Measurements of Born cross sections for e+ e- → Λc+ (Λ)over-barc (2595)- + c.c. and e+ e- → Λc+ (Λ)over-barc (2625)- + c.c. at √s=4918.0 and 4950.9 MeV - 成果

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Measurements of Born cross sections for e⁺ e^- → Λ_c⁺ (Λ)over-bar_c (2595)^- + c.c. and e⁺ e^- → Λ_c⁺ (Λ)over-bar_c (2625)^- + c.c. at √s=4918.0 and 4950.9 MeV

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作者信息关键词期刊信息基础信息归属信息摘要

成果类型：

期刊论文

作者：

Ablikim, M.;Achasov, M. N.;Adlarson, P.;Afedulidis, O.;Ai, X. C.;...

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.; 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.; 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.; Chang, W. L.; 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.; Ablikim, M; 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.; Shi, R. S.; 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.; Zeng, Y. J.] 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.] Bochum Ruhr Univ, D-44780 Bochum, Germany.

[Achasov, M. N.; Nikolaev, I. B.; Muchnoi, N. Yu.] RAS, SB, 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.

语种：

英文

期刊：

PHYSICAL REVIEW D

ISSN：

2470-0010

年：

2024

卷：

109

期：

DOI：

10.1103/PhysRevD.109.L071104

基金类别：

National Key R&D Program of China [2020YFA0406300, 2020YFA0406400]; National Natural Science Foundation of China (NSFC) [11635010, 11735014, 11835012, 11935015, 11935016, 11935018, 11961141012, 12025502, 12035009, 12035013, 12061131003, 12192260, 12192261, 12192262, 12192263, 12192264, 12192265, 12221005, 12225509, 12235017, 12005311]; China Postdoctoral Science Foundation [2019M662152, 2020T130636]; Fundamental Research Funds for the Central Universities, University of Science and Technology of China [WK2030000053]; Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program; CAS Center for Excellence in Particle Physics (CCEPP); Joint Large-Scale Scientific Facility Funds of the NSFC and CAS [U1832207]; CAS Key Research Program of Frontier Sciences [QYZDJ-SSW-SLH003, QYZDJ-SSWSLH040]; 100 Talents Program of CAS; Institute of Nuclear and Particle Physics (INPAC); Shanghai Key Laboratory for Particle Physics and Cosmology; European Union [894790]; German Research Foundation DFG [455635585]; Collaborative Research Center [CRC 1044, FOR5327, GRK 2149]; Istituto Nazionale di Fisica Nucleare, Italy; Ministry of Development of Turkey [DPT2006K-120470]; National Research Foundation of Korea [NRF-2022R1A2C1092335]; National Science and Technology fund of Mongolia; National Science Research and Innovation Fund (NSRF) via the Program Management Unit for Human Resources & Institutional Development, Research and Innovation of Thailand [B16F640076]; Polish National Science Centre [2019/35/O/ST2/02907]; Swedish Research Council; U.S. Department of Energy [DE-FG02-05ER41374]

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摘要：

Using e (+) e (-) collision data collected with the BESIII detector operating at the BEPCII collider, the Born cross sections of e (+) e (-)->Lambda(+)(c) Lambda(-)(c) (2595) (-) + c.c. and e (+) e (-)->Lambda(+)(c) Lambda(-)(c) (2625)(-) + c.c. are measured for the first time at center-of-mass energies of root s = 4918.0 and 4950.9 MeV. Nonzero cross sections are observed very close to the production threshold. The measured Born cross sections of e (+) e (-)->Lambda(+)(c) Lambda(-)(c) (2625)(-) + c.c are about 2-3 times greater than those of e (+) e (-)->Lambda(+)(c) Lambda(-)(c) (2595) (-) +...

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Measurements of Born cross sections for e⁺ e^- → Λ_c⁺ (Λ)over-bar_c (2595)^- + c.c. and e⁺ e^- → Λ_c⁺ (Λ)over-bar_c (2625)^- + c.c. at √s=4918.0 and 4950.9 MeV

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