Determination of the number of J/ψ events with inclusive J/ψ decays  

作　　者：麦迪娜 M.N.Achasov 艾小聪 O.Albayrak M.Albrecht D.J.Ambrose A.Amoroso 安芬芬 安琪 白景芝 R.Baldini Ferroli 班勇 D.W.Bennett J.V.Bennett M.Bertani D.Bettoni 边渐鸣 F.Bianchi E.Boger I.Boyko R.A.Briere 蔡浩 蔡啸 O.Cakir A.Calcaterra 曹国富 S.A.Cetin 常劲帆 G.Chelkov 陈刚 陈和生 陈海云 陈江川 陈玛丽 陈申见 谌炫 陈旭荣 陈元柏 程和平 褚新坤 G.Cibinetto 代洪亮 代建平 A.Dbeyssi D.Dedovich 邓子艳 A.Denig I.Denysenko M.Destefanis F.De Mori 丁勇 董超 董静 董燎原 董明义 豆正磊 杜书先 段鹏飞 范荆州 方建 房双世 方馨 方易 R.Farinelli L.Fava O.Fedorov F.Feldbauer G.Felici 封常青 E.Fioravanti M.Fritsch 傅成栋 高清 高鑫磊 高旭阳 高原宁 高榛 I.Garzia K.Goetzen 龚丽 龚文煊 W.Gradl M.Greco 顾旻皓 顾运厅 管颖慧 郭爱强 郭立波 郭玥 郭玉萍 Z.Haddadi A.Hafner 韩爽 郝喜庆 F.A.Harris 何康林 T.Held 衡月昆 侯治龙 胡琛 胡海明 胡继峰 胡涛 胡誉 黄光顺 黄金书 黄性涛 黄勇 T.Hussain 纪全 姬清平 季晓斌 季筱璐 姜鲁文 江晓山 蒋兴雨 焦健斌 焦铮 金大鹏 金山 T.Johansson A.Julin N.Kalantar-Nayestanaki 康晓琳 康晓珅 M.Kavatsyuk 柯百谦 P.Kiese R.Kliemt B.Kloss 0.B.Kolcu B.Kopf M.Kornicer A.Kupsc W.Kuhn J.S.Lange M.Lara P.Larin C.Leng 李翠 李澄 李德民 李飞 李峰云 李刚 李海波 李家才 李瑾 李科 李 

机构地区：[1]Institute of High Energy Physics [2]G.I. Budker Institute of Nuclear Physics SB RAS (BINP) [3]the Novosibirsk State University [4]Carnegie Mellon University [5]Bochum Ruhr-University [6]University of Rochester [7]University of Turin [8]INFN [9]University of Science and Technology of China [10]State Key Laboratory of Particle Detection and Electronics [11]INFN Laboratori Nazionali di Frascati [12]Peking University [13]Indiana University [14]INFN Sezione di Ferrara [15]University of Minnesota [16]Joint Institute for Nuclear Research [17]the Moscow Institute of Physics and Technology [18]Wuhan University [19]Ankara University [20]Istanbul Bilgi University [21]the Functional Electronics Laboratory, Tomsk State University [22]Beihang University [23]Nanjing University [24]Lanzhou University [25]Huangshan College [26]Shanghai Jiao Tong University [27]Helmholtz Institute Mainz [28]Johannes Gutenberg University of Mainz [29]Liaoning University [30]Nankai University [31]Zhengzhou University [32]Tsinghua University [33]University of Ferrara [34]University of Eastern Piedmont [35]GSI Helmholtzcentre for Heavy Ion Research GmbH [36]Guangxi University [37]Nanjing Normal University [38]KVI-CART, University of Groningen [39]Henan Normal University [40]University of Hawaii [41]Shandong University [42]University of the Punjab [43]Uppsala University [44]Istanbul Arel University [45]Justus-Liebig-Universitaet Giessen, Ⅱ. Physikalisches Institut [46]Seoul National University [47]Hangzhou Normal University [48]Beijing Institute of Petrochemical Technology [49]University of Chinese Academy of Sciences [50]Sun Yat-Sen University [51]Sichuan University [52]Guangxi Normal University [53]Shanxi University [54]Central China Normal University [55]Henan University of Science and Technology [56]University of Texas at Dallas [57]Zhejiang University [58]COMSATS Institute of Information Technology [59]INFN and University of Perugia [60]Goethe University Frankfurt [61]the NRC "Kurchatov Institute,PNPI [62]Uludag University [63]Near East Unive

出　　处：《Chinese Physics C》2017年第1期1-10,共10页中国物理C（英文版）

基　　金：Supported by National Key Basic Research Program of China(2015CB856700);National Natural Science Foundation of China(NSFC)(10805053,11125525,11175188,11235011,11322544,11335008,11425524);Chinese Academy of Sciences(CAS)Large-Scale Scientific Facility Program;the CAS Center for Excellence in Particle Physics(CCEPP);Collaborative Innovation Center for Particles and Interactions(CICPI);Joint Large-Scale Scientific Facility Funds of NSFC and CAS(11179007,U1232201,U1232107,U1332201);CAS(KJCX2-YW-N29,KJCX2-YW-N45);100 Talents Program of CAS,INPAC;Shanghai Key Laboratory for Particle Physics and Cosmology;German Research Foundation DFG(Collaborative Research Center CRC-1044);Istituto Nazionale di Fisica Nucleare,Italy;Ministry of Development of Turkey(DPT2006K-120470);Russian Foundation for Basic Research(14-07-91152);U.S.Department of Energy(DE-FG02-04ER41291,DE-FG02-05ER41374,DE-FG02-94ER40823,DESC0010118);U.S.National Science Foundation;University of Groningen(RuG);the Helmholtzzentrum fuer Schwerionenforschung GmbH(GSI),Darmstadt;WCU Program of National Research Foundation of Korea(R32-2008-000-10155-0)

摘　　要：A measurement of the number of J/ψ events collected with the BESⅢ detector in 2009 and 2012 is performed using inclusive decays of the J/ψ. The number of J/ψ events taken in 2009 is recalculated to be（223.7±1.4）×10^6, which is in good agreement with the previous measurement, but with significantly improved precision due to improvements in the BESⅢ software. The number of J/ψ events taken in 2012 is determined to be（1086.9±6.0）×10^6. In total, the number of J/ψ events collected with the BESⅢ detector is measured to be（1310.6±7.0）×10^6, where the uncertainty is dominated by systematic effects and the statistical uncertainty is negligible.A measurement of the number of J/ψ events collected with the BESⅢ detector in 2009 and 2012 is performed using inclusive decays of the J/ψ. The number of J/ψ events taken in 2009 is recalculated to be（223.7±1.4）×10^6, which is in good agreement with the previous measurement, but with significantly improved precision due to improvements in the BESⅢ software. The number of J/ψ events taken in 2012 is determined to be（1086.9±6.0）×10^6. In total, the number of J/ψ events collected with the BESⅢ detector is measured to be（1310.6±7.0）×10^6, where the uncertainty is dominated by systematic effects and the statistical uncertainty is negligible.

关 键 词：number of J/ψ events BESⅢ detector inclusive J/ψ events 

分 类 号：O571.3[理学—粒子物理与原子核物理]