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Determination of the Σ plus Timelike Electromagnetic Form Factors

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成果类型:
期刊论文
作者:
Ablikim, M.;Achasov, M. N.;Adlarson, P.;Ai, X. C.;Aliberti, R.;...
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.; 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.
语种:
英文
期刊:
PHYSICAL REVIEW LETTERS
ISSN:
0031-9007
年:
2024
卷:
132
期:
8
页码:
081904
基金类别:
National Key Research and Development Program of China#&#&#2020YFA0406400#&#&#2020YFA0406300#&#&#2023YFA1609400 National Natural Science Foundation of China#&#&#11905092#&#&#12105132#&#&#11705078#&#&#11625523#&#&#12105276#&#&#12122509#&#&#11635010#&#&#11735014#&#&#11835012#&#&#11935015#&#&#11935016#&#&#11935018#&#&#11961141012#&#&#12022510#&#&#12025502#&#&#12035009#&#&#12035013#&#&#12061131003#&#&#12192260#&#&#12192261#&#&#12192262#&#&#12192263#&#&#12192264#&#&#12192265#&#&#12221005#&#&#12225509#&#&#12235017 Chinese Academy of Sciences#&#&#U1832207#&#&#U1732263#&#&#U1832103#&#&#U2032111 Key Research Program of Frontier Science, Chinese Academy of Sciences#&#&#QYZDJ-SSW-SLH003#&#&#QYZDJ-SSW-SLH040 Shanghai Key Laboratory for Particle Physics and Cosmology Double First Class University Plan University of Science and Technology of China European Research Council#&#&#758462 HORIZON EUROPE Marie Sklodowska-Curie Actions#&#&#894790 Deutsche Forschungsgemeinschaft#&#&#455635585 Dementia Collaborative Research Centres, Australia#&#&#CRC 1044#&#&#FOR5327#&#&#GRK 214 Instituto Nazionale di Fisica Nucleare Kalkinma Bakanliği#&#&#DPT2006K-120470 National Research Foundation of Korea#&#&#NRF-2022R1A2C1092335 National Science and Technology Development Agency Narodowe Centrum Nauki#&#&#2019/35/O/ST2/02907 Vetenskapsrådet#&#&#2019.04594 U.S. Department of Energy#&#&#DE-FG02-05ER41374 Natural Science Foundation of Liaoning Province#&#&#2019-BS-113 Department of Education of Liaoning Province#&#&#LQN201902 Knut och Alice Wallenbergs Stiftelse#&#&#2021.0174#&#&#2021.0299 Swedish Foundation for International Cooperation in Research and Higher Education#&#&#CH2018-7756 Institute of Nuclear and Particle Physics 100 Talents Program of CAS INPAC National Science Research and Innovation Fund#&#&#160355 Human Resources & Institutional Development, Research and Innovation#&#&#B16F640076 Scientific research Foundation of Liaoning Foundation of Innovation team 2020, Liaoning Province Opening Foundation of Songshan Lake Materials Laboratory#&#&#2021SLABFK04 CAS Youth Team Program#&#&#YSBR-101
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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...

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