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Measurement of e plus e-& RARR;AA & eta;from 3.5106 to 4.6988 GeV and study of AA mass threshold enhancement

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成果类型:
期刊论文
作者:
Xu, Wei;Ablikim, M.;Achasov, M. N.;Adlarson, P.;Albrecht, M.;...
通讯作者:
Xu, W
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.; Liu, Z. A.; Wu, J. F.; Wang, Yaqian; Sun, S. S.; Xu, Wei; Fu, C. D.; Lou, X. C.; Zhang, B. X.; Xing, T. Y.; Cao, G. F.; Wu, L. H.; Zhao, Y. B.; Zheng, J. P.; Liu, C.; 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.; Liang, Y. F.; Ji, X. L.; Zhang, X. M.; Li, L. K.; Li, H. B.; 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.; Dong, X.; 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.; Liu, Fang; Zhao, J. Y.; 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.; 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.; 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.; 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.] 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.; Keshk, I. K.; Wollenberg, L.; Albrecht, M.; Schnier, C.; de Boer, R. E.; Feldbauer, F.; Wiedner, U.; Kuemmel, M.; Li, J. Q.; Maldaner, S.] Bochum Ruhr Univ, D-44780 Bochum, Germany.
[Briere, R. A.] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA.
通讯机构:
[Xu, W ] I
Inst High Energy Phys, Beijing 100049, Peoples R China.
Univ Chinese Acad Sci, Beijing 100049, Peoples R China.
语种:
英文
期刊:
PHYSICAL REVIEW D
ISSN:
2470-0010
年:
2023
卷:
107
期:
11
基金类别:
National Key Ramp;D Program of China [2020YFA0406300, 2020YFA0406400]; National Natural Science Foundation of China (NSFC) [11635010, 1173 5014, 11835012, 11935015, 11935016, 11935018, 11961141012, 12022510, 1202 5502, 12035009, 12035013, 12192260, 12192261, 12192262, 12192263, 12192264, 12192265]; 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; CAS [U1832207]; CAS Key Research Program of Frontier Sciences [QYZDJ-SSW-SLH003, QYZDJ-SSW-SLH040]; 100 Talents Program of CAS; Institute of Nuclear and Particle Physics (INPAC); Shanghai Key Laboratory for Particle Physics and Cosmology; ERC [758462]; European Union [894790]; German Research FoundationDFG [443159800, 455635585, CRC 1044, FOR5327, GRK 2149]; Istituto Nazionale di Fisica Nucleare, Italy; Ministry of Development of Turkey [DPT2006K-120470]; National Science and Techno-logy fund; National Science Research and Innovation Fund (NSRF) via the Program Management Unit for Human Resources amp; Institutional Development, Research and Innovation [B16F640076]; OlleEngkvist Foundation [200-0605]; Suranaree University of Technology (SUT) , Thailand Science Research and Innovation (TSRI); National Science Research and Innovation Fund (NSRF) [160355]; Royal Society, United Kingdom [DH140054, DH160214]; Swedish Research Council; U.S. Department of Energy [DE-FG02-05ER41374]
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摘要:
Using data samples with a total integrated luminosity of approximately 18 fb-1 collected by the BESIII detector operating at the Beijing Electron-Positron Collider II, the process e+e- & RARR; A over bar A & eta; is studied at center-of-mass energies between 3.5106 and 4.6988 GeV. The Born cross section for the process e+e-& RARR; A over bar A & eta; is measured. No significant structure is observed in the Born cross section line shape. An enhancement near the AA over bar mass threshold is observed for the first time in the process. The structure can be described by an S-wave Breit-Wigner func...

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