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arxiv: 1410.8426 · v3 · submitted 2014-10-30 · ✦ hep-ex

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Search for the weak decays J/psi to D^{(*)}_{s}eν_{e}

BESIII Collaboration: M. Ablikim , M.N. Achasov , X.C.Ai , O.Albayrak , M.Albrecht , D.J.Ambrose , A.Amoroso , F.F.An
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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 O. Bondarenko 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 Y.P. Chu G. Cibinetto D. Cronin-Hennessy H.L. Dai J.P. Dai 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 J.Z. Fan J. Fang S.S. Fang X. Fang Y. Fang L. Fava F. Feldbauer G. Felici C.Q. Feng E. Fioravanti C.D. Fu Q. Gao Y. Gao I. Garzia K. Goetzen W.X. Gong W. Gradl M. Greco M.H. Gu Y.T.Gu Y.H. Guan A.Q. Guo L.B. Guo T. Guo Y. Guo Y.P. Guo Z. Haddadi A. Hafner S. Han Y.L. Han 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 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 R. Kliemt B. Kloss O.B. Kolcu B. Kopf M. Kornicer W. Kuehn A. Kupsc W. Lai J.S. Lange M. Lara P. Larin C.H. Li Cheng Li D.M. Li F.Li G. Li H.B. Li J.C.LI Jin Li K. 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.L. Liu C.X. Liu F.H. Liu Fang Liu Feng Liu H.B. Liu H.H. Liu H.M. Liu J. Liu J.P. Liu J.Y. Liu K. Liu K.Y. Liu L.D. 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 S. Ma T. Ma X.N. Ma X.Y. Ma F.E. Maas M. Maggiora Q.A. Malik 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 H. Moeini 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.L. Ping R.G. Ping R. Poling 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 X.D. Ruan V. Santoro A. Sarantsev M. Savri\'e K. Schoenning S. Schumann W. Shan M. Shao C.P. Shen P.X. Shen X.Y. Shen H.Y. Sheng M.R. Shepherd W.M. Song X.Y. Song S. Sosio S. Spataro B. Spruck 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 D. Toth 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 Q.J. 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 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 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.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.J. Zhang X.Y. Zhang Y. Zhang Y.H. 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 B.S. Zou J.H. Zou
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classification ✦ hep-ex
keywords searchmathcaltimes10weakabovebackgroundbepciibesiii
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Using a sample of $2.25\times 10^8$ $J/\psi$ events collected with the BESIII detector at the BEPCII collider, we search for the $J/\psi$ semi-leptonic weak decay $J/\psi \to D^{-}_{s} e^{+}\nu_{e}+c.c.$ with a much higher sensitivity than previous searches. We also perform the first search for $J/\psi \to D^{*-}_{s} e^{+}\nu_{e}+c.c.$ No significant excess of a signal above background is observed in either channel. At the $90\%$ confidence level, the upper limits are determined to be $\mathcal{B}(J/\psi \to D^{-}_{s}e^{+}\nu_{e}+c.c.)<1.3\times10^{-6}$ and $\mathcal{B}(J/\psi \to {D^{*}_{s}}^{-}e^{+}\nu_{e}+c.c.)<1.8\times10^{-6}$, respectively. Both are consistent with Standard Model predictions.

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