An improved limit for ee of X ( 3872 ) and ee measurement of ψ ( 3686 )
نویسندگان
چکیده
M. Ablikim a, M.N. Achasov i,1, X.C. Ai a, O. Albayrak e, M. Albrecht d, D.J. Ambrose av, A. Amoroso az,bb, F.F. An a, Q. An aw, J.Z. Bai a, R. Baldini Ferroli t, Y. Ban ag, D.W. Bennett s, J.V. Bennett e, M. Bertani t, D. Bettoni v, J.M. Bian au, F. Bianchi az,bb, E. Boger y,8, O. Bondarenko aa, I. Boyko y, R.A. Briere e, H. Cai bd, X. Cai a, O. Cakir ap,2, A. Calcaterra t, G.F. Cao a, S.A. Cetin aq, J.F. Chang a, G. Chelkov y,3, G. Chen a, H.S. Chen a, H.Y. Chen b, J.C. Chen a, M.L. Chen a, S.J. Chen ae, X. Chen a, X.R. Chen ab, Y.B. Chen a, H.P. Cheng q, X.K. Chu ag, G. Cibinetto v, D. Cronin-Hennessy au, H.L. Dai a, J.P. Dai aj, A. Dbeyssi n, D. Dedovich y, Z.Y. Deng a, A. Denig x, I. Denysenko y, M. Destefanis az,bb, F. De Mori az,bb, Y. Ding ac, C. Dong af, J. Dong a, L.Y. Dong a, M.Y. Dong a, S.X. Du bf, P.F. Duan a, J.Z. Fan ao, J. Fang a, S.S. Fang a, X. Fang aw, Y. Fang a, L. Fava ba,bb, F. Feldbauer x, G. Felici t, C.Q. Feng aw, E. Fioravanti v, M. Fritsch n,x, C.D. Fu a, Q. Gao a, X.Y. Gao b, Y. Gao ao, Z. Gao aw, I. Garzia v, C. Geng aw, K. Goetzen j, W.X. Gong a, W. Gradl x, M. Greco az,bb, M.H. Gu a, Y.T. Gu l, Y.H. Guan a, A.Q. Guo a, L.B. Guo ad, Y. Guo a, Y.P. Guo x, Z. Haddadi aa, A. Hafner x, S. Han bd, Y.L. Han a, X.Q. Hao o, F.A. Harris at, K.L. He a, Z.Y. He af, T. Held d, Y.K. Heng a, Z.L. Hou a, C. Hu ad, H.M. Hu a, J.F. Hu az,bb, T. Hu a, Y. Hu a, G.M. Huang f, G.S. Huang aw, H.P. Huang bd, J.S. Huang o, X.T. Huang ai, Y. Huang ae, T. Hussain ay, Q. Ji a, Q.P. Ji af, X.B. Ji a, X.L. Ji a, L.L. Jiang a, L.W. Jiang bd, X.S. Jiang a, J.B. Jiao ai, Z. Jiao q, D.P. Jin a, S. Jin a, T. Johansson bc, A. Julin au, N. Kalantar-Nayestanaki aa, X.L. Kang a, X.S. Kang af, M. Kavatsyuk aa, B.C. Ke e, R. Kliemt n, B. Kloss x, O.B. Kolcu aq,4, B. Kopf d, M. Kornicer at, W. Kühn z, A. Kupsc bc, W. Lai a, J.S. Lange z, M. Lara s, P. Larin n, C. Leng bb, C.H. Li a, Cheng Li aw, D.M. Li bf, F. Li a, G. Li a, H.B. Li a, J.C. Li a, Jin Li ah, K. Li m, K. Li ai, Lei Li c, P.R. Li as, T. Li ai, W.D. Li a, W.G. Li a, X.L. Li ai, X.M. Li l, X.N. Li a, X.Q. Li af, Z.B. Li an, H. Liang aw, Y.F. Liang al, Y.T. Liang z, G.R. Liao k, D.X. Lin n, B.J. Liu a, C.X. Liu a, F.H. Liu ak, Fang Liu a, Feng Liu f, H.B. Liu l, H.H. Liu a, H.H. Liu p, H.M. Liu a, J. Liu a, J.P. Liu bd, J.Y. Liu a, K. Liu ao, K.Y. Liu ac, L.D. Liu ag, P.L. Liu a, Q. Liu as, S.B. Liu aw, X. Liu ab, X.X. Liu as, Y.B. Liu af, Z.A. Liu a, Zhiqiang Liu a, Zhiqing Liu x, H. Loehner aa, X.C. Lou a,5, H.J. Lu q, J.G. Lu a, R.Q. Lu r, Y. Lu a, Y.P. Lu a, C.L. Luo ad, M.X. Luo be, T. Luo at, X.L. Luo a, M. Lv a, X.R. Lyu as, F.C. Ma ac, H.L. Ma a, L.L. Ma ai, Q.M. Ma a, S. Ma a, T. Ma a, X.N. Ma af, X.Y. Ma a, F.E. Maas n, M. Maggiora az,bb, Q.A. Malik ay, Y.J. Mao ag, Z.P. Mao a, S. Marcello az,bb, J.G. Messchendorp aa, J. Min a, T.J. Min a, R.E. Mitchell s, X.H. Mo a, Y.J. Mo f, C. Morales Morales n, K. Moriya s, N.Yu. Muchnoi i,1, H. Muramatsu au, Y. Nefedov y, F. Nerling n, I.B. Nikolaev i,1, Z. Ning a, S. Nisar h, S.L. Niu a, X.Y. Niu a, S.L. Olsen ah, Q. Ouyang a, S. Pacetti u, P. Patteri t, M. Pelizaeus d, H.P. Peng aw, K. Peters j, J. Pettersson bc, J.L. Ping ad, R.G. Ping a, R. Poling au, Y.N. Pu r, M. Qi ae, S. Qian a, C.F. Qiao as, L.Q. Qin ai, N. Qin bd, X.S. Qin a, Y. Qin ag, Z.H. Qin a, J.F. Qiu a, K.H. Rashid ay, C.F. Redmer x, H.L. Ren r, M. Ripka x,∗, G. Rong a, X.D. Ruan l, V. Santoro v, A. Sarantsev y,6, M. Savriéw, K. Schoenning bc, S. Schumann x, W. Shan ag,
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