학술논문
Measurements of Σ+ and Σ− time-like electromagnetic form factors for center-of-mass energies from 2.3864 to 3.0200 GeV
Document Type
article
Author
M. Ablikim; M.N. Achasov; P. Adlarson; S. Ahmed; M. Albrecht; A. Amoroso; Q. An; Anita; Y. Bai; O. Bakina; R. Baldini Ferroli; I. Balossino; Y. Ban; K. Begzsuren; J.V. Bennett; N. Berger; M. Bertani; D. Bettoni; F. Bianchi; J. Biernat; J. Bloms; A. Bortone; I. Boyko; R.A. Briere; H. Cai; X. Cai; A. Calcaterra; G.F. Cao; N. Cao; S.A. Cetin; J.F. Chang; W.L. Chang; G. Chelkov; D.Y. Chen; G. Chen; H.S. Chen; M.L. Chen; S.J. Chen; X.R. Chen; Y.B. Chen; W. Cheng; G. Cibinetto; F. Cossio; X.F. Cui; H.L. Dai; J.P. Dai; X.C. Dai; A. Dbeyssi; R.B. de Boer; D. Dedovich; Z.Y. Deng; A. Denig; I. Denysenko; M. Destefanis; F. De Mori; Y. Ding; C. Dong; J. Dong; L.Y. Dong; M.Y. Dong; S.X. Du; J. Fang; S.S. Fang; Y. Fang; R. Farinelli; L. Fava; F. Feldbauer; G. Felici; C.Q. Feng; M. Fritsch; C.D. Fu; Y. Fu; X.L. Gao; Y. Gao; Y.G. Gao; I. Garzia; E.M. Gersabeck; A. Gilman; K. Goetzen; L. Gong; W.X. Gong; W. Gradl; M. Greco; L.M. Gu; M.H. Gu; S. Gu; Y.T. Gu; C.Y. Guan; A.Q. Guo; L.B. Guo; R.P. Guo; Y.P. Guo; A. Guskov; S. Han; T.T. Han; T.Z. Han; X.Q. Hao; F.A. Harris; K.L. He; F.H. Heinsius; T. Held; Y.K. Heng; M. Himmelreich; T. Holtmann; Y.R. Hou; Z.L. Hou; H.M. Hu; J.F. Hu; T. Hu; Y. Hu; G.S. Huang; L.Q. Huang; X.T. Huang; Z. Huang; N. Huesken; T. Hussain; W. Ikegami Andersson; W. Imoehl; M. Irshad; S. Jaeger; S. Janchiv; Q. Ji; Q.P. Ji; X.B. Ji; X.L. Ji; H.B. Jiang; X.S. Jiang; X.Y. Jiang; J.B. Jiao; Z. Jiao; S. Jin; Y. Jin; T. Johansson; N. Kalantar-Nayestanaki; X.S. Kang; R. Kappert; M. Kavatsyuk; B.C. Ke; I.K. Keshk; A. Khoukaz; P. Kiese; R. Kiuchi; R. Kliemt; L. Koch; O.B. Kolcu; B. Kopf; M. Kuemmel; M. Kuessner; A. Kupsc; M.G. Kurth; W. Kühn; J.J. Lane; J.S. Lange; P. Larin; L. Lavezzi; H. Leithoff; M. Lellmann; T. Lenz; C. Li; C.H. Li; Cheng Li; D.M. Li; F. Li; G. Li; H.B. Li; H.J. Li; J.L. Li; J.Q. Li; Ke Li; L.K. Li; Lei Li; P.L. Li; P.R. Li; S.Y. Li; W.D. Li; W.G. Li; X.H. Li; X.L. Li; Z.B. Li; Z.Y. Li; H. Liang; Y.F. Liang; Y.T. Liang; L.Z. Liao; J. Libby; C.X. Lin; B. Liu; B.J. Liu; C.X. Liu; D. Liu; D.Y. Liu; F.H. Liu; Fang Liu; Feng Liu; H.B. Liu; H.M. Liu; Huanhuan Liu; Huihui Liu; J.B. Liu; J.Y. Liu; K. Liu; K.Y. Liu; Ke Liu; L. Liu; Q. Liu; S.B. Liu; Shuai Liu; T. Liu; X. Liu; Y.B. Liu; Z.A. Liu; Z.Q. Liu; Y.F. Long; X.C. Lou; F.X. Lu; H.J. Lu; J.D. Lu; J.G. Lu; X.L. Lu; Y. Lu; Y.P. Lu; C.L. Luo; M.X. Luo; P.W. Luo; T. Luo; X.L. Luo; S. Lusso; X.R. Lyu; F.C. Ma; H.L. Ma; L.L. Ma; M.M. Ma; Q.M. Ma; R.Q. Ma; R.T. Ma; X.N. Ma; X.X. Ma; X.Y. Ma; Y.M. Ma; F.E. Maas; M. Maggiora; S. Maldaner; S. Malde; Q.A. Malik; A. Mangoni; Y.J. Mao; Z.P. Mao; S. Marcello; Z.X. Meng; J.G. Messchendorp; G. Mezzadri; T.J. Min; R.E. Mitchell; X.H. Mo; Y.J. Mo; N.Yu. Muchnoi; H. Muramatsu; S. Nakhoul; Y. Nefedov; F. Nerling; I.B. Nikolaev; Z. Ning; S. Nisar; S.L. Olsen; Q. Ouyang; S. Pacetti; X. Pan; Y. Pan; A. Pathak; P. Patteri; M. Pelizaeus; H.P. Peng; K. Peters; J. Pettersson; J.L. Ping; R.G. Ping; A. Pitka; R. Poling; V. Prasad; H. Qi; H.R. Qi; M. Qi; T.Y. Qi; S. Qian; W.-B. Qian; Z. Qian; C.F. Qiao; L.Q. Qin; X.P. Qin; X.S. Qin; Z.H. Qin; J.F. Qiu; S.Q. Qu; K.H. Rashid; K. Ravindran; C.F. Redmer; A. Rivetti; V. Rodin; M. Rolo; G. Rong; Ch. Rosner; M. Rump; A. Sarantsev; M. Savrié; Y. Schelhaas; C. Schnier; K. Schoenning; D.C. Shan; W. Shan; X.Y. Shan; M. Shao; C.P. Shen; P.X. Shen; X.Y. Shen; H.C. Shi; R.S. Shi; X. Shi; X.D. Shi; J.J. Song; Q.Q. Song; W.M. Song; Y.X. Song; S. Sosio; S. Spataro; F.F. Sui; G.X. Sun; J.F. Sun; L. Sun; S.S. Sun; T. Sun; W.Y. Sun; Y.J. Sun; Y.K. Sun; Y.Z. Sun; Z.T. Sun; Y.H. Tan; Y.X. Tan; C.J. Tang; G.Y. Tang; J. Tang; V. Thoren; B. Tsednee; I. Uman; B. Wang; B.L. Wang; C.W. Wang; D.Y. Wang; H.P. Wang; K. Wang; L.L. Wang; M. Wang; M.Z. Wang; Meng Wang; W.H. Wang; W.P. Wang; X. Wang; X.F. Wang; X.L. Wang; Y. Wang; Y.D. Wang; Y.F. Wang; Y.Q. Wang; Z. Wang; Z.Y. Wang; Ziyi Wang; Zongyuan Wang; T. Weber; D.H. Wei; P. Weidenkaff; F. Weidner; S.P. Wen; D.J. White; U. Wiedner; G. Wilkinson; M. Wolke; L. Wollenberg; J.F. Wu; L.H. Wu; L.J. Wu; X. Wu; Z. Wu; L. Xia; H. Xiao; S.Y. Xiao; Y.J. Xiao; Z.J. Xiao; X.H. Xie; Y.G. Xie; Y.H. Xie; T.Y. Xing; X.A. Xiong; G.F. Xu; J.J. Xu; Q.J. Xu; W. Xu; X.P. Xu; L. Yan; W.B. Yan; W.C. Yan; Xu Yan; H.J. Yang; H.X. Yang; L. Yang; R.X. Yang; S.L. Yang; Y.H. Yang; Y.X. Yang; Yifan Yang; Zhi Yang; M. Ye; M.H. Ye; J.H. Yin; Z.Y. You; B.X. Yu; C.X. Yu; G. Yu; J.S. Yu; T. Yu; C.Z. Yuan; W. Yuan; X.Q. Yuan; Y. Yuan; Z.Y. Yuan; C.X. Yue; A. Yuncu; A.A. Zafar; Y. Zeng; B.X. Zhang; Guangyi Zhang; H.H. Zhang; H.Y. Zhang; J.L. Zhang; J.Q. Zhang; J.W. Zhang; J.Y. Zhang; J.Z. Zhang; Jianyu Zhang; Jiawei Zhang; L. Zhang; Lei Zhang; S. Zhang; S.F. Zhang; T.J. Zhang; X.Y. Zhang; Y. Zhang; Y.H. Zhang; Y.T. Zhang; Yan Zhang; Yao Zhang; Yi Zhang; Z.H. Zhang; Z.Y. Zhang; G. Zhao; J. Zhao; J.Y. Zhao; J.Z. Zhao; Lei Zhao; Ling Zhao; M.G. Zhao; Q. Zhao; S.J. Zhao; Y.B. Zhao; Y.X. Zhao Zhao; Z.G. Zhao; A. Zhemchugov; B. Zheng; J.P. Zheng; Y. Zheng; Y.H. Zheng; B. Zhong; C. Zhong; L.P. Zhou; Q. Zhou; X. Zhou; X.K. Zhou; X.R. Zhou; A.N. Zhu; J. Zhu; K. Zhu; K.J. Zhu; S.H. Zhu; W.J. Zhu; X.L. Zhu; Y.C. Zhu; Z.A. Zhu; B.S. Zou; J.H. Zou
Source
Physics Letters B, Vol 814, Iss , Pp 136110- (2021)
Subject
Language
English
ISSN
0370-2693
79425410
79425410
Abstract
The Born cross sections of the e+e−→Σ+Σ¯− and e+e−→Σ−Σ¯+ processes are determined for center-of-mass energy from 2.3864 to 3.0200 GeV with the BESIII detector. The cross section lineshapes can be described properly by a pQCD function and the resulting ratio of effective form factors for the Σ+ and Σ− is consistent with 3. In addition, ratios of the Σ+ electric and magnetic form factors, |GE/GM|, are obtained at three center-of-mass energies through an analysis of the angular distributions. These measurements, which are studied for the first time in the off-resonance region, provide precision experimental input for understanding baryonic structure. The observed new features of the Σ± form factors require more theoretical discussions for the hyperons.