X. N.; Kui, X.; Li, W. G.; Wang, Y. Q.; Mo, X. H.; Fang, J.; Li, Q. M.; Shen, X. Y.; Ma, X. Y.; Hu, H. M.; Gong, W. X.; Xu, W.; Hu, Y.; Wang, B.; Zhang, B. L.; Ma, J. L.; Wang, Meng; Yang, Y. X.; Miao, H.; Li, F.; Lu, Z. H.; Yang, H. X.; Qin, Z. H.; Li, G.; Ping, R. G.; Qiu, J. F.; Zhang, Z. D.; Zhang, H. C.; Dai, H. L.; Li, W. D.; Fang, W. X.] Inst High Energy Phys, Beijing 100049, Peoples R China.;[Yuan, L.] Beihang Univ, Beijing 100191, Peoples R China.;[Afedulidis, O.; Fritsch, M.; Heinsius, F. H.; Kuessner, M.; Pelizaeus, M.; Kopf, B.; Wollenberg, L.; Holtmann, T.; de Boer, R. E.; Feldbauer, F.; Wiedner, U.; Hoelzken, F.] Ruhr Univ Bochum, ICAMS, D-44780 Bochum, Germany.;[Achasov, M. N.; Nikolaev, I. B.; Muchnoi, N. Yu.] SB RAS, BINP, Novosibirsk 630090, Russia.;[Briere, R. A.] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA.
通讯机构:
[Shen, HF ] I;Inst High Energy Phys, Beijing 100049, Peoples R China.;China Ctr Adv Sci & Technol, POB 8730, Beijing 100190, Peoples R China.
摘要:
<jats:title>A<jats:sc>bstract</jats:sc>
</jats:title><jats:p>Using (27<jats:italic>.</jats:italic>12 <jats:italic>±</jats:italic> 0<jats:italic>.</jats:italic>14) <jats:italic>×</jats:italic> 10<jats:sup>8</jats:sup><jats:italic>ψ</jats:italic>(3686) events collected with the BESIII detector at BEPCII, the decay of <jats:italic>ψ</jats:italic>(3686) <jats:italic>→</jats:italic><jats:inline-formula><jats:alternatives><jats:tex-math>$$ {\varOmega}^{-}{K}^{+}{\overline{\Xi}}^0 $$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML">
<mml:msup>
<mml:mi>Ω</mml:mi>
<mml:mo>−</mml:mo>
</mml:msup>
<mml:msup>
<mml:mi>K</mml:mi>
<mml:mo>+</mml:mo>
</mml:msup>
<mml:msup>
<mml:mover>
<mml:mi>Ξ</mml:mi>
<mml:mo>¯</mml:mo>
</mml:mover>
<mml:mn>0</mml:mn>
</mml:msup>
</mml:math></jats:alternatives></jats:inline-formula> + c<jats:italic>.</jats:italic>c<jats:italic>.</jats:italic> is observed for the first time. The branching fraction of this decay is measured to be <jats:inline-formula><jats:alternatives><jats:tex-math>$$ {\mathcal{B}}_{\psi (3686)\to {\varOmega}^{-}{K}^{+}{\overline{\Xi}}^0+\textrm{c}.\textrm{c}.} $$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML">
<mml:msub>
<mml:mi>B</mml:mi>
<mml:mrow>
<mml:mi>ψ</mml:mi>
<mml:mfenced>
<mml:mn>3686</mml:mn>
</mml:mfenced>
<mml:mo>→</mml:mo>
<mml:msup>
<mml:mi>Ω</mml:mi>
<mml:mo>−</mml:mo>
</mml:msup>
<mml:msup>
<mml:mi>K</mml:mi>
<mml:mo>+</mml:mo>
</mml:msup>
<mml:msup>
<mml:mover>
<mml:mi>Ξ</mml:mi>
<mml:mo>¯</mml:mo>
</mml:mover>
<mml:mn>0</mml:mn>
</mml:msup>
<mml:mo>+</mml:mo>
<mml:mi>c</mml:mi>
<mml:mo>.</mml:mo>
<mml:mi>c</mml:mi>
<mml:mo>.</mml:mo>
</mml:mrow>
</mml:msub>
</mml:math></jats:alternatives></jats:inline-formula> = (2<jats:italic>.</jats:italic>78 ± 0<jats:italic>.</jats:italic>40 ± 0<jats:italic>.</jats:italic>18) × 10<jats:sup><jats:italic>−</jats:italic>6</jats:sup>, where the first uncertainty is statistical and the second is systematic. Possible baryon excited states are searched for in this decay, but no evident intermediate state is observed with the current sample size.</jats:p>
作者机构:
[Yu, B. X.; Yu, G.; Li, Xiaoyu; Hu, T.; Ning, Z.; Zhang, P.; Wen, S. P.; Shi, X.; Sun, G. X.; Ma, M. M.; Zhao, Ling; Chen, T.; Hou, X. T.; Zhu, Z. A.; Xu, G. F.; Wang, K.; Zhou, L. P.; Heng, Y. K.; Ji, Q.; Zhang, J. W.; Rong, G.; Guan, C. Y.; Qi, F. Z.; Wang, Y. F.; Wang, L. L.; Ouyang, Q.; Liao, Y. P.; Zhang, A. Q.; Ji, X. B.; Qian, S.; Dong, M. Y.; Zhang, Jiawei; Fang, S. S.; Chang, J. F.; Liu, Z. A.; Yan, X. Q.; Wu, J. F.; Wang, Yaqian; Sun, S. S.; Ding, B.; Fu, C. D.; Lou, X. C.; Lin, T.; Zhang, B. X.; Xing, T. Y.; Cao, G. F.; Wu, L. H.; Zhao, Y. B.; Fu, Y. W.; Zheng, J. P.; Jiang, X. S.; Kiuchi, R.; Gu, M. H.; Lu, Y. P.; Dong, L. Y.; Zhang, H. Q.; Zhao, G.; Wu, L. J.; Li, L. J.; Yang, Yifan; Yuan, Y.; Lu, X. L.; Wu, Z.; Fang, Y.; Luo, X. L.; Ji, X. L.; Zhang, X. M.; Li, L. K.; Li, H. B.; Liang, H.; Huang, Y. P.; Zhang, J. Y.; Yin, J. H.; Batozskaya, V.; Liu, Huanhuan; Chen, X. T.; Zhang, J. Z.; He, K. L.; Chen, G.; Ablikim, M.; Liu, C. X.; Chang, W. L.; Zhu, K.; Zhao, J. Z.; Yang, Tao; Mao, Z. P.; Xiao, S. Y.; Lu, J. G.; Liu, P. L.; Jing, M. Q.; Sun, H. K.; Chen, Y. B.; Zhang, Shuihan; Du, M. C.; Wang, Z.; Ablikim, M; Liu, Fang; Zhao, J. Y.; Dong, J.; Liu, K.; Shi, J. Y.; Wang, H. P.; Yuan, C. Z.; Tang, G. Y.; Yuan, S. C.; Zhang, H. Y.; Chen, M. L.; Zhang, Z. H.; Hou, G. Y.; Shen, H. F.; Shao, L. G.; Hou, Z. L.; Sun, Y. Z.; Liu, B. J.; Li, Ke; Zhu, K. J.; Liu, H. M.; Xu, C. F.; Ma, H. L.; Sun, T.; Ye, M.; Xie, Y. G.; Chen, H. S.; Cao, N.; Deng, Z. Y.; Ma, Q. M.; Wang, Z. Y.; Cai, X.; Yuan, X. Q.; Zhang, Y. H.; Ma, R. Q.; Shi, R. S.; Zheng, W. J.; Zou, J. H.; Zhang, Yao; Liu, J. Y.; Li, W. G.; Wang, Y. Q.; Mo, X. H.; Fang, J.; Shen, X. Y.; Ma, X. Y.; Hu, H. M.; Gong, W. X.; Xu, W.; Hu, Y.; Wang, B.; Zhang, B. L.; Ma, J. L.; Wang, Meng; Yang, Y. X.; Miao, H.; Li, F.; Lu, Z. H.; Yang, H. X.; Qin, Z. H.; Li, G.; Ping, R. G.; Qiu, J. F.; Dai, H. L.; Li, W. D.; Fang, W. X.; Zeng, Y. J.] Inst High Energy Phys, Beijing 100049, Peoples R China.;[Yuan, L.] Beihang Univ, Beijing 100191, Peoples R China.;[Li, Lei] Beijing Inst Petrochem Technol, Beijing 102617, Peoples R China.;[Jaeger, S.; Fritsch, M.; Kuessner, M.; Pelizaeus, M.; Kopf, B.; Wollenberg, L.; Holtmann, T.; de Boer, R. E.; Feldbauer, F.; Wiedner, U.; Heinsius, F. H. H.; Coen, S. C.; Wenzel, C. W.] Bochum Ruhr Univ, D-44780 Bochum, Germany.;[Achasov, M. N.; Nikolaev, I. B.; Muchnoi, N. Yu] Budker Inst Nucl Phys SB RAS BINP, Novosibirsk 630090, Russia.
通讯机构:
[Ablikim, M ] I;Inst High Energy Phys, Beijing 100049, Peoples R China.
摘要:
Based on data samples collected with the BESIII detector at the BEPCII collider, the process e+e- -> E+ E over bar - is studied at center -of -mass energies ffis ffi p = 2.3960, 2.6454, and 2.9000 GeV. Using a fully differential angular description of the final state particles, both the relative magnitude and phase information of the E+ electromagnetic form factors in the timelike region are extracted. The relative phase between the electric and magnetic form factors is determined to be sin AO = -0.67 +/- 0.29(stat) +/- 0.18(syst) at ffis ffi p = 2.3960 GeV, AO = 55 degrees +/- 19 degrees(stat) +/- 14 degrees(syst) at pffisffi = 2.6454 GeV, and 78 degrees +/- 22 degrees(stat) +/- 9 degrees(syst) at ffis ffi p = 2.9000 GeV. For the first time, the phase of the hyperon electromagnetic form factors is explored in a wide range of four -momentum transfer. The evolution of the phase along with fourmomentum transfer is an important input for understanding its asymptotic behavior and the dynamics of baryons.
作者机构:
[Wen, S P; Hou, G Y; Li, Xiaoyu; Liang, H; Dai, H L; Yuan, C Z; Zhao, G; Xu, W; Xiao, S Y; Zhao, Ling; Ma, Q M; Lou, X C; Hou, X T; Zhang, P; Liu, K; Tang, G Y; Batozskaya, V; Liu, P L; Wang, H P; Cao, G F; Sun, H K; Yan, X Q; Wang, Y F; Zhang, Jiawei; Kiuchi, R; Shi, R S; Wang, Y Q; Sun, Y Z; Zhang, J Z; Zhang, J W; Zhang, J Y; Zhang, Z H; Wang, Yaqian; Liu, C X; Mo, X H; Hu, Y; Hu, T; Song, W M; Zhu, Z A; Wu, Z; Zheng, W J; Chang, J F; Yuan, Y; Deng, Z Y; Yang, Yifan; Lu, J G; Yu, G; Hu, H M; Zheng, J P; Zeng, Y J; Ma, R Q; Ouyang, Q; Fang, W X; Liu, Huanhuan; Chen, T; Yuan, S C; Fu, Y W; Rong, G; Chen, G; Ding, B; Liu, B J; Zhu, K J; Hou, Z L; Ablikim, M; Xu, C F; Cai, X; Li, L K; Yang, Tao; Li, L J; Ma, H L; Qiu, J F; Zhang, Shuihan; Liu, Fang; Ma, X Y; Lu, Y P; Heng, Y K; Chang, W L; Qin, Z H; Fang, S S; Wang, B; Sun, S S; Wang, K; Ping, R G; Du, M C; Wang, Z; Liu, H M; Liao, Y P; Mao, Z P; Yin, J H; Yu, B X; Gong, W X; Kui, X; Lu, Z H; Chen, M L; Li, Ke; Zhu, K; Ji, X L; Zhang, B X; Ji, X B; Zhang, B L; Guan, C Y; Jing, M Q; Li, G; Shi, J Y; Li, F; Lin, T; Yuan, X Q; Zhang, A Q; Li, H B; Lu, X L; Xu, G F; Chen, X T; Yang, H X; Gu, M H; Zhang, Yao; Wang, Z Y; Zhang, Y H; Zou, J H; Wu, L H; Wu, L J; Zhang, H Q; Zhou, L P; Chen, H S; Shao, L G; Fu, C D; Zhang, H C; Zhao, J Y; Zhao, J Z; Xing, T Y; Li, W D; Li, W G; He, K L; Ma, M M; Qi, F Z; Qian, S; Yang, Y X; Zhang, X M; Zhang, H Y; Zhao, Y B; Chen, Y B; Sun, G X; Wang, L L; Ning, Z; Huang, Y P; Wang, Meng; Ma, J L; Dong, L Y; Luo, X L; Jiang, X S; Fang, Y; Fang, J; Ye, M; Shen, X Y; Dong, M Y; Cao, N; Miao, H; Shi, X; Ji, Q; Wu, J F; Liu, Z A; Shen, H F; Sun, T; Xie, Y G; Dong, J; Liu, J Y] Institute of High Energy Physics, Beijing 100049, People's Republic of China;[Achasov, M N; Muchnoi, N Yu; Nikolaev, I B] Budker Institute of Nuclear Physics SB RAS (BINP), Novosibirsk 630090, Russia;[Adlarson, P; Schoenning, K; Thoren, V; Kupsc, A; Wolke, M; Johansson, T] Uppsala University, Box 516, SE-75120 Uppsala, Sweden;[Li, D M; Liu, Y; Zhang, J; Du, S X; Yan, W C; Zhang, Q Y; Ai, X C; Zhao, S J; Ke, B C; Zhang, Y T] Zhengzhou University, Zhengzhou 450001, People's Republic of China;[Redmer, C F; Hüsken, N; Schelhaas, Y; Lenz, T; Lellmann, M; Stieler, F; Leithoff, H; Muskalla, J; Gradl, W; Aliberti, R; Heinz, C H; Plura, S; Berger, N; Denig, A] Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, D-55099 Mainz, Germany
摘要:
Using data samples collected with the BESIII detector at the BEPCII collider at center-of-mass energies ranging from 3.80 to 4.95GeV, corresponding to an integrated luminosity of 20 fb^{-1}, a measurement of Born cross sections for the e^{+}e^{-}→D^{0}D[over ¯]^{0} and D^{+}D^{-} processes is presented with unprecedented precision. Many clear peaks in the line shape of e^{+}e^{-}→D^{0}D[over ¯]^{0} and D^{+}D^{-} around the mass range of G(3900), ψ(4040), ψ(4160), Y(4260), and ψ(4415), etc., are foreseen. These results offer crucial experimental insights into the nature of hadron production in the open-charm region.
作者:
Ablikim, M.;Achasov, M. N.;Adlarson, P.;Ai, X. C.;Aliberti, R.;...
期刊:
PHYSICAL REVIEW D,2024年109(1) ISSN:2470-0010
通讯作者:
Ablikim, M
作者机构:
[Yu, B. X.; Yu, G.; Li, Xiaoyu; Hu, T.; Ning, Z.; Zhang, P.; Wen, S. P.; Shi, X.; Sun, G. X.; Ma, M. M.; Zhao, Ling; Chen, T.; Zhu, Z. A.; Xu, G. F.; Wang, K.; Zhou, L. P.; Heng, Y. K.; Ji, Q.; Zhang, J. W.; Rong, G.; Guan, C. Y.; Qi, F. Z.; Wang, Y. F.; Ouyang, Q.; Zhang, A. Q.; Ji, X. B.; Qian, S.; Dong, M. Y.; Zhang, Jiawei; Fang, S. S.; Chang, J. F.; Liu, Z. A.; Yan, X. Q.; Wu, J. F.; Wang, Yaqian; Sun, S. S.; Ding, B.; Fu, C. D.; Lou, X. C.; Lin, T.; Zhang, B. X.; Xing, T. Y.; Cao, G. F.; Wu, L. H.; Zhao, Y. B.; Fu, Y. W.; Zheng, J. P.; Jiang, X. S.; Kiuchi, R.; Gu, M. H.; Lu, Y. P.; Dong, L. Y.; Zhang, H. Q.; Zhao, G.; Wu, L. J.; Li, L. J.; Yang, Yifan; Yuan, Y.; Lu, X. L.; Wu, Z.; Fang, Y.; Luo, X. L.; Ji, X. L.; Zhang, X. M.; Li, L. K.; Li, H. B.; Liang, H.; Huang, Y. P.; Zhang, J. Y.; Yin, J. H.; Batozskaya, V.; Liu, Huanhuan; Song, W. M.; Chen, X. T.; Zhang, J. Z.; He, K. L.; Chen, G.; Ablikim, M.; Liu, C. X.; Chang, W. L.; Zhu, K.; Zhao, J. Z.; Yang, Tao; Mao, Z. P.; Xiao, S. Y.; Lu, J. G.; Liu, P. L.; Jing, M. Q.; Sun, H. K.; Chen, Y. B.; Zhang, Shuihan; Wang, Z.; Ablikim, M; Liu, Fang; K, X.; Zhao, J. Y.; Dong, J.; Liu, K.; Shi, J. Y.; Wang, H. P.; Yuan, C. Z.; Tang, G. Y.; Yuan, S. C.; Zhang, H. Y.; Chen, M. L.; Zhang, Z. H.; Hou, G. Y.; Shen, H. F.; Shao, L. G.; Hou, Z. L.; Sun, Y. Z.; Liu, B. J.; Li, Ke; Zhu, K. J.; Liu, H. M.; Xu, C. F.; Ma, H. L.; Sun, T.; Ye, M.; Xie, Y. G.; Chen, H. S.; Cao, N.; Deng, Z. Y.; Ma, Q. M.; Wang, Z. Y.; Cai, X.; Yuan, X. Q.; Zhang, Y. H.; Ma, R. Q.; Shi, R. S.; Zheng, W. J.; Zou, J. H.; Zhang, Yao; Liu, J. Y.; Li, W. G.; Wang, Y. Q.; Mo, X. H.; Fang, J.; Shen, X. Y.; Ma, X. Y.; Hu, H. M.; Gong, W. X.; Xu, W.; Hu, Y.; Wang, B.; Zhang, B. L.; Ma, J. L.; Wang, Meng; Yang, Y. X.; Miao, H.; Li, F.; Lu, Z. H.; H, X. T.; Yang, H. X.; Qin, Z. H.; Li, G.; Ping, R. G.; Qiu, J. F.; Dai, H. L.; Li, W. D.; Fang, W. X.; Zeng, Y. J.] Inst High Energy Phys, Beijing 100049, Peoples R China.;[Yuan, L.] Beihang Univ, Beijing 100191, Peoples R China.;[Li, Lei] Beijing Inst Petrochem Technol, Beijing 102617, Peoples R China.;[Jaeger, S.; Fritsch, M.; Li, M. H.; Wiedner, U. W.; Pelizaeus, M.; Kuessner, M. K.; Kopf, B.; Wollenberg, L.; Holtmann, T.; de Boer, R. E.; Feldbauer, F.; Heinsius, F. H. H.; Maldaner, S.; Coen, S. C.; Wenzel, C. W.] Bochum Ruhr Univ, D-44780 Bochum, Germany.;[Briere, R. A.] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA.
通讯机构:
[Ablikim, M ] I;Inst High Energy Phys, Beijing 100049, Peoples R China.
摘要:
The Born cross sections and effective form factors of the process e(+) e(-) -> Lambda(Sigma) over bar (0) + c:c: are measured at 14 center-of -mass energy points from 2.3094 to 3.0800 GeV, based on data corresponding to an integrated luminosity of (478.5 +/- 4.8) pb(-1) collected with the BESIII detector. A nonzero Born cross section is observed at the center-of-mass energy of 2.3094 GeV with a statistical significance of more than five standard deviations, and the cross sections at other energies are obtained with improved precision compared to earlier measurements from the BABAR Collaboration. The Born cross-section line shape is described better by a shape considering the strong -interaction effects than by a pQCD motivated functional form.
作者机构:
[Yu, B. X.; Yu, G.; Li, Xiaoyu; Hu, T.; Ning, Z.; Zhang, P.; Wen, S. P.; Shi, X.; Sun, G. X.; Ma, M. M.; Zhao, Ling; Chen, T.; Hou, X. T.; Zhu, Z. A.; Xu, G. F.; Wang, K.; Zhou, L. P.; Heng, Y. K.; Ji, Q.; Zhang, J. W.; Rong, G.; Guan, C. Y.; Qi, F. Z.; Wang, Y. F.; Wang, L. L.; Ouyang, Q.; Zhang, A. Q.; Ji, X. B.; Qian, S.; Dong, M. Y.; Zhang, Jiawei; Fang, S. S.; Chang, J. F.; Liu, Z. A.; Yan, X. Q.; Wu, J. F.; Wang, Yaqian; Sun, S. S.; Ding, B.; Fu, C. D.; Lou, X. C.; Lin, T.; Zhang, B. X.; Hu, J. F.; Xing, T. Y.; Cao, G. F.; Wu, L. H.; Zhao, Y. B.; Fu, Y. W.; Zheng, J. P.; Jiang, X. S.; Kiuchi, R.; Gu, M. H.; Lu, Y. P.; Dong, L. Y.; Zhang, H. Q.; Zhao, G.; Wu, L. J.; Li, L. J.; Liu, B. X.; Yang, Yifan; Yuan, Y.; Lu, X. L.; Wu, Z.; Fang, Y.; Luo, X. L.; Ji, X. L.; Zhang, X. M.; Li, L. K.; Li, H. B.; Liang, H.; Huang, Y. P.; Zhang, J. Y.; Yin, J. H.; Batozskaya, V.; Liu, Huanhuan; Song, W. M.; Chen, X. T.; Zhang, J. Z.; He, K. L.; Chen, G.; Ablikim, M.; Liu, C. X.; Chang, W. L.; Zhu, K.; Zhao, J. Z.; Yang, Tao; Mao, Z. P.; Xiao, S. Y.; Lu, J. G.; Liu, P. L.; Jing, M. Q.; Sun, H. K.; Chen, Y. B.; Zhang, Shuihan; Wang, Z.; Ablikim, M; Liu, Fang; Zhao, J. Y.; Dong, J.; Liu, K.; Shi, J. Y.; Wang, H. P.; Yuan, C. Z.; Tang, G. Y.; Yuan, S. C.; Zhang, H. Y.; Chen, M. L.; Zhang, Z. H.; Hou, G. Y.; Shen, H. F.; Shao, L. G.; Hou, Z. L.; Sun, Y. Z.; Liu, B. J.; Li, Ke; Zhu, K. J.; Liu, H. M.; Xu, C. F.; Ma, H. L.; Sun, T.; Ye, M.; Xie, Y. G.; Chen, H. S.; Cao, N.; Deng, Z. Y.; Ma, Q. M.; Wang, Z. Y.; Cai, X.; Yuan, X. Q.; Zhang, Y. H.; Ma, R. Q.; Shi, R. S.; Zheng, W. J.; Zou, J. H.; Zhang, Yao; Liu, J. Y.; Kui, X.; Li, W. G.; Wang, Y. Q.; Mo, X. H.; Fang, J.; Shen, X. Y.; Ma, X. Y.; Hu, H. M.; Gong, W. X.; Hu, Y.; Wang, B.; Zhang, B. L.; Ma, J. L.; Wang, Meng; Yang, Y. X.; Zhang, Jianyu; Miao, H.; Li, F.; Lu, Z. H.; Yang, H. X.; Qin, Z. H.; Li, G.; Ping, R. G.; Qiu, J. F.; Dai, H. L.; Li, W. D.; Fang, W. X.; Zeng, Y. J.] Inst High Energy Phys, Beijing 100049, Peoples R China.;[Yuan, L.] Beihang Univ, Beijing 100191, Peoples R China.;[Li, Lei; Yuan, L.] Beijing Inst Petrochem Technol, Beijing 100191, Peoples R China.;[Jaeger, S.; Fritsch, M.; Heinsius, F. H.; Kuessner, M.; Wiedner, U. W.; Pelizaeus, M.; Kopf, B.; Wollenberg, L.; Holtmann, T.; de Boer, R. E.; Feldbauer, F.; Maldaner, S.; Coen, S. C.; Wenzel, C. W.] Bochum Ruhr Univ, D-44780 Bochum, Germany.;[Briere, R. A.] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA.
通讯机构:
[Ablikim, M ] I;Inst High Energy Phys, Beijing 100049, Peoples R China.
摘要:
Using e(+)e(-) collision data corresponding to an integrated luminosity of 7.33 fb(-1) recorded by the BESIII detector at center-of-mass energies between 4.128 and 4.226 GeV, we present an analysis of the decay D-s(+) -> pi(+)pi(-)e(+)nu(e), where the D-s(+) is produced via the process e(+)e(-) -> D-s*(+/-) D-s(-/+). We observe the f(0) (980) in the pi(+)pi(-) system and the branching fraction of the decay D-s(+) -> f(0) (980)e(+)nu(e) with f(0)(980) -> pi(+)pi(-) measured to be (1.72 +/- 0.13(stat) +/- 0.10(syst)) x 10(-3), where the uncertainties are statistical and systematic, respectively. The dynamics of the D-s(+) -> f(0)(980)e(+)nu(e) decay are studied with the simple pole parametrization of the hadronic form factor and the Flatte formula describing the f(0)(980) in the differential decay rate, and the product of the form factor f(+)(f0)(0) and the c -> s Cabibbo-Kobayashi-Maskawa matrix element vertical bar V-cs vertical bar is determined for the first time to be f+f0(0)vertical bar V-cs vertical bar = 0.504 +/- 0.017(stat) +/- 0.035(syst). Furthermore, the decay D-s(+) -> f(0)(500)e(+)nu(e) is searched for the first time but no signal is found. The upper limit on the branching fraction of D-s(+) -> f(0)(500)e(+)nu(e), f(0)(500) -> pi(+)pi(-) decay is set to be 3.3 x 10(-4) at 90% confidence level.
作者:
Ablikim, M.;Achasov, M. N.;Adlarson, P.;Aliberti, R.;Amoroso, A.;...
期刊:
PHYSICAL REVIEW D,2024年109(7) ISSN:2470-0010
通讯作者:
Ablikim, M
作者机构:
[Yu, B. X.; Yu, G.; Li, Xiaoyu; Hu, T.; Ning, Z.; Zhang, P.; Wen, S. P.; Shi, X.; Sun, G. X.; Ma, M. M.; Zhao, Ling; Chen, T.; Zhu, Z. A.; Xu, G. F.; Wang, K.; Zhou, L. P.; Heng, Y. K.; Ji, Q.; Zhang, J. W.; Rong, G.; Guan, C. Y.; Qi, F. Z.; Wang, Y. F.; Wang, L. L.; Ouyang, Q.; Zhang, A. Q.; Ji, X. B.; Qian, S.; Dong, M. Y.; Zhang, Jiawei; Fang, S. S.; Chang, J. F.; Wang, Zongyuan; Liu, Z. A.; Yan, X. Q.; Wu, J. F.; Wang, Yaqian; Sun, S. S.; Ding, B.; Fu, C. D.; Lou, X. C.; Lin, T.; Zhang, B. X.; Xing, T. Y.; Cao, G. F.; Wu, L. H.; Zhao, Y. B.; Fu, Y. W.; Zheng, J. P.; Jiang, X. S.; Kiuchi, R.; Gu, M. H.; Lu, Y. P.; Dong, L. Y.; Zhang, H. Q.; Zhao, G.; Wu, L. J.; Li, L. J.; Yang, Yifan; Yuan, Y.; Lu, X. L.; Wu, Z.; Fang, Y.; Luo, X. L.; Ji, X. L.; Zhang, X. M.; Li, L. K.; Li, H. B.; Liang, H.; Huang, Y. P.; Zhang, J. Y.; Yin, J. H.; Batozskaya, V.; Liu, Huanhuan; Song, W. M.; Chen, X. T.; Zhang, J. Z.; He, K. L.; Nisar, S.; Chen, G.; Ablikim, M.; Liu, C. X.; Chang, W. L.; Zhao, J. Z.; Yang, Tao; Mao, Z. P.; Xiao, S. Y.; Lu, J. G.; Liu, P. L.; Jing, M. Q.; Sun, H. K.; Chen, Y. B.; Zhang, Shuihan; Wang, Z.; Ablikim, M; Liu, Fang; Zhao, J. Y.; Dong, J.; Liu, K.; Shi, J. Y.; Wang, H. P.; Yuan, C. Z.; Tang, G. Y.; Yuan, S. C.; Zhang, H. Y.; Chen, M. L.; Zhang, Z. H.; Hou, G. Y.; Shen, H. F.; Shao, L. G.; Hou, Z. L.; Sun, Y. Z.; Liu, B. J.; Li, Ke; Zhu, K. J.; Liu, H. M.; Xu, C. F.; Ma, H. L.; Sun, T.; Ye, M.; Xie, Y. G.; Chen, H. S.; Cao, N.; Deng, Z. Y.; Ma, Q. M.; Wang, Z. Y.; Cai, X.; Yuan, X. Q.; Zhang, Y. H.; Ma, R. Q.; Shi, R. S.; Zheng, W. J.; Zou, J. H.; Zhang, Yao; Liu, J. Y.; Li, W. G.; Wang, Y. Q.; Mo, X. H.; Fang, J.; Shen, X. Y.; Ma, X. Y.; Hu, H. M.; Gong, W. X.; Hu, Y.; Wang, B.; Zhang, B. L.; Ma, J. L.; Wang, Meng; Yang, Y. X.; Miao, H.; Li, F.; Lu, Z. H.; Yang, H. X.; Qin, Z. H.; Li, G.; Ping, R. G.; Qiu, J. F.; Dai, H. L.; Li, W. D.; Fang, W. X.; Zeng, Y. J.] Inst High Energy Phys, Beijing 100049, Peoples R China.;[Yuan, L.] Beihang Univ, Beijing 100191, Peoples R China.;[Li, Lei] Beijing Inst Petrochem Technol, Beijing 102617, Peoples R China.;[Jaeger, S.; Fritsch, M.; Heinsius, F. H.; Kuessner, M.; Pelizaeus, M.; Kopf, B.; Wollenberg, L.; Holtmann, T.; de Boer, R. E.; Feldbauer, F.; Wiedner, U.; Maldaner, S.; Coen, S. C.; Wenzel, C. W.] Bochum Ruhr Univ, D-44780 Bochum, Germany.;[Briere, R. A.] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA.
通讯机构:
[Ablikim, M ] I;Inst High Energy Phys, Beijing 100049, Peoples R China.
摘要:
Based on a sample of (448.1 +/- 2.9) x 10(6) psi(3686) events collected with the BESIII detector at BEPCII, the decays of psi(3686) -> K-Lambda(Xi) over bar (+) + c.c. with (Xi) over bar -> (Lambda) over bar pi(+), (Lambda) over bar -> (p) over bar pi(+) pthorn are studied. We investigate the two excited resonances, Xi(1690)(-) and Xi(1820)(-), which are each observed with large significance (>> 10 sigma) in the K-Lambda invariant mass distributions. A partial wave analysis is performed, and the spin-parities of Xi(1690)(-) and Xi(1820)(-) are measured to be 1/2(-) and 3/2(-), respectively. The masses, widths, and product branching fractions of Xi(1690)(-) and Xi(1820) are also measured.
作者:
Ablikim, M.;Achasov, M. N.;Adlarson, P.;Ai, X. C.;Aliberti, R.;...
期刊:
Journal of High Energy Physics,2024年2024(1) ISSN:1029-8479
通讯作者:
Ablikim, M
作者机构:
[Li, Xiaoyu; Hu, T.; Chen, T.; Hou, X. T.; Heng, Y. K.; Ji, Q.; Guan, C. Y.; Liao, Y. P.; Ji, X. B.; Dong, M. Y.; Fang, S. S.; Chang, J. F.; Ding, B.; Fu, C. D.; Lin, T.; Cao, G. F.; Fu, Y. W.; Jiang, X. S.; Kiuchi, R.; Gu, M. H.; Dong, L. Y.; Li, L. J.; Fang, Y.; Ji, X. L.; Li, L. K.; Li, H. B.; Liang, H.; Huang, Y. P.; Batozskaya, V.; Chen, X. T.; He, K. L.; Chen, G.; Ablikim, M.; Chang, W. L.; Jing, M. Q.; Chen, Y. B.; Du, M. C.; Ablikim, M; Dong, J.; Chen, M. L.; Hou, G. Y.; Hou, Z. L.; Liu, B. J.; Li, Ke; Chen, H. S.; Cao, N.; Deng, Z. Y.; Cai, X.; Kui, X.; Li, W. G.; Fang, J.; Hu, H. M.; Gong, W. X.; Hu, Y.; Li, F.; Li, G.; Dai, H. L.; Li, W. D.; Fang, W. X.] Inst High Energy Phys, Beijing 100049, Peoples R China.;[Yuan, L.] Beihang Univ, Beijing 100191, Peoples R China.;[Li, Lei] Beijing Inst Petrochem Technol, Beijing 102617, Peoples R China.;[Jaeger, S.; Fritsch, M.; Kuessner, M.; Pelizaeus, M.; Kopf, B.; Wollenberg, L.; Holtmann, T.; de Boer, R. E.; Feldbauer, F.; Wiedner, U.; Heinsius, F. H. H.; Coen, S. C.; Wenzel, C. W.] Bochum Ruhr Univ, D-44780 Bochum, Germany.;[Achasov, M. N.; Nikolaev, I. B.; Muchnoi, N. Yu.] Budker Inst Nucl Phys SB RAS BINP, Novosibirsk 630090, Russia.
通讯机构:
[Ablikim, M ] I;Inst High Energy Phys, Beijing 100049, Peoples R China.
关键词:
e(+)-e(-) Experiments;Particle and Resonance Production;Spectroscopy
摘要:
<jats:title>A<jats:sc>bstract</jats:sc>
</jats:title><jats:p>Based on <jats:italic>e</jats:italic><jats:sup>+</jats:sup><jats:italic>e</jats:italic><jats:sup><jats:italic>−</jats:italic></jats:sup> collision data collected at center-of-mass energies from 2.000 to 3.080 GeV by the BESIII detector at the BEPCII collider, a partial wave analysis is performed for the process <jats:italic>e</jats:italic><jats:sup>+</jats:sup><jats:italic>e</jats:italic><jats:sup><jats:italic>−</jats:italic></jats:sup> → <jats:inline-formula><jats:alternatives><jats:tex-math>$$ {K}_S^0{K}_L^0 $$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML">
<mml:msubsup>
<mml:mi>K</mml:mi>
<mml:mi>S</mml:mi>
<mml:mn>0</mml:mn>
</mml:msubsup>
<mml:msubsup>
<mml:mi>K</mml:mi>
<mml:mi>L</mml:mi>
<mml:mn>0</mml:mn>
</mml:msubsup>
</mml:math></jats:alternatives></jats:inline-formula><jats:italic>π</jats:italic><jats:sup>0</jats:sup>. The results allow the Born cross sections of the process <jats:italic>e</jats:italic><jats:sup>+</jats:sup><jats:italic>e</jats:italic><jats:sup><jats:italic>−</jats:italic></jats:sup> → <jats:inline-formula><jats:alternatives><jats:tex-math>$$ {K}_S^0{K}_L^0 $$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML">
<mml:msubsup>
<mml:mi>K</mml:mi>
<mml:mi>S</mml:mi>
<mml:mn>0</mml:mn>
</mml:msubsup>
<mml:msubsup>
<mml:mi>K</mml:mi>
<mml:mi>L</mml:mi>
<mml:mn>0</mml:mn>
</mml:msubsup>
</mml:math></jats:alternatives></jats:inline-formula><jats:italic>π</jats:italic><jats:sup>0</jats:sup>, as well as its subprocesses <jats:italic>e</jats:italic><jats:sup>+</jats:sup><jats:italic>e</jats:italic><jats:sup><jats:italic>−</jats:italic></jats:sup> → <jats:italic>K</jats:italic><jats:sup>∗</jats:sup>(892)<jats:sup>0</jats:sup><jats:inline-formula><jats:alternatives><jats:tex-math>$$ \overline{K} $$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML">
<mml:mover>
<mml:mi>K</mml:mi>
<mml:mo>¯</mml:mo>
</mml:mover>
</mml:math></jats:alternatives></jats:inline-formula><jats:sup>0</jats:sup> and <jats:inline-formula><jats:alternatives><jats:tex-math>$$ {K}_2^{\ast } $$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML">
<mml:msubsup>
<mml:mi>K</mml:mi>
<mml:mn>2</mml:mn>
<mml:mo>∗</mml:mo>
</mml:msubsup>
</mml:math></jats:alternatives></jats:inline-formula>(1430)<jats:sup>0</jats:sup><jats:inline-formula><jats:alternatives><jats:tex-math>$$ \overline{K} $$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML">
<mml:mover>
<mml:mi>K</mml:mi>
<mml:mo>¯</mml:mo>
</mml:mover>
</mml:math></jats:alternatives></jats:inline-formula><jats:sup>0</jats:sup> to be measured. The Born cross sections for <jats:italic>e</jats:italic><jats:sup>+</jats:sup><jats:italic>e</jats:italic><jats:sup><jats:italic>−</jats:italic></jats:sup> → <jats:inline-formula><jats:alternatives><jats:tex-math>$$ {K}_S^0{K}_L^0 $$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML">
<mml:msubsup>
<mml:mi>K</mml:mi>
<mml:mi>S</mml:mi>
<mml:mn>0</mml:mn>
</mml:msubsup>
<mml:msubsup>
<mml:mi>K</mml:mi>
<mml:mi>L</mml:mi>
<mml:mn>0</mml:mn>
</mml:msubsup>
</mml:math></jats:alternatives></jats:inline-formula><jats:italic>π</jats:italic><jats:sup>0</jats:sup> are consistent with previous measurements by BaBar, but with substantially improved precision. The Born cross section lineshape of the process <jats:italic>e</jats:italic><jats:sup>+</jats:sup><jats:italic>e</jats:italic><jats:sup><jats:italic>−</jats:italic></jats:sup><jats:italic>K</jats:italic><jats:sup>∗</jats:sup>(892)<jats:sup>0</jats:sup><jats:inline-formula><jats:alternatives><jats:tex-math>$$ \overline{K} $$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML">
<mml:mover>
<mml:mi>K</mml:mi>
<mml:mo>¯</mml:mo>
</mml:mover>
</mml:math></jats:alternatives></jats:inline-formula><jats:sup>0</jats:sup> is consistent with a vector meson state around 2.2 GeV with a significance of 3.2<jats:italic>σ</jats:italic>. A Breit-Wigner fit determines its mass as <jats:italic>M</jats:italic><jats:sub><jats:italic>Y</jats:italic></jats:sub> = (2164<jats:italic>.</jats:italic>7 <jats:italic>±</jats:italic> 9<jats:italic>.</jats:italic>1 <jats:italic>±</jats:italic> 3<jats:italic>.</jats:italic>1) MeV<jats:italic>/c</jats:italic><jats:sup>2</jats:sup> and its width as Γ<jats:sub><jats:italic>Y</jats:italic></jats:sub> = (32<jats:italic>.</jats:italic>4 <jats:italic>±</jats:italic> 21<jats:italic>.</jats:italic>0 <jats:italic>±</jats:italic> 1<jats:italic>.</jats:italic>8) MeV.</jats:p>
作者:
Ablikim, M.;Achasov, M. N.;Adlarson, P.;Ai, X. C.;Aliberti, R.;...
期刊:
PHYSICAL REVIEW D,2024年109(1) ISSN:2470-0010
通讯作者:
Ablikim, M
作者机构:
[Yu, B. X.; Yu, G.; Li, Xiaoyu; Hu, T.; Ning, Z.; Zhang, P.; Wen, S. P.; Shi, X.; Sun, G. X.; Ma, M. M.; Zhao, Ling; Chen, T.; Hou, X. T.; Zhu, Z. A.; Xu, G. F.; Wang, K.; Zhou, L. P.; Heng, Y. K.; Ji, Q.; Zhang, J. W.; Rong, G.; Guan, C. Y.; Qi, F. Z.; Wang, Y. F.; Wang, L. L.; Ouyang, Q.; Liao, Y. P.; Zhang, A. Q.; Ji, X. B.; Qian, S.; Dong, M. Y.; Zhang, Jiawei; Fang, S. S.; Chang, J. F.; Liu, Z. A.; Yan, X. Q.; Wu, J. F.; Sun, S. S.; Ding, B.; Fu, C. D.; Lou, X. C.; Lin, T.; Zhang, B. X.; Xing, T. Y.; Cao, G. F.; Wu, L. H.; Zhao, Y. B.; Fu, Y. W.; Zheng, J. P.; Jiang, X. S.; Kiuchi, R.; Gu, M. H.; Lu, Y. P.; Dong, L. Y.; Zhang, H. Q.; Zhao, G.; Wu, L. J.; Li, L. J.; Yang, Yifan; Yuan, Y.; Lu, X. L.; Wu, Z.; Fang, Y.; Luo, X. L.; Ji, X. L.; Zhang, X. M.; Li, L. K.; Li, H. B.; Liang, H.; Huang, Y. P.; Zhang, J. Y.; Yin, J. H.; Batozskaya, V.; Liu, Huanhuan; Chen, X. T.; Zhang, J. Z.; He, K. L.; Chen, G.; Ablikim, M.; Liu, C. X.; Chang, W. L.; Zhu, K.; Zhao, J. Z.; Yang, Tao; Mao, Z. P.; Xiao, S. Y.; Lu, J. G.; Liu, P. L.; Jing, M. Q.; Sun, H. K.; Chen, Y. B.; Zhang, Shuihan; Du, M. C.; Wang, Z.; Ablikim, M; Liu, Fang; K, X.; Zhao, J. Y.; Dong, J.; Liu, K.; Shi, J. Y.; Wang, H. P.; Yuan, C. Z.; Tang, G. Y.; Yuan, S. C.; Zhang, H. Y.; Chen, M. L.; Zhang, Z. H.; Hou, G. Y.; Shen, H. F.; Shao, L. G.; Hou, Z. L.; Sun, Y. Z.; Liu, B. J.; Li, Ke; Zhu, K. J.; Liu, H. M.; Xu, C. F.; Ma, H. L.; Sun, T.; Ye, M.; Xie, Y. G.; Chen, H. S.; Cao, N.; Deng, Z. Y.; Ma, Q. M.; Wang, Z. Y.; Cai, X.; Yuan, X. Q.; Zhang, Y. H.; Ma, R. Q.; Shi, R. S.; Zheng, W. J.; Zou, J. H.; Zhang, Yao; Liu, J. Y.; Li, W. G.; Wang, Y. Q.; Mo, X. H.; Fang, J.; Shen, X. Y.; Ma, X. Y.; Hu, H. M.; Gong, W. X.; Xu, W.; Hu, Y.; Wang, B.; Zhang, B. L.; Ma, J. L.; Wang, Meng; Yang, Y. X.; Miao, H.; Li, F.; Lu, Z. H.; Yang, H. X.; Qin, Z. H.; Li, G.; Ping, R. G.; Qiu, J. F.; Dai, H. L.; Li, W. D.; Fang, W. X.; Zeng, Y. J.] Inst High Energy Phys, Beijing 100049, Peoples R China.;[Yuan, L.] Beihang Univ, Beijing 100191, Peoples R China.;[Li, Lei] Beijing Inst Petrochem Technol, Beijing 102617, Peoples R China.;[Jaeger, S.; Fritsch, M.; Kuessner, M.; Pelizaeus, M.; Kopf, B.; De Boer, R. E.; Wollenberg, L.; Holtmann, T.; Feldbauer, F.; Wiedner, U.; Heinsius, F. H. H.; Coen, S. C.; Wenzel, C. W.] Bochum Ruhr Univ, D-44780 Bochum, Germany.;[Achasov, M. N.; Nikolaev, I. B.; Muchnoi, N. Yu.] Budker Inst Nucl Phys SB RAS BINP, Novosibirsk 630090, Russia.
通讯机构:
[Ablikim, M ] I;Inst High Energy Phys, Beijing 100049, Peoples R China.
摘要:
With a data sample corresponding to an integrated luminosity of 11.5 fb(-1) collected with the BESIII detector operating at the BEPCII storage ring, for the first time the light hadron decay chi(c1()3872)->pi(+)pi(-)eta is searched for. While no significant signal is observed, the upper limits at the 90% confidence level for sigma[e(+)e(-)->gamma chi(c1)(3872)]B[chi(c1)(3872)->pi(+)pi(-)eta] at center of mass energies from 4.13 GeV to 4.34 GeV are determined. By normalizing to the chi(c1)(3872)->pi(+)pi(-)J/psi decay channel, a 90% confidence level upper limit for the branching fraction ratio R=B[chi(c1)(3872)->pi(+)pi(-)eta]/B[chi(c1)(3872)->pi(+)pi(-)J/psi]<0.12 is given. These measurements provide important inputs for understanding the internal structure of the chi(c1)(3872) resonance
作者:
Ablikim, M.;Achasov, M. N.;Adlarson, P.;Afedulidis, O.;Ai, X. C.;...
期刊:
PHYSICAL REVIEW D,2024年109(3) ISSN:2470-0010
通讯作者:
Ablikim, M
作者机构:
[Yu, B. X.; Yu, G.; Li, Xiaoyu; Hu, T.; Ning, Z.; Zhang, P.; Wen, S. P.; Shi, X.; Sun, G. X.; Ma, M. M.; Zhao, Ling; Chen, T.; Hou, X. T.; Zhu, Z. A.; Xu, G. F.; Wang, K.; Zhou, L. P.; Heng, Y. K.; Ji, Q.; Zhang, J. W.; Rong, G.; Guan, C. Y.; Qi, F. Z.; Wang, Y. F.; Wang, L. L.; Ouyang, Q.; Liao, Y. P.; Zhang, A. Q.; Ji, X. B.; Qian, S.; Dong, M. Y.; Fang, S. S.; Chang, J. F.; Liu, Z. A.; Yan, X. Q.; Han, T. T.; Wu, J. F.; Sun, S. S.; Ding, B.; Fu, C. D.; Lou, X. C.; Lin, T.; Zhang, B. X.; Xing, T. Y.; Cao, G. F.; Wu, L. H.; Zhao, Y. B.; Fu, Y. W.; Zheng, J. P.; Jiang, X. S.; Kiuchi, R.; Fang, Y. Q.; Gu, M. H.; Lu, Y. P.; Dong, L. Y.; Zhang, H. Q.; Zhao, G.; Wu, L. J.; Li, L. J.; Yang, Yifan; Yuan, Y.; Lu, X. L.; Wu, Z.; Fang, Y.; Luo, X. L.; Ji, X. L.; Zhang, X. M.; Li, L. K.; Li, H. B.; Liang, H.; Huang, Y. P.; Zhang, J. Y.; Yin, J. H.; Batozskaya, V.; Liu, Huanhuan; Chen, X. T.; Zhang, J. Z.; He, K. L.; Chen, G.; Ablikim, M.; Liu, C. X.; Chang, W. L.; Zhu, K.; Zhao, J. Z.; Yang, Tao; Mao, Z. P.; Xiao, S. Y.; Lu, J. G.; Liu, P. L.; Jing, M. Q.; Sun, H. K.; Chen, Y. B.; Zhang, Shuihan; Du, M. C.; Wang, Z.; Ablikim, M; Liu, Fang; K, X.; Zhao, J. Y.; Dong, J.; Shi, J. Y.; Yuan, C. Z.; Tang, G. Y.; Yuan, S. C.; Zhang, H. Y.; Chen, M. L.; Zhang, Z. H.; Hou, G. Y.; Shen, H. F.; Shao, L. G.; Hou, Z. L.; Sun, Y. Z.; Liu, B. J.; Li, Ke; Zhu, K. J.; Liu, H. M.; Xu, C. F.; Ma, H. L.; Ye, M.; Xie, Y. G.; Chen, H. S.; Cao, N.; Deng, Z. Y.; Ma, Q. M.; Wang, Z. Y.; Cai, X.; Zhang, Y. H.; Ma, R. Q.; Shi, R. S.; Zheng, W. J.; Zou, J. H.; Zhang, Yao; Liu, J. Y.; Li, W. G.; Wang, Y. Q.; Mo, X. H.; Fang, J.; Shen, X. Y.; Ma, X. Y.; Hu, H. M.; Gong, W. X.; Xu, W.; Hu, Y.; Wang, B.; Zhang, B. L.; Ma, J. L.; Wang, Meng; Yang, Y. X.; Miao, H.; Li, F.; Lu, Z. H.; Yang, H. X.; Qin, Z. H.; Li, G.; Ping, R. G.; Qiu, J. F.; Zhang, Z. D.; Zhang, H. C.; Dai, H. L.; Li, W. D.; Fang, W. X.; Zeng, Y. J.] Inst High Energy Phys, Beijing 100049, Peoples R China.;[Yuan, L.] Beihang Univ, Beijing 100191, Peoples R China.;[Jaeger, S.; Afedulidis, O.; Fritsch, M.; Heinsius, F. H.; Kuessner, M.; Pelizaeus, M.; Wenzel, C.; Kopf, B.; Wollenberg, L.; Holtmann, T.; de Boer, R. E.; Feldbauer, F.; Wiedner, U.; Coen, S. C.; Holzken, F.] Bochum Ruhr Univ, D-44780 Bochum, Germany.;[Achasov, M. N.; Nikolaev, I. B.; Muchnoi, N. Yu.] Budker Inst Nucl Phys SB RAS BINP, Novosibirsk 630090, Russia.;[Lu, Y.; Liu, Z. A.; Briere, R. A.] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA.
通讯机构:
[Ablikim, M ] I;Inst High Energy Phys, Beijing 100049, Peoples R China.
摘要:
A light scalar X-0 or vector X-1 particles have been introduced as a possible explanation for the (g - 2)(mu) anomaly and dark matter phenomena. Using (8.998 +/- 0.039) x 10(9) J=psi events collected by the BESIII detector, we search for a light muon philic scalar X-0 or vector X-1 in the processes J=psi -> mu(+)mu X--(0,1) with X-0,X-1 invisible decays. No obvious signal is found, and the upper limits on the coupling g'(0,1) between the muon and the X-0,X-1 particles are set to be between 1.1 x 10(-3) and 1.0 x 10(-2) for the X-0,X-1 mass in the range of 1 < M(X-0,X-1) < 1000 MeV=c(2) at 90% credibility level.
作者机构:
[Yu, B. X.; Yu, G.; Li, Xiaoyu; Hu, T.; Ning, Z.; Zhang, P.; Wen, S. P.; Shi, X.; Sun, G. X.; Ma, M. M.; Zhao, Ling; Chen, T.; Hou, X. T.; Zhu, Z. A.; Xu, G. F.; Wang, K.; Zhou, L. P.; Heng, Y. K.; Ji, Q.; Zhang, J. W.; Rong, G.; Guan, C. Y.; Qi, F. Z.; Wang, Y. F.; Wang, L. L.; Ouyang, Q.; Zhang, A. Q.; Ji, X. B.; Qian, S.; Dong, M. Y.; Zhang, Jiawei; Fang, S. S.; Chang, J. F.; Liu, Z. A.; Yan, X. Q.; Gilman, A.; Wu, J. F.; Wang, Yaqian; Sun, S. S.; Ding, B.; Fu, C. D.; Lou, X. C.; Lin, T.; Zhang, B. X.; Xing, T. Y.; Cao, G. F.; Wu, L. H.; Zhao, Y. B.; Fu, Y. W.; Zheng, J. P.; Jiang, X. S.; Kiuchi, R.; Gu, M. H.; Lu, Y. P.; Dong, L. Y.; Zhang, H. Q.; Zhao, G.; Wu, L. J.; Li, L. J.; Yang, Yifan; Yuan, Y.; Lu, X. L.; Wu, Z.; Fang, Y.; Luo, X. L.; Ji, X. L.; Zhang, X. M.; Li, L. K.; Li, H. B.; Liang, H.; Huang, Y. P.; Zhang, J. Y.; Yin, J. H.; Batozskaya, V.; Liu, Huanhuan; Song, W. M.; Chen, X. T.; Zhang, J. Z.; He, K. L.; Nisar, S.; Chen, G.; Ablikim, M.; Liu, C. X.; Chang, W. L.; Zhu, K.; Zhao, J. Z.; Yang, Tao; Mao, Z. P.; Xiao, S. Y.; Lu, J. G.; Liu, P. L.; Jing, M. Q.; Sun, H. K.; Chen, Y. B.; Zhang, Shuihan; Wang, Z.; Ablikim, M; Liu, Fang; Zhao, J. Y.; Dong, J.; Liu, K.; Shi, J. Y.; Wang, H. P.; Yuan, C. Z.; Tang, G. Y.; Yuan, S. C.; Zhang, H. Y.; Chen, M. L.; Zhang, Z. H.; Hou, G. Y.; Shen, H. F.; Shao, L. G.; Hou, Z. L.; Sun, Y. Z.; Liu, B. J.; Li, Ke; Zhu, K. J.; Liu, H. M.; Xu, C. F.; Ma, H. L.; Sun, T.; Ye, M.; Xie, Y. G.; Chen, H. S.; Cao, N.; Deng, Z. Y.; Ma, Q. M.; Wang, Z. Y.; Cai, X.; Yuan, X. Q.; Zhang, Y. H.; Ma, R. Q.; Shi, R. S.; Zheng, W. J.; Zou, J. H.; Zhang, Yao; Liu, J. Y.; Kui, X.; Li, W. G.; Wang, Y. Q.; Mo, X. H.; Fang, J.; Shen, X. Y.; Ma, X. Y.; Hu, H. M.; Gong, W. X.; Hu, Y.; Wang, B.; Zhang, B. L.; Ma, J. L.; Wang, Meng; Yang, Y. X.; Miao, H.; Li, F.; Lu, Z. H.; Yang, H. X.; Qin, Z. H.; Li, G.; Ping, R. G.; Qiu, J. F.; Dai, H. L.; Li, W. D.; Fang, W. X.; Zeng, Y. J.] Inst High Energy Phys, Beijing 100049, Peoples R China.;[Yuan, L.] Beihang Univ, Beijing 100191, Peoples R China.;[Li, Lei] Beijing Inst Petrochem Technol, Beijing 102617, Peoples R China.;[Jaeger, S.; Fritsch, M.; Heinsius, F. H.; Kuessner, M.; Pelizaeus, M.; Kopf, B.; Wollenberg, L.; Holtmann, T.; de Boer, R. E.; Feldbauer, F.; Wiedner, U.; Maldaner, S.; Coen, S. C.; Wenzel, C. W.] Bochum Ruhr Univ, D-44780 Bochum, Germany.;[Briere, R. A.] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA.
通讯机构:
[Ablikim, M ] I;Inst High Energy Phys, Beijing 100049, Peoples R China.
摘要:
By analyzing 7.33 fb(-1) of e(+)e(-) annihilation data collected at center-of-mass energies between 4.128 and 4.226 GeV with the BESIII detector, we report the observation of the semileptonic decay D-s(+) -> eta'mu(+) nu(mu), with a statistical significance larger than 10 sigma, and the measurements of the D-s(+) -> eta mu(+) nu(mu) and D-s(+) -> eta mu(+) nu(mu) and D-s(+) -> eta'mu(+) nu(mu) decay dynamics for the first time. The branching fractions of D-s(+) -> eta'mu(+) nu(mu) and D-s(+) -> eta'mu(+) nu(mu) are determined to be (2.235 +/- 0.051(stat) +/- 0.052(syst))% and (0.801 +/- 0.055(stat) +/- 0.028(syst))%, respectively, with precision improved by factors of 6.0 and 6.6 compared to the previous best measurements. Combined with the results for the decays D-s(+) ->eta e(+)nu(e)e and D-s(+) ->eta'e(+)nu(e), the ratios of the decay widths are examined both inclusively and in several l(+) nu(e) four-momentum transfer ranges. No evidence for lepton flavor universality violation is found within the current statistics. The products of the hadronic form factors f(+,0)(eta()'()) (0) c -> s Cabibbo-Kobayashi-Maskawa matrix element |V-cs | are determined. The results based on the two-parameter series expansion are f(+,0)(eta) (0)|V-cs | = 0.452 +/- 0.010(stat) +/- 0.007(syst) and f(+,0)(eta)' (0)|V-cs | = 0.504 +/- 0.037(stat) +/- 0.012(syst), which help to constrain present models on f(+,0)(eta()'()) (0). The forward-backward asymmetries are determined to be < A(FB) (eta)> = -0.059 +/- 0.031(stat) +/- 0.005(syst) and < A(FB) (eta')> = -0.064 +/- 0.079(stat) +/- 0.006(syst) for the first time, which are consistent with the theoretical calculation.
作者:
Ablikim, M.;Achasov, M. N.;Adlarson, P.;Ai, X. C.;Aliberti, R.;...
期刊:
PHYSICAL REVIEW D,2024年109(3) ISSN:2470-0010
通讯作者:
Ablikim, M
作者机构:
[Yu, B. X.; Yu, G.; Li, Xiaoyu; Hu, T.; Ning, Z.; Zhang, P.; Wen, S. P.; Shi, X.; Sun, G. X.; Ma, M. M.; Zhao, Ling; Chen, T.; Zhu, Z. A.; Xu, G. F.; Wang, K.; Zhou, L. P.; Heng, Y. K.; Ji, Q.; Zhang, J. W.; Rong, G.; Batozskaya, V; Guan, C. Y.; Qi, F. Z.; Wang, Y. F.; Wang, L. L.; Ouyang, Q.; Liao, Y. P.; Zhang, A. Q.; Ji, X. B.; Qian, S.; Dong, M. Y.; Fang, S. S.; Chang, J. F.; Liu, Z. A.; Hou, X.; Yan, X. Q.; Han, T. T.; Wu, J. F.; Wang, Yaqian; Sun, S. S.; Ding, B.; Fu, C. D.; Lou, X. C.; Lin, T.; Zhang, B. X.; Xing, T. Y.; Cao, G. F.; Wu, L. H.; Zhao, Y. B.; Fu, Y. W.; Zheng, J. P.; Jiang, X. S.; Kiuchi, R.; Fang, Y. Q.; Gu, M. H.; Lu, Y. P.; Dong, L. Y.; Zhang, H. Q.; Zhao, G.; Wu, L. J.; Li, L. J.; Yang, Yifan; Yuan, Y.; Lu, X. L.; Wu, Z.; Fang, Y.; Luo, X. L.; Ji, X. L.; Zhang, X. M.; Li, L. K.; Li, H. B.; Liang, H.; Huang, Y. P.; Zhang, J. Y.; Yin, J. H.; Liu, Huanhuan; Song, W. M.; Chen, X. T.; Zhang, J. Z.; He, K. L.; Chen, G.; Ablikim, M.; Liu, C. X.; Chang, W. L.; Zhu, K.; Zhao, J. Z.; Yang, Tao; Mao, Z. P.; Xiao, S. Y.; Lu, J. G.; Liu, P. L.; Jing, M. Q.; Sun, H. K.; Chen, Y. B.; Zhang, Shuihan; Du, M. C.; Wang, Z.; Ablikim, M; Liu, Fang; Zhao, J. Y.; Dong, J.; Liu, K.; Shi, J. Y.; Yuan, C. Z.; Tang, G. Y.; Yuan, S. C.; Zhang, H. Y.; Chen, M. L.; Zhang, Z. H.; Hou, G. Y.; Shen, H. F.; Shao, L. G.; Hou, Z. L.; Sun, Y. Z.; Liu, B. J.; Li, Ke; Zhu, K. J.; Liu, H. M.; Xu, C. F.; Ma, H. L.; Ye, M.; Xie, Y. G.; Chen, H. S.; Cao, N.; Deng, Z. Y.; Ma, Q. M.; Wang, Z. Y.; Cai, X.; Yuan, X. Q.; Zhang, Y. H.; Ma, R. Q.; Shi, R. S.; Zheng, W. J.; Zou, J. H.; Zhang, Yao; Liu, J. Y.; Li, W. G.; Wang, Y. Q.; Mo, X. H.; Fang, J.; Shen, X. Y.; Ma, X. Y.; Hu, H. M.; Gong, W. X.; Xu, W.; Hu, Y.; Wang, B.; Zhang, B. L.; Ma, J. L.; Wang, Meng; Yang, Y. X.; Miao, H.; Li, F.; Lu, Z. H.; Yang, H. X.; Qin, Z. H.; Li, G.; Ping, R. G.; Qiu, J. F.; Zhang, Z. D.; Zhang, H. C.; Dai, H. L.; Li, W. D.; Fang, W. X.; Zeng, Y. J.] Inst High Energy Phys, Beijing 100049, Peoples R China.;[Yuan, L.] Beihang Univ, Beijing 100191, Peoples R China.;[Jaeger, S.; Fritsch, M.; Kuessner, M.; Pelizaeus, M.; Kopf, B.; Wollenberg, L.; Holtmann, T.; de Boer, R. E.; Feldbauer, F.; Wiedner, U.; Heinsius, F. H. H.; Coen, S. C.; Wenzel, C. W.] Bochum Ruhr Univ, D-44780 Bochum, Germany.;[Achasov, M. N.; Nikolaev, I. B.; Chen, C.; Muchnoi, N. Yu.] RAS, SB, Budker Inst Nucl Phys, Novosibirsk 630090, Russia.;[Briere, R. A.] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA.
通讯机构:
[Ablikim, M ] I;Inst High Energy Phys, Beijing 100049, Peoples R China.
摘要:
Based on 7.33 fb-1 of e thorn e- collision data collected at center-of-mass energies between 4.128 and 4.226 GeV with the BESIII detector, the experimental studies of the doubly Cabibbo-suppressed decays D thorn s -> K thorn K thorn pi- and D thorn s -> K thorn K thorn pi-pi 0 are reported. We determine the absolute branching fraction of D thorn s -> K thorn K thorn pi- to be (1.24 thorn 0.28 -0.26 ostat thorn 0.06osyst thorn thorn x 10-4. No significant signal of D thorn s -> K thorn K thorn pi-pi 0 is observed and the upper limit on its decay branching fraction at 90% confidence level is set to be 1.7 x 10-4.
作者:
Ablikim, M.;Achasov, M. N.;Adlarson, P.;Ai, X. C.;Aliberti, R.;...
期刊:
PHYSICAL REVIEW D,2024年109(3) ISSN:2470-0010
通讯作者:
Ablikim, M
作者机构:
[Yu, B. X.; Yu, G.; Li, Xiaoyu; Hu, T.; Ning, Z.; Zhang, P.; Wen, S. P.; Shi, X.; Sun, G. X.; Ma, M. M.; Zhao, Ling; Chen, T.; Zhu, Z. A.; Xu, G. F.; Wang, K.; Zhou, L. P.; Heng, Y. K.; Ji, Q.; Zhang, J. W.; Rong, G.; Batozskaya, V; Guan, C. Y.; Qi, F. Z.; Wang, Y. F.; Wang, L. L.; Ouyang, Q.; Liao, Y. P.; Zhang, A. Q.; Ji, X. B.; Qian, S.; Dong, M. Y.; Fang, S. S.; Chang, J. F.; Liu, Z. A.; Hou, X.; Yan, X. Q.; Han, T. T.; Wu, J. F.; Wang, Yaqian; Sun, S. S.; Ding, B.; Fu, C. D.; Lou, X. C.; Lin, T.; Zhang, B. X.; Xing, T. Y.; Cao, G. F.; Wu, L. H.; Zhao, Y. B.; Fu, Y. W.; Zheng, J. P.; Jiang, X. S.; Kiuchi, R.; Fang, Y. Q.; Gu, M. H.; Lu, Y. P.; Dong, L. Y.; Zhang, H. Q.; Zhao, G.; Wu, L. J.; Li, L. J.; Yang, Yifan; Yuan, Y.; Lu, X. L.; Wu, Z.; Fang, Y.; Luo, X. L.; Ji, X. L.; Zhang, X. M.; Li, L. K.; Li, H. B.; Liang, H.; Huang, Y. P.; Zhang, J. Y.; Yin, J. H.; Liu, Huanhuan; Song, W. M.; Chen, X. T.; Zhang, J. Z.; He, K. L.; Chen, G.; Ablikim, M.; Liu, C. X.; Chang, W. L.; Zhu, K.; Zhao, J. Z.; Yang, Tao; Mao, Z. P.; Xiao, S. Y.; Lu, J. G.; Liu, P. L.; Jing, M. Q.; Sun, H. K.; Chen, Y. B.; Zhang, Shuihan; Du, M. C.; Wang, Z.; Ablikim, M; Liu, Fang; Zhao, J. Y.; Dong, J.; Liu, K.; Shi, J. Y.; Yuan, C. Z.; Tang, G. Y.; Yuan, S. C.; Zhang, H. Y.; Chen, M. L.; Zhang, Z. H.; Hou, G. Y.; Shen, H. F.; Shao, L. G.; Hou, Z. L.; Sun, Y. Z.; Liu, B. J.; Li, Ke; Zhu, K. J.; Liu, H. M.; Xu, C. F.; Ma, H. L.; Ye, M.; Xie, Y. G.; Chen, H. S.; Cao, N.; Deng, Z. Y.; Ma, Q. M.; Wang, Z. Y.; Cai, X.; Yuan, X. Q.; Zhang, Y. H.; Ma, R. Q.; Shi, R. S.; Zheng, W. J.; Zou, J. H.; Zhang, Yao; Liu, J. Y.; Li, W. G.; Wang, Y. Q.; Mo, X. H.; Fang, J.; Shen, X. Y.; Ma, X. Y.; Hu, H. M.; Gong, W. X.; Xu, W.; Hu, Y.; Wang, B.; Zhang, B. L.; Ma, J. L.; Wang, Meng; Yang, Y. X.; Miao, H.; Li, F.; Lu, Z. H.; Yang, H. X.; Qin, Z. H.; Li, G.; Ping, R. G.; Qiu, J. F.; Zhang, Z. D.; Zhang, H. C.; Dai, H. L.; Li, W. D.; Fang, W. X.; Zeng, Y. J.] Inst High Energy Phys, Beijing 100049, Peoples R China.;[Yuan, L.] Beihang Univ, Beijing 100191, Peoples R China.;[Jaeger, S.; Fritsch, M.; Kuessner, M.; Pelizaeus, M.; Kopf, B.; Wollenberg, L.; Holtmann, T.; de Boer, R. E.; Feldbauer, F.; Wiedner, U.; Heinsius, F. H. H.; Coen, S. C.; Wenzel, C. W.] Bochum Ruhr Univ, D-44780 Bochum, Germany.;[Achasov, M. N.; Nikolaev, I. B.; Chen, C.; Muchnoi, N. Yu.] RAS, SB, Budker Inst Nucl Phys, Novosibirsk 630090, Russia.;[Briere, R. A.] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA.
通讯机构:
[Ablikim, M ] I;Inst High Energy Phys, Beijing 100049, Peoples R China.
摘要:
Using a sample of 10 billion J/psi events collected with the BESIII detector, the decays eta' -> pi())pi(-)pi())pi(-), eta' -> pi())pi(-)pi(0)pi(0 )and eta'-> 4 pi(0 )are studied via the process J/psi -> gamma eta'. The branching fractions of eta'->pi())pi(-)pi())pi(- )and eta'->pi())pi(-)pi(0)pi(0 )are measured to be(8.56 +/- 0.25(stat)+/- 0.23(syst))x10(-5 )and (2.12 +/- 0.12(stat)+/- 0.10(syst))x10(-4), respectively, which are consistent with previous measurements but with improved precision. No significant eta'-> 4 pi(0 )signal is observed, and the upper limit on the branching fraction of this decay is determined to be less than 1.24x10(-5 )at the 90% confidence level. In addition, an amplitude analysis of eta'->pi)pi-pi)pi-is performed to extract the doubly virtual isovector form factor alpha for the first time. The measured value of alpha = 1.22 +/- 0.33(stat) +/- 0.04(syst), is in agreement with the prediction of the vector meson dominance model.
作者机构:
[Yu, B. X.; Yu, G.; Li, Xiaoyu; Hu, T.; Ning, Z.; Zhang, P.; Wen, S. P.; Shi, X.; Sun, G. X.; Ma, M. M.; Zhao, Ling; Chen, T.; Hou, X. T.; Zhu, Z. A.; Xu, G. F.; Wang, K.; Zhou, L. P.; Heng, Y. K.; Ji, Q.; Zhang, J. W.; Rong, G.; Guan, C. Y.; Qi, F. Z.; Wang, Y. F.; Wang, L. L.; Ouyang, Q.; Liao, Y. P.; Zhang, A. Q.; Ji, X. B.; Qian, S.; Dong, M. Y.; Zhang, Jiawei; Fang, S. S.; Chang, J. F.; Liu, Z. A.; Yan, X. Q.; Wu, J. F.; Wang, Yaqian; Sun, S. S.; Ding, B.; Fu, C. D.; Lou, X. C.; Lin, T.; Zhang, B. X.; Xing, T. Y.; Cao, G. F.; Wu, L. H.; Zhao, Y. B.; Fu, Y. W.; Zheng, J. P.; Jiang, X. S.; Kiuchi, R.; Gu, M. H.; Lu, Y. P.; Dong, L. Y.; Zhang, H. Q.; Zhao, G.; Wu, L. J.; Li, L. J.; Yang, Yifan; Yuan, Y.; Lu, X. L.; Wu, Z.; Fang, Y.; Luo, X. L.; Ji, X. L.; Zhang, X. M.; Li, L. K.; Li, H. B.; Liang, H.; Huang, Y. P.; Zhang, J. Y.; Yin, J. H.; Batozskaya, V.; Liu, Huanhuan; Song, W. M.; Chen, X. T.; Zhang, J. Z.; He, K. L.; Nisar, S.; Chen, G.; Ablikim, M.; Liu, C. X.; Chang, W. L.; Zhu, K.; Zhao, J. Z.; Yang, Tao; Mao, Z. P.; Xiao, S. Y.; Lu, J. G.; Liu, P. L.; Jing, M. Q.; Sun, H. K.; Chen, Y. B.; Zhang, Shuihan; Du, M. C.; Wang, Z.; Ablikim, M; Liu, Fang; Zhao, J. Y.; Dong, J.; Liu, K.; Shi, J. Y.; Wang, H. P.; Yuan, C. Z.; Tang, G. Y.; Yuan, S. C.; Zhang, H. Y.; Chen, M. L.; Zhang, Z. H.; Hou, G. Y.; Shen, H. F.; Shao, L. G.; Hou, Z. L.; Sun, Y. Z.; Liu, B. J.; Li, Ke; Zhu, K. J.; Liu, H. M.; Xu, C. F.; Ma, H. L.; Sun, T.; Ye, M.; Xie, Y. G.; Chen, H. S.; Cao, N.; Deng, Z. Y.; Ma, Q. M.; Wang, Z. Y.; Cai, X.; Yuan, X. Q.; Zhang, Y. H.; Ma, R. Q.; Shi, R. S.; Zheng, W. J.; Zou, J. H.; Zhang, Yao; Liu, J. Y.; Li, W. G.; Wang, Y. Q.; Mo, X. H.; Fang, J.; Shen, X. Y.; Ma, X. Y.; Hu, H. M.; Gong, W. X.; Xu, W.; Hu, Y.; Wang, B.; Zhang, B. L.; Ma, J. L.; Wang, Meng; Yang, Y. X.; Miao, H.; Li, F.; Lu, Z. H.; Yang, H. X.; Qin, Z. H.; Li, G.; Ping, R. G.; Qiu, J. F.; Zhang, H. C.; Dai, H. L.; Li, W. D.; Fang, W. X.; Zeng, Y. J.] Inst High Energy Phys, Beijing 100049, Peoples R China.;[Yuan, L.] Beihang Univ, Beijing 100191, Peoples R China.;[Li, Lei] Beijing Inst Petrochem Technol, Beijing 102617, Peoples R China.;[Jaeger, S.; Fritsch, M.; Kuessner, M.; Pelizaeus, M.; Kopf, B.; Wollenberg, L.; Holtmann, T.; de Boer, R. E.; Feldbauer, F.; Wiedner, U.; Heinsius, F. H. H.; Coen, S. C.; Wenzel, C. W.] Bochum Ruhr Univ, D-44780 Bochum, Germany.;[Achasov, M. N.; Nikolaev, I. B.; Muchnoi, N. Yu.] Budker Inst Nucl Phys SB RAS BINP, Novosibirsk 630090, Russia.
通讯机构:
[Ablikim, M ] I;Inst High Energy Phys, Beijing 100049, Peoples R China.
摘要:
Usingo1008744 thorn x106J=psi events collected with the BESIII detector, numerous Xi-and Lambda decay asymmetry parameters are simultaneously determined from the processJ=psi ->Xi- Xi thorn ->Lambda op pi- thorn pi- Lambda o n pi 0 thorn pi thorn and its charge-conjugate channel. The precisions of alpha Lambda 0for Lambda -> n pi 0and alpha Lambda 0for Lambda -> n pi 0compared to world averages are improved by factors of 4 and 1.7, respectively. The ratio of decayasymmetry parameters of Lambda -> n pi 0to that of Lambda -> p pi-,h alpha Lambda 0i=h alpha Lambda-i, is determined to be0.8730.012 thorn 0.011-0.010, where the first and the second uncertainties are statistical and systematic, respectively.The ratio is smaller than unity more than5 sigma, which signifies the existence of the Delta I1/43=2transitionin Lambda for the first time. Besides, we test forCPsymmetry in Xi-->Lambda pi-and in Lambda -> n pi 0with the bestprecision to date
作者机构:
[Yu, B. X.; Yu, G.; Li, Xiaoyu; Hu, T.; Zhang, P.; Wen, S. P.; Shi, X.; Sun, G. X.; Ma, M. M.; Zhao, Ling; Chen, T.; Hou, X. T.; Zhu, Z. A.; Xu, G. F.; Wang, K.; Zhou, L. P.; Heng, Y. K.; Ji, Q.; Zhang, J. W.; Rong, G.; Guan, C. Y.; Qi, F. Z.; Wang, Y. F.; Wang, L. L.; Ouyang, Q.; Liao, Y. P.; Zhang, A. Q.; Ji, X. B.; Qian, S.; Dong, M. Y.; Zhang, Jiawei; Fang, S. S.; Chang, J. F.; Liu, Z. A.; Yan, X. Q.; Wu, J. F.; Wang, Yaqian; Sun, S. S.; Ding, B.; Fu, C. D.; Lou, X. C.; Lin, T.; Zhang, B. X.; Xing, T. Y.; Cao, G. F.; Dbeyssi, A.; Wu, L. H.; Zhao, Y. B.; Fu, Y. W.; Zheng, J. P.; Jiang, X. S.; Kiuchi, R.; Gu, M. H.; Lu, Y. P.; Dong, L. Y.; Zhang, H. Q.; Zhao, G.; Wu, L. J.; Li, L. J.; Liu, B. X.; Yang, Yifan; Yuan, Y.; Lu, X. L.; Wu, Z.; Fang, Y.; Luo, X. L.; Ji, X. L.; Zhang, X. M.; Li, L. K.; Li, H. B.; Liang, H.; Huang, Y. P.; Zhang, J. Y.; Yin, J. H.; Batozskaya, V.; Liu, Huanhuan; Liu, Huihui; Song, W. M.; Chen, X. T.; Zhang, J. Z.; He, K. L.; Nisar, S.; Chen, G.; Ablikim, M.; Bortone, A.; Liu, C. X.; Chang, W. L.; Zhu, K.; He, K. K.; Zhao, J. Z.; Yang, Tao; Mao, Z. P.; Xiao, S. Y.; Lu, J. G.; Liu, P. L.; Jing, M. Q.; Sun, H. K.; Chen, Y. B.; Zhang, Shuihan; Du, M. C.; Wang, Z.; Liu, Fang; Zhao, J. Y.; Dong, J.; Liu, K.; Shi, J. Y.; Wang, H. P.; Zhemchugov, A.; Tang, G. Y.; Yuan, S. C.; Zhang, H. Y.; Chen, M. L.; Zhang, Z. H.; Hou, G. Y.; Shen, H. F.; Shao, L. G.; Hou, Z. L.; Sun, Y. Z.; Liu, B. J.; Li, Ke; Brueggemann, A.; Zhu, K. J.; Liu, H. M.; Xu, C. F.; Ma, H. L.; Sun, T.; Ye, M.; Xie, Y. G.; Chen, H. S.; Cao, N.; Calcaterra, A.; Deng, Z. Y.; Ma, Q. M.; Wang, Z. Y.; Cai, X.; Yuan, X. Q.; Zhang, Y. H.; Ma, R. Q.; Shi, R. S.; Zheng, W. J.; Zou, J. H.; Zhang, Yao; Liu, J. Y.; Li, W. G.; Wang, Y. Q.; Fang, J.; Shen, X. Y.; Ma, X. Y.; Hu, H. M.; Gong, W. X.; Xu, W.; Hu, Y.; Wang, B.; Zhang, B. L.; Ma, J. L.; Wang, Meng; Yang, Y. X.; Miao, H.; Li, F.; Lu, Z. H.; Yang, H. X.; Qin, Z. H.; Li, G.; Ping, R. G.; Qiu, J. F.; Dai, H. L.; Li, W. D.; Fang, W. X.; Zeng, Y. J.] Inst High Energy Phys, Beijing 100049, Peoples R China.;[Yuan, L.] Beihang Univ, Beijing 100191, Peoples R China.;[Li, Lei] Beijing Inst Petrochem Technol, Beijing 102617, Peoples R China.;[Jaeger, S.; Fritsch, M.; Kuessner, M.; Kopf, B.; De Boer, R. E.; Holtmann, T.; Feldbauer, F.; Wiedner, U.; Heinsius, F. H. H.; Coen, S. C.; Wenzel, C. W.] Bochum Ruhr Univ, D-44780 Bochum, Germany.;[Achasov, M. N.] Budker Inst Nucl Phys SB RAS BINP, Novosibirsk 630090, Russia.
摘要:
Based on 4.4 fb^{-1} of e^{+}e^{-} annihilation data collected at the center-of-mass energies between 4.60 and 4.70GeV with the BESIII detector at the BEPCII collider, the pure W-boson-exchange decay Λ_{c}^{+}→Ξ^{0}K^{+} is studied with a full angular analysis. The corresponding decay asymmetry is measured for the first time to be α_{Ξ^{0}K^{+}}=0.01±0.16(stat)±0.03(syst). This result reflects the noninterference effect between the S- and P-wave amplitudes. The phase shift between S- and P-wave amplitudes has two solutions, which are δ_{p}-δ_{s}=-1.55±0.25(stat)±0.05(syst) rad or 1.59±0.25(stat)±0.05(syst) rad.
作者:
Ablikim, M.;Achasov, M. N.;Adlarson, P.;Afedulidis, O.;Ai, X. C.;...
期刊:
PHYSICAL REVIEW D,2024年109(5) ISSN:2470-0010
通讯作者:
Ablikim, M
作者机构:
[Yu, B. X.; Yu, G.; Hu, T.; Ning, Z.; Zhang, P.; Wen, S. P.; Shi, X.; Sun, G. X.; Ma, M. M.; Chen, T.; Hou, X. T.; Zhu, Z. A.; Xu, G. F.; Wang, K.; Zhou, L. P.; Heng, Y. K.; Ji, Q.; Zhang, J. W.; Chen, Z. Y.; Rong, G.; Guan, C. Y.; Qi, F. Z.; Wang, Y. F.; Wang, L. L.; Ouyang, Q.; Liao, Y. P.; Zhang, A. Q.; Ji, X. B.; Qian, S.; Dong, M. Y.; Fang, S. S.; Chang, J. F.; Liu, Z. A.; Yan, X. Q.; Wu, J. F.; Wang, Yaqian; Sun, S. S.; Ding, B.; Fu, C. D.; Zhang, Y.; Lou, X. C.; Lin, T.; Zhang, B. X.; Xing, T. Y.; Cao, G. F.; Wu, L. H.; Zhao, Y. B.; Fu, Y. W.; Zheng, J. P.; Jiang, X. S.; Kiuchi, R.; Gu, M. H.; Lu, Y. P.; Dong, L. Y.; Zhang, H. Q.; Zhao, G.; Wu, L. J.; Li, L. J.; Yuan, Y.; Lu, X. L.; Wu, Z.; Fang, Y.; Luo, X. L.; Ji, X. L.; Zhang, X. M.; Li, X. Y.; Li, L. K.; Li, H. B.; Liu, F.; Liang, H.; Huang, Y. P.; Zhang, J. Y.; Zhao, L.; Yin, J. H.; Yang, Y. F.; Batozskaya, V.; Liu, Huanhuan; Song, W. M.; Chen, X. T.; Zhang, J. Z.; He, K. L.; Chen, G.; Ablikim, M.; Liu, C. X.; Zhu, K.; Zhao, J. Z.; Yang, Tao; Mao, Z. P.; Xiao, S. Y.; Lu, J. G.; Liu, P. L.; Jing, M. Q.; Sun, H. K.; Chen, Y. B.; Du, M. C.; Wang, Z.; Ablikim, M; Zhao, J. Y.; Dong, J.; Liu, K.; Shi, J. Y.; Wang, H. P.; Yuan, C. Z.; Tang, G. Y.; Yuan, S. C.; Zhang, H. Y.; Chen, M. L.; Zhang, Z. H.; Hou, G. Y.; Shen, H. F.; Shao, L. G.; Hou, Z. L.; Sun, Y. Z.; Liu, B. J.; Zhu, K. J.; Liu, H. M.; Xu, C. F.; Ma, H. L.; Sun, T.; Ye, M.; Xie, Y. G.; Chen, H. S.; Cao, N.; Deng, Z. Y.; Ma, Q. M.; Wang, Z. Y.; Cai, X.; Yuan, X. Q.; Zhang, Y. H.; Ma, R. Q.; Zheng, W. J.; Zou, J. H.; Liu, J. Y.; Kui, X.; Li, W. G.; Wang, Y. Q.; Mo, X. H.; Fang, J.; Shen, X. Y.; Ma, X. Y.; Hu, H. M.; Li, K.; Gong, W. X.; Xu, W.; Hu, Y.; Wang, B.; Zhang, B. L.; Ma, J. L.; Yang, Y. X.; Miao, H.; Zhang, S. H.; Li, F.; Lu, Z. H.; Yang, H. X.; Qin, Z. H.; Li, G.; Ping, R. G.; Qiu, J. F.; Dai, H. L.; Li, W. D.; Fang, W. X.] Inst High Energy Phys, Beijing 100049, Peoples R China.;[Xu, H. Y.; Yuan, L.] Beihang Univ, Beijing 100191, Peoples R China.;[Li, Lei] Beijing Inst Petrochem Technol, Beijing 102617, Peoples R China.;[Jaeger, S.; Afedulidis, O.; Fritsch, M.; Li, M. H.; Wiedner, U. W.; Pelizaeus, M.; Kuessner, M. K.; Kopf, B.; Wollenberg, L.; Holtmann, T.; de Boer, R. E.; Feldbauer, F.; Heinsius, F. H. H.; Coen, S. C.; Holzken, F.; Wenzel, C. W.] Bochum Ruhr Univ, D-44780 Bochum, Germany.;[Achasov, M. N.; Nikolaev, I. B.; Muchnoi, N. Yu.] RAS, Budker Inst Nucl Phys, SB, Novosibirsk 630090, Russia.
通讯机构:
[Ablikim, M ] I;Inst High Energy Phys, Beijing 100049, Peoples R China.
摘要:
The Cabbibo-favored decay Lambda thorn c -> Xi 0K thorn pi 0 is studied for the first time using 6.1 fb-1 of e thorn e- collision data at center-of-mass energies between 4.600 and 4.840 GeV, collected with the BESIII detector at the BEPCII collider. With a double-tag method, the branching fraction of the three-body decay Lambda thorn c -> Xi 0K thorn pi 0 is measured to be o7.79 1.46 0.95 thorn x 10-3, where the first and second uncertainties are statistical and systematic, respectively. The branching fraction of the two-body decay Lambda thorn c -> Xi o1530 thorn 0K thorn is o5.99 1.04 0.32 thorn x 10-3, which is consistent with the previous result of o5.02 0.99 0.31 thorn x 10-3. In addition, the upper limit on the branching fraction of the doubly Cabbibo-suppressed decay Lambda thorn c -> nK thorn pi 0 is 7.1 x 10-4 at the 90% confidence level. The upper limits on the branching fractions of Lambda thorn c -> sigma 0K thorn pi 0 and Lambda K thorn pi 0 are also determined to be 1.8 x 10-3 and 2.0 x 10-3, respectively