Details

Autor(en) / Beteiligte

• Anita
• Bloms, J.
• Cetin, S.A.
• Chen, M.L.
• Chen, S.J.
• Dai, H.L.
• Dai, J.P.
• Dedovich, D.
• Deng, Z.Y.
• Fang, S.S.
• Fu, C.D.
• Fu, Y.
• Goetzen, K.
• Gradl, W.
• Greco, M.
• Gu, L.M.
• Guo, Y.P.
• Han, T.T.
• Harris, F.A.
• Heinsius, F.H.
• Himmelreich, M.
• Holtmann, T.
• Hu, T.
• Huang, Z.
• Hussain, T.
• Ji, X.B.
• Jiang, X.Y.
• Jiao, Z.
• Kappert, R.
• Kuemmel, M.
• Kühn, W.
• Lane, J.J.
• Larin, P.
• Li, C.H.
• Li, Cheng
• Li, D.M.
• Li, J.Q.
• Li, Ke
• Li, S.Y.
• Liang, Y.T.
• Lin, C.X.
• Liu, D.
• Liu, F.H.
• Liu, Fang
• Liu, Feng
• Liu, Huanhuan
• Liu, K.Y.
• Liu, Ke
• Lou, X.C.
• Lu, F.X.
• Lu, X.L.
• Luo, P.W.
• Ma, Y.M.
• Mao, Z.P.
• Marcello, S.
• Muramatsu, H.
• Pathak, A.
• Ping, R.G.
• Qin, X.P.
• Qin, Z.H.
• Ravindran, K.
• Rong, G.
• Rosner, Ch
• Shan, X.Y.
• Shen, P.X.
• Song, J.J.
• Song, W.M.
• Song, Y.X.
• Sui, F.F.
• Sun, J.F.
• Sun, L.
• Sun, S.S.
• Sun, Z.T.
• Uman, I.
• Wang, K.
• Weidenkaff, P.
• Weidner, F.
• Wilkinson, G.
• Wu, L.H.
• Wu, Z.
• Xia, L.
• Xie, X.H.
• Xu, J.J.
• Yang, H.X.
• Yang, Y.X.
• Yu, B.X.
• Yuan, Z.Y.
• Yue, C.X.
• Zhang, Guangyi
• Zhang, Jianyu
• Zhang, Lei
• Zhang, T.J.
• Zhao, Lei
• Zhao, Q.
• Zhao Zhao, Y.X.
• Zhemchugov, A.
• Zhou, Q.
• Zhu, S.H.
• Zhu, W.J.
• Zhu, X.L.

Titel

Measurements of Σ+ and Σ− time-like electromagnetic form factors for center-of-mass energies from 2.3864 to 3.0200 GeV

Ist Teil von

• Physics letters. B, 2021-03, Vol.814, p.136110, Article 136110

Ort / Verlag

Elsevier B.V

Erscheinungsjahr

2021

Quelle

Access via ScienceDirect (Elsevier)

Beschreibungen/Notizen

• 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.