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Observation of a p mass threshold enhancement in ψ′→π+π-J/ψ(J/ψ→γp) decay

Chinese Physics C 2010年第4期34卷 421-426页

作者：麦迪娜 M. N. Achasov 安磊安琪安正华白景芝班勇 N. Berger 边渐鸣 I. Boyko R. A. Briere V. Bytev 蔡啸曹国富曹学香常劲帆 G. Chelkov 陈刚陈和生陈江川陈丽平陈玛丽陈鹏陈申见陈元柏初元萍 D. Cronin-Hennessy 代洪亮代建平 D. Dedovich 邓子艳 I. Denysenko M. Destefanis 丁勇董燎原董明义杜书先段麦英方建封常青傅成栋傅金林高原宁耿聪 K. Goetzen 龚文煊 M. Greco S. Grishin 顾运厅郭爱强郭立波郭玉萍韩少卿 F. A. harris 何康林何苗何振亚衡月昆侯治龙胡海明胡继峰胡涛胡小为黄彬黄光明黄金书黄性涛黄燕萍姬长胜纪全季晓斌季筱璐贾卢魁姜丽丽江晓山焦健斌金大鹏金山 S. Komamiya W. Kuehn S. lange 梁干庄李澄李翠李德民李飞李刚李海波李捷李家才李蕾李陆李秋菊李卫东李卫国李晓玲李小男李学潜李秀荣李玉晓李志兵梁昊梁泰然 Y.T. liang 梁勇飞廖广睿廖小涛刘北江刘春秀刘春燕刘福虎刘芳刘峰刘冠川刘虎刘宏邦刘怀民刘红薇刘健刘觉平刘坤刘魁勇刘树彬刘晓海刘玉斌刘艳芳刘衍文刘勇刘振安鲁公儒吕军光吕绮雯吕晓睿卢云鹏罗成林罗民兴Zhejiang University 罗涛罗小兰马长利马凤才马海龙马秋梅马想马骁妍 M. Maggiora 冒亚军毛泽普闵建莫晓虎 N. Yu. Muchnoi Y. Nefedov 宁飞鹏 S. l. Olsen 欧阳群 M. Pelizaeus K. Peters 平加伦平荣刚 R. Poling 潘振声祁鸣钱森乔从丰邱进发荣刚阮向东 Sarantsev 邵明沈肖雁盛华义 S. Sonoda S. Spataro B. Spruck 孙德辉孙功星孙俊峰孙胜森孙晓东孙勇杰孙永昭孙志嘉孙振田唐昌建唐晓唐秀福田浩来 D. Toth G. S. Varner 万霞王博群王纪科王科王亮亮王灵淑王平王佩良王强王思广王晓东汪晓莲王雅迪王贻芳王亚乾王铮王志刚王至勇魏代会文硕频 U. Wiedner 伍灵慧吴宁吴元明吴智肖振军谢宇广许国发徐光明徐昊徐敏徐明徐新平徐晔许咨宗薛镇严亮鄢文标颜永红杨洪勋杨明杨璞杨世明杨永栩叶梅叶铭汉俞伯祥喻纯旭俞玲苑长征袁野曾云张丙新张炳云张长春张达华张宏浩章红宇张家文张建勇张景芝张雷张书华张学尧张瑶张银鸿张子平赵川赵海升赵家伟赵京伟赵雷赵玲赵明刚赵强赵书俊赵祥虎赵豫斌赵政国 A. Zhemchugov 郑波郑建平郑阳恒郑志鹏钟彬周莉周中良朱程朱凯朱科军朱启明朱兴旺朱永生朱自安庄建邹冰松邹佳恒左嘉旭 P. Zweber Institute of High Energy Physics CAS G.I. Budker Institute of Nuclear Physics SB RAS (BINP) Guangxi University University of Science and Technology of China Peking University Joint Institute for Nuclear Research Carnegie Mellon University the Moscow Institute of Physics and Technology Nanjing University University of Minnesota the Bogolyubov Institute for Theoretical Physics University of Turin and INFN liaoning University Zhengzhou University Shanxi University Tsinghua University GSI Helmholtzcentre for Heavy Ion Research GmbH D-64291 DarmstadtGermany Nankai University Nanjing Normal University University of Hawaii Graduate University of Chinese Academy of Sciences Huazhong Normal University Henan Normal University Shandong University The University of Tokyo Universitaet Giessen The University of Hong Kong Sun Yat-Sen University Sichuan University Guangxi Normal University The Chinese University of Hong Kong Wuhan University Seoul National University Bochum Ruhr-University China Center of Advanced Science and Technology currently at Suzhou University Hunan University

The decay channel ψ′→ π 〉＋π^-J/ψ（J/ψ 〉 γp^-p） is studied using a sample of 1.06 × 10^8 ψ′ events collected by the BESIII experiment at BEPCII. A strong enhancement at threshold is observed in the p^-p invariant mass spectrum. The enhancement can be fitted with an S-wave Breit-Wigner resonance function with a resulting peak mass of M = 1861-13^＋6 （stat）-26^＋7 （syst） MeV/c^2 and a narrow width that is Г 〈 38 MeV/c^2 at the 90% confidence level. These results are consistent with published BESII results. These mass and width values do not match with well established mesons.

关键词： p^-p threshold enhancement

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Measurements of the center-of-mass energies at BESⅢ via the di-muon process

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Chinese Physics C 2016年第6期40卷 1-8页

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杜书先段鹏飞范荆州方建房双世方馨方易 l.Fava 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明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 B.C.Ke P.Kiese R.Kliemt B.Kloss O.B.Kolcu B.Kopf M.Kornicer W.Kühn A.Kupsc 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康李科李蕾李培荣李腾李卫东李卫国李晓玲李小梅李小男李学潜李志兵梁昊梁勇飞梁羽铁廖广睿 D.X.lin(lin) 刘北江刘春秀刘栋刘福虎刘芳刘峰刘宏邦刘欢欢刘汇慧刘怀民刘杰刘建北刘觉平刘晶译刘凯刘魁勇刘兰雕刘佩莲刘倩刘树彬刘翔刘玉斌刘振安刘智清 H.loehner 娄辛丑吕海江吕军光卢宇卢云鹏罗成林罗民兴 T.luo 罗小兰吕晓睿马凤才马海龙马连良马秋梅马天马旭宁马骁妍 F.E.Maas M.Maggiora 冒亚军毛泽普 S.Marcello J.G.Messchendorp 闵建 R.E.Mitchell 莫晓虎莫玉俊 C.Morales Morales K.Moriya N.Yu.Muchnoi H.Muramatsu Y.Nefedov F.Nerling I.B.Nikolaev 宁哲 S.Nisar 牛顺利牛讯伊馬鵬欧阳群 S.Pacetti 潘越 P.Patteri M.Pelizaeus 彭海平 K.Peters J.Pettersson 平加伦平荣刚 R.Poling V.Prasad 祁鸣钱森乔从丰秦丽清覃拈秦小帅秦中华邱进发 K.H.Rashid C.F.Redmer M.Ripka 荣刚 Ch.Rosner 阮向东 V.Santoro A.Sarantsev M.Savrie K.Schoenning S.Schumann 单葳邵明沈成平沈培迅沈肖雁盛华义宋维民宋欣颖 S.Sosio S.Spataro 孙功星孙俊峰孙胜森孙勇杰孙永昭孙志嘉孙振田唐昌建唐晓 I.Tapan E.H.Thorndike M.Tiemens M.Ullrich I.Uman G.S.Varner 王斌王东王大勇王科王亮亮王灵淑王萌王平王佩良王思广王炜王维平王雄飞王雅迪王贻芳王亚乾王铮王志刚王志宏王至勇 T.Weber 魏代会韦江波 P.Weidenkaff 文硕频 U.Wiedner M.Wolke 伍灵慧吴智夏磊夏力钢夏宇肖栋肖浩肖振军谢宇广修青磊许国发徐雷徐庆君徐新平严亮鄢文标闫文成颜永红杨海军杨洪勋杨柳杨迎杨永栩叶梅叶铭汉殷俊昊俞伯祥喻纯旭俞洁晟苑长征袁文龙袁野 A.Yuncu A.A.Zafar A.Zallo 曾云曾哲张丙新张炳云张弛张长春张达华张宏浩章红宇张佳佳张杰磊张敬庆张家文张建勇张景芝张坤张磊张学尧张瑶张宇宁张银鸿张亚腾张宇张正好张子平张振 Institute of High Energy Physics G.I.Budker Institute of Nuclear Physics SB RAS(BINP) the Novosibirsk State University Carnegie Mellon University Bochum Ruhr-University University of Rochester University of Turin INFN University of Science and Technology of China State Key laboratory of Particle Detection and Electronics INFN laboratori Nazionali di Frascati Peking University Indiana University INFN Sezione di Ferrara University of Minnesota Joint Institute for Nuclear Research the Moscow Institute of Physics and Technology Wuhan University Istanbul Aydin University Ankara University University of Eastern Piedmont the Functional Electronics laboratory Tomsk State University Beihang University Nanjing University lanzhou University Huangshan College Shanghai Jiao Tong University Helmholtz Institute Mainz Johannes Gutenberg University of Mainz liaoning University Nankai University Zhengzhou University Tsinghua University GSI Helmholtzcentre for Heavy Ion Research GmbH GuangXi University Nanjing Normal University KVI-CART University of Groningen Henan Normal University University of Hawaii Central China Normal University Shandong University University of the Punjab Uppsala University Dogus University Istanbul Arel University Justus liebig University Giessen Ⅱ.Physikalisches Institut Seoul National University Hangzhou Normal University Beijing Institute of Petrochemical Technology University of Chinese Academy of Sciences Sun Yat-Sen University Sichuan University Guangxi Normal University Shanxi University Henan University of Science and Technology University of Texas at Dallas Zhejiang University COMSATS Institute of Information Technology INFN and University of Perugia the NRC "Kurchatov Institute" PNPI University of Ferrara Uludag University Hunan University University of South China Soochow University China Center of Advanced Science and Technology Turkey Bogazici University University of Science and Technology liaoning

From 2011 to 2014, the BESIII experiment collected about 5 fb^-1 data at center-of-mass energies around 4 GeV for the studies of the charmonium-like and higher excited charmonium states. By analyzing the di-muon process e＋e- →yma/Fsμ^＋μ^-, the center-of-mass energies of the data samples are measured with a precision of 0.8 MeV. The center-of-mass energy is found to be stable for most of the time during data taking.

关键词： center-of-mass energy di-muon process charmoniumlike states

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Measurement of the absolute branching fraction of D^+→K^0e^+v_e via K^0→π~0π~0

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Chinese Physics C 2016年第11期40卷 5-13页

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实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.Dedovieh 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如盼郭玥郭玉萍 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晓忠黄勇黄智玲 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 O.B.Kolcu B.Kopf M.Kornicer A.Kupsc W.Kühn 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惠静李家才李瑾李康李科李蕾李培荣李启云李腾李卫东李卫国李晓玲李小男李学潜李郁博李志兵梁昊梁勇飞梁羽铁廖广睿林德旭刘冰刘北江刘春秀刘栋刘福虎刘芳刘峰刘宏邦刘汇慧刘欢欢刘怀民刘杰刘建北刘觉平刘晶译刘凯刘魁勇刘兰雕刘佩莲刘倩刘树彬刘翔刘玉斌刘振安刘智青 H.loehner 娄辛丑吕海江吕军光卢宇卢云鹏罗成林罗民兴 T.luo 罗小兰吕晓睿马凤才马海龙马连良马明明马秋梅马天马旭宁马骁妍马玉明 F.E.Maas M.Maggiora 冒亚军毛泽普 S.Marcello J.G.Messchendorp 闵建闵天觉 R.E.Mitchell 莫晓虎莫玉俊 C.Morales Morales N.Yu.Muchnoi H.Muramatsu Y.Nefedov F.Nerling I.B.Nikolaev 宁哲 S.Nisar 牛顺利牛讯伊馬鵬欧阳群 S.Pacetti 潘越 P.Patteri M.Pelizaeus 彭海平 K.Peters J.Pettersson 平加伦平荣刚 R.Poling V.Prasad 漆红荣祁鸣钱森乔从丰秦丽清覃拈秦小帅秦中华邱进发 K.H.Rashid C.F.Redmer M.Ripka 荣刚 Ch.Rosner 阮向东 A.Sarantsev M.Savrie K.Schoenning S.Schumann 单葳邵明沈成平沈培迅沈肖雁盛华义施萌宋维民宋欣颖 S.Sosio S.Spataro 孙功星孙俊峰孙胜森孙新华孙勇杰孙永昭孙志嘉孙振田唐昌建唐晓 I.Tapan E.H.Thorndike M.Tiemens M.Ullrich I.Uman G.S.Yarner 王斌王滨龙王东王大勇王科王亮亮王灵淑王萌王平王佩良王炜王维平王雄飞王越王雅迪王贻芳王亚乾王铮王志刚王志宏王至勇王宗源 T.Weber 魏代会 P.Weidenkaff 文硕频 U.Wiedner M.Wolke 伍灵慧吴连近吴智夏磊夏力钢夏宇肖栋肖浩肖振军谢宇广修青磊许国发徐静静徐雷徐庆君徐庆年徐新平严亮鄢文标闫文成颜永红杨海军杨洪勋杨柳杨永栩叶梅叶铭汉殷俊昊俞伯祥喻纯旭俞洁晟苑长征袁文龙袁野 A.Yuncu A.A.Zafar A.Zallo 曾云曾哲张丙新张炳云张驰张长春张达华张宏浩章红宇张晋张佳佳 Institute of High Energy Physics G.I.Budker Institute of Nuclear Physics SB RAS BINP the Novosibirsk State University Carnegie Mellon University Bochum Ruhr-University University of Rochester University of Turin INFN University of Science and Technology of China State Key laboratory of Particle Detection and Electronics INFN laboratori Nazionali di Frascati Peking University Indiana University INFN Sezione di Ferrara University of Minnesota Joint Institute for Nuclear Research the Moscow Institute of Physics and Technology Carnegie Mellon University PittsburghPennsylvania 15213USA Central China Normal University Wuhan University Ankara University Istanbul Bilgi University the Functional Electronics laboratory Tomsk State University Beihang University University of Chinese Academy of Sciences Nanjing University lanzhou University Huangshan College Shanghai Jiao Tong University Helmholtz Institute Mainz Johannes Gutenberg University of Mainz liaoning University Nankai University Zhengzhou University Tsinghua University University of Ferrara University of Eastern Piedmont GSI Helmholtzcentre for Heavy Ion Research GmbH Guangxi University Nanjing Normal University KVI-CART University of Groningen Henan Normal University University of Hawaii Uludag University Shandong University University of the Punjab Uppsala University Istanbul Axel University Justus-liebig-Universitaet Giessen Ⅱ.Physikalisches Institut Seoul National University Hangzhou Normal University Beijing Institute of Petrochemical Technology Sun Yat-Sen University Sichuan University Guangxi Normal University Shanxi University Henan University of Science and Technology University of Texas at Dallas Zhejiang University G.I.Budker Institute of Nuclear Physics SB RAS(BINP) COMSATS Institute of Information Technology INFN and University of Perugia Goethe University Frankfurt the NRC "Kurchatov Institute PNPI Near East University NicosiaNorth Cyprus Soochow University Hunan University University of South China China Center of Advanced Science and Technology B

By analyzing 2.93 fb-1 data collected at the center-of-mass energy v/S = 3.773 GeV with the BESIII detector, we measure the absolute branching fraction of the semileptonic decay D＋- k0e＋ ve via k0-π0π0 - （8.59 ± 0.14 ± 0.21）% using k0- k0-π0π0, where the first uncertainty is statistical and the second systematic. Our result is consistent with previous measurements within uncertainties..

关键词： charmed mesons semileptonic decays absolute branching fraction BESIII/BEPCII

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Determination of the number of ψ(3686)events at BESⅢ

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Chinese Physics C 2018年第2期42卷 1-11页

作者：麦迪娜 M.N.Achasov 艾小聪 D.J.Ambrose A.Amoroso 安芬芬安琪白景芝 R.Baldini Ferroli 班勇 J.V.Bennett M.Bertani 边渐鸣 E.Boger O.Bonda renko I.Boyko R.A.Briere 蔡浩蔡啸 O.Cakir A.Calcaterra 曹国富 S.A.Cetin 常劲帆 G.Chelkov 陈刚陈和生陈江川陈玛丽陈申见谌炫陈旭荣陈元柏褚新坤初元萍 D.Cronin-Hennessy 代洪亮代建平 D.Dedovich 邓子艳 A.Denig I.Denysenko M.Destefanis 丁勇董超董静董燎原董明义杜书先范荆州方建房双世方易 l.Fava F.Feldbauer 封常青傅成栋高清高原宁 K.Goetzen 龚文煊 W.Gradl M.Greco 顾旻皓顾运厅管颖慧郭爱强郭玉萍韩艳良 F.A.harris 何康林何苗 T.Held 衡月昆侯治龙胡海明胡涛黄光顺黄金书黄亮黄性涛 T.Hussain 纪全姬清平季晓斌季筱璐姜丽丽江晓山焦健斌焦铮金大鹏金山 T.Johansson N.Kalantar-Nayestanaki 康晓琳康晓坤 M.Kavatsyuk B.Kloss B.Kopf M.Kornicer A.Kupsc W.Kuhn 赖蔚 J.S.lange M.lara P.larin 李春花李澄李德民李飞李刚李海波李家才李康李科李蕾李培荣李秋菊李卫东李卫国李晓玲李小男李学潜李秀荣李志兵梁昊梁勇飞梁羽铁廖广睿林德旭刘北江刘春秀刘福虎刘芳刘峰刘宏邦刘怀民刘汇慧刘杰刘觉平刘凯刘魁勇刘倩刘树彬刘翔刘玉斌刘振安刘志强刘智青 H.loehner 娄辛丑吕海江卢怀乐吕军光卢宇卢云鹏罗成林罗民兴 T.luo 罗小兰吕蒙吕晓睿马凤才马海龙马秋梅马斯马天马骁妍 F.E.Maas M.Maggiora 冒亚军毛泽普 J.G.Messchendorp 闵建闵天觉 R.E.Mitchell 莫晓虎莫玉俊 C.Morales Morales K.Moriya N.Yu.Muchnoi H.Muramatsu Y.Nefedov I.B.Nikolaev 宁哲 S.Nisar 牛顺利牛讯伊马鹏欧阳群 S.Pacetti M.Pelizaeus 彭海平 K.Peters 平加伦平荣刚 R.Poling 祁鸣钱森乔从丰秦小帅秦中华邱进发 K.H.Rashid C.F.Redmer M.Ripka 荣刚 A.Sarantsev K.Schoenning 单葳邵明沈成平沈肖雁盛华义 M.R.Shepherd 宋维民宋欣颖 S.Sosio S.Spataro 孙功星孙俊峰孙胜森孙勇杰孙永昭孙志嘉唐昌建唐晓 I.Tapan E.H.Thorndike D.Toth I.Uman G.S.Varner 王斌王东王大勇王科王亮亮王灵淑王萌王平王佩良王庆娟王炜王雄飞 Y.D.Wang(Yadi) 王贻芳王亚乾王铮王志刚王至勇魏代会 P.Weidenkaff 文硕频 U.Wiedner M.Wolke 伍灵慧吴智夏力钢夏宇肖栋肖振军谢宇广修青磊许国发徐雷徐庆君徐庆年徐新平鄢文标颜永红杨洪勋杨迎杨永栩叶桦叶梅叶铭汉俞伯祥喻纯旭俞洁晟苑长征袁野 A.A.Zafar 曾云张丙新张炳云张长春张达华张宏浩章红宇张佳佳张敬庆张家文张建勇张景芝张磊张瑞张书华张晓杰张学尧张银鸿张瑶张正好张子平张振宇赵光赵京伟赵京周赵雷赵玲赵明刚赵强赵庆旺赵书俊赵天池赵豫斌赵政国 A.Zhemchugov 郑波郑建平郑阳恒钟彬周莉周详周晓康周小蓉周兴玉朱凯朱科军朱相雷朱莹春朱永生朱自安庄建邹冰松邹佳恒无 Institute of High Energy Physics Beijing 100049China Beihang University Beijing 100191China Beijing Institute of Petrochemical Technology Beijing 102617China Bochum Ruhr-University D-44780 BochumGermany Carnegie Mellon University PittsburghPennsylvania 15213USA Central China Normal University Wuhan 430079China China Center of Advanced Science and Technology Beijing 100192China COMSATS Institute of Information Technology LahoreDefence RoadOff Raiwind Road54000 LahorePakistan G.I.Budker Institute of Nuclear Physics SB RAS(BINP) Novosibirsk 630090Russia GSI Helmholtzcentre for Heavy Ion Research GmbH D-64291 DarmstadtGermany Guangxi Normal University Guilin 541004China Guangxi University Nanning 530004China Hangzhou Normal University Hangzhou 310036China Helmholtz Institute Mainz Johann-Joachim-Becher-Weg 45D-55099 MainzGermany Henan Normal University Xinxiang 453007China Henan University of Science and Technology Luoyang 471003China Huangshan College Huangshan 245000China Hunan University Changsha 410082China Indiana University BloomingtonIndiana 47405USA INFN laboratori Nazionali di Frascati 1-00044FrascatiItaly INFN and University of Perugia 1-06100PerugiaItaly INFN Sezione di Ferrara 1-44122FerraraItaly University of Ferrara 1-44122FerraraItaly Johannes Gutenberg University of Mainz Johann-Joachim-Becher-Weg 45D-55099 MainzGermany Joint Institute for Nuclear Research 141980 DubnaMoscow regionRussia Justus-liebig-Universitaet Giessen II.Physikalisches InstitutHeinrich-Buff-Ring 16D-35392 GiessenGermany KVI-CART University of GroningenNL-9747 AA GroningenThe Netherlands lanzhou University Lanzhou 730000China liaoning University Shenyang 110036China Nanjing Normal University Nanjing 210023China Nanjing University Nanjing 210093China Nankai University Tianjin 300071China Peking University Beijing 100871China Seoul National University Seoul151-747 Korea Shandong University Jinan 250100China Shanghai Jiao Tong University Shanghai 200240China Shanxi University Taiyuan

The numbers of ψ（3686） events accumulated by the BESⅢ detector for the data taken during 2009 and 2012 are determined to be（107.0±0.8）×10^6 and（341.1±2.1）×10^6, respectively, by counting inclusive hadronic events,where the uncertainties are systematic and the statistical uncertainties are negligible. The number of events for the sample taken in 2009 is consistent with that of the previous measurement. The total number of ψ（3686） events for the two data taking periods is（448.1±2.9）×10^6.

关键词： ψ(3686) inclusive process hadronic events Bhabha process

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