1. Measurement of the leptonic decay width of J/ψ using initial state radiation
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M. Ablikim, M.N. Achasov, X.C. Ai, O. Albayrak, M. Albrecht, D.J. Ambrose, A. Amoroso, F.F. An, Q. An, J.Z. Bai, R. Baldini Ferroli, Y. Ban, D.W. Bennett, J.V. Bennett, M. Bertani, D. Bettoni, J.M. Bian, F. Bianchi, E. Boger, I. Boyko, R.A. Briere, H. Cai, X. Cai, O. Cakir, A. Calcaterra, G.F. Cao, S.A. Cetin, J.F. Chang, G. Chelkov, G. Chen, H.S. Chen, H.Y. Chen, J.C. Chen, M.L. Chen, S.J. Chen, X. Chen, X.R. Chen, Y.B. Chen, H.P. Cheng, X.K. Chu, G. Cibinetto, H.L. Dai, J.P. Dai, A. Dbeyssi, 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, P.F. Duan, E.E. Eren, J.Z. Fan, J. Fang, S.S. Fang, X. Fang, Y. Fang, L. Fava, F. Feldbauer, G. Felici, C.Q. Feng, E. Fioravanti, M. Fritsch, C.D. Fu, Q. Gao, X.Y. Gao, Y. Gao, Z. Gao, I. Garzia, C. Geng, K. Goetzen, W.X. Gong, W. Gradl, M. Greco, M.H. Gu, Y.T. Gu, Y.H. Guan, A.Q. Guo, L.B. Guo, Y. Guo, Y.P. Guo, Z. Haddadi, A. Hafner, S. Han, Y.L. Han, X.Q. Hao, F.A. Harris, K.L. He, Z.Y. He, T. Held, Y.K. Heng, Z.L. Hou, C. Hu, H.M. Hu, J.F. Hu, T. Hu, Y. Hu, G.M. Huang, G.S. Huang, H.P. Huang, J.S. Huang, X.T. Huang, Y. Huang, T. Hussain, Q. Ji, Q.P. Ji, X.B. Ji, X.L. Ji, L.L. Jiang, L.W. Jiang, X.S. Jiang, X.Y. Jiang, J.B. Jiao, Z. Jiao, D.P. Jin, S. Jin, T. Johansson, A. Julin, N. Kalantar-Nayestanaki, X.L. Kang, X.S. Kang, M. Kavatsyuk, B.C. Ke, P. Kiese, R. Kliemt, B. Kloss, O.B. Kolcu, B. Kopf, M. Kornicer, W. Kuehn, A. Kupsc, J.S. Lange, M. Lara, P. Larin, C. Leng, C. Li, C.H. Li, Cheng Li, D.M. Li, F. Li, G. Li, H.B. Li, J.C. Li, Jin Li, K. Li, Lei Li, P.R. Li, T. Li, W.D. Li, W.G. Li, X.L. Li, X.M. Li, X.N. Li, X.Q. Li, Z.B. Li, H. Liang, Y.F. Liang, Y.T. Liang, G.R. Liao, D.X. Lin, B.J. Liu, C.X. Liu, F.H. Liu, Fang Liu, Feng Liu, H.B. Liu, H.H. Liu, H.M. Liu, J. Liu, J.B. Liu, J.P. Liu, J.Y. Liu, K. Liu, K.Y. Liu, L.D. Liu, P.L. Liu, Q. Liu, S.B. Liu, X. Liu, X.X. Liu, Y.B. Liu, Z.A. Liu, Zhiqiang Liu, Zhiqing Liu, H. Loehner, X.C. Lou, H.J. Lu, J.G. Lu, R.Q. Lu, Y. Lu, Y.P. Lu, C.L. Luo, M.X. Luo, T. Luo, X.L. Luo, M. Lv, X.R. Lyu, F.C. Ma, H.L. Ma, L.L. Ma, Q.M. Ma, T. Ma, X.N. Ma, X.Y. Ma, F.E. Maas, M. Maggiora, Y.J. Mao, Z.P. Mao, S. Marcello, J.G. Messchendorp, J. Min, T.J. Min, R.E. Mitchell, X.H. Mo, Y.J. Mo, C. Morales Morales, K. Moriya, N.Yu. Muchnoi, H. Muramatsu, Y. Nefedov, F. Nerling, I.B. Nikolaev, Z. Ning, S. Nisar, S.L. Niu, X.Y. Niu, S.L. Olsen, Q. Ouyang, S. Pacetti, P. Patteri, M. Pelizaeus, H.P. Peng, K. Peters, J. Pettersson, J.L. Ping, R.G. Ping, R. Poling, V. Prasad, Y.N. Pu, M. Qi, S. Qian, C.F. Qiao, L.Q. Qin, N. Qin, X.S. Qin, Y. Qin, Z.H. Qin, J.F. Qiu, K.H. Rashid, C.F. Redmer, H.L. Ren, M. Ripka, G. Rong, Ch. Rosner, X.D. Ruan, V. Santoro, A. Sarantsev, M. Savrié, K. Schoenning, S. Schumann, W. Shan, M. Shao, C.P. Shen, P.X. Shen, X.Y. Shen, H.Y. Sheng, W.M. Song, X.Y. Song, S. Sosio, S. Spataro, G.X. Sun, J.F. Sun, S.S. Sun, Y.J. Sun, Y.Z. Sun, Z.J. Sun, Z.T. Sun, C.J. Tang, X. Tang, I. Tapan, E.H. Thorndike, M. Tiemens, M. Ullrich, I. Uman, G.S. Varner, B. Wang, B.L. Wang, D. Wang, D.Y. Wang, K. Wang, L.L. Wang, L.S. Wang, M. Wang, P. Wang, P.L. Wang, S.G. Wang, W. Wang, X.F. Wang, Y.D. Wang, Y.F. Wang, Y.Q. Wang, Z. Wang, Z.G. Wang, Z.H. Wang, Z.Y. Wang, T. Weber, D.H. Wei, J.B. Wei, P. Weidenkaff, S.P. Wen, U. Wiedner, M. Wolke, L.H. Wu, Z. Wu, L.G. Xia, Y. Xia, D. Xiao, H. Xiao, Z.J. Xiao, Y.G. Xie, Q.L. Xiu, G.F. Xu, L. Xu, Q.J. Xu, Q.N. Xu, X.P. Xu, L. Yan, W.B. Yan, W.C. Yan, Y.H. Yan, H.J. Yang, H.X. Yang, L. Yang, Y. Yang, Y.X. Yang, H. Ye, M. Ye, M.H. Ye, J.H. Yin, B.X. Yu, C.X. Yu, H.W. Yu, J.S. Yu, C.Z. Yuan, W.L. Yuan, Y. Yuan, A. Yuncu, A.A. Zafar, A. Zallo, Y. Zeng, B.X. Zhang, B.Y. Zhang, C. Zhang, C.C. Zhang, D.H. Zhang, H.H. Zhang, H.Y. Zhang, J.J. Zhang, J.L. Zhang, J.Q. Zhang, J.W. Zhang, J.Y. Zhang, J.Z. Zhang, K. Zhang, L. Zhang, S.H. Zhang, X.Y. Zhang, Y. Zhang, Y.N. Zhang, Y.H. Zhang, Y.T. Zhang, Yu Zhang, Z.H. Zhang, Z.P. Zhang, Z.Y. Zhang, G. Zhao, J.W. Zhao, J.Y. Zhao, J.Z. Zhao, Lei Zhao, Ling Zhao, M.G. Zhao, Q. Zhao, Q.W. Zhao, S.J. Zhao, T.C. Zhao, Y.B. Zhao, Z.G. Zhao, A. Zhemchugov, B. Zheng, J.P. Zheng, W.J. Zheng, Y.H. Zheng, B. Zhong, L. Zhou, Li Zhou, X. Zhou, X.K. Zhou, X.R. Zhou, X.Y. Zhou, K. Zhu, K.J. Zhu, S. Zhu, X.L. Zhu, Y.C. Zhu, Y.S. Zhu, Z.A. Zhu, J. Zhuang, L. Zotti, B.S. Zou, J.H. Zou, Research unit Nuclear & Hadron Physics, Uludağ Üniversitesi/Fen-Edebiyat Fakültesi/Fizik Bölümü., Tapan, İlhan, Doğuş Üniversitesi, Fen Edebiyat Fakültesi, Fizik Bölümü, TR3959, Çetin, Serkant Ali, BESIII Collaboration, and İstanbul Arel Üniversitesi
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Particle physics ,Nuclear and High Energy Physics ,Electron–positron annihilation ,BESIII ,Electronic width ,Initial state radiation ,J/ψ resonance ,Radiation ,01 natural sciences ,law.invention ,High Energy Physics - Experiment ,NO ,Nuclear physics ,E(+)E(-) COLLISIONS ,Charmonium ,Drift Chambers ,Branching ,law ,J/psi resonance ,0103 physical sciences ,Fysik ,ddc:530 ,Physics, nuclear ,010306 general physics ,Collider ,Nuclear Experiment ,Physics ,010308 nuclear & particles physics ,Branching fraction ,State (functional analysis) ,J/? resonance ,FINAL-STATES ,lcsh:QC1-999 ,Physical Sciences ,Astronomy & astrophysics ,Physics, particles & fields ,High Energy Physics::Experiment ,CROSS-SECTION ,lcsh:Physics - Abstract
Physics letters / B 761, 98 - 103(2016). doi:10.1016/j.physletb.2016.08.011, Using a data set of 2.93 fb$^{-1}$ taken at a center-of-mass energy of $\sqrt{s}$ = 3.773 GeV with the BESIII detector at the BEPCII collider, we measure the process $e^+e^-\rightarrow J/\psi\gamma\rightarrow \mu^+\mu^-\gamma$ and determine the product of the branching fraction and the electronic width $\mathcal B_{\mu\mu}\cdot \Gamma_{ee} = (333.4 \pm 2.5_{\rm stat} \pm 4.4_{\rm sys})$~eV. Using the earlier-published BESIII result for $\mathcal B_{\mu\mu}$ = (5.973 $\pm$ 0.007$_{\rm stat}$ $\pm$ 0.037$_{\rm sys}$)\%, we derive the $J/\psi$ electronic width $\Gamma_{ee}$~= (5.58 $\pm$ 0.05$_{\rm stat}$ $\pm$ 0.08$_{\rm sys}$) keV., Published by North-Holland Publ., Amsterdam
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- 2016
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