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NUMERIcAL sIMULATION Of ATOMIZATION GAs fIELDs IN VARIOUs ATOMIZING PROc.s.Es

Acta Metallurgica sinica(English Letters) 2002年第3期15卷 279-284页

作者： f.y. cao, j.f. sun, c.s. cui, j. shen and q.c. linational key laboratory of precision hot processing of metals, harbin institute of technology, harbin 150001,chinamanuscript received 10 december 2001 in revised form 31 j.nuary 2002 harbin Inst. of Technol. Harbin 150001 China

A computational fluid Dynamics software was used to calculate the atomizing gas fields generated by a self-designed atomizer and to analyze the effec.s.of key atomizing variables such as gas pressure and protrusion length of delivery tube on the gas flow state at the tip of or inside the delivery tube. Increasing the length of delivery tube to a certain extent, the eddy flow region with positive pressure moves away from the tip of delivery tube, which is favorable to achieve the effective atomization of the melt.

关键词： atomization computational fluid dynamics numerical simulation powder metallurgy

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Luminosities and energies of e^(+)e^(−) collision data taken between √s=4.61 GeV and 4.95 GeV at BEsⅢ

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chinese Physics c 2022年第11期46卷 64-75页

作者：麦迪娜 M.N.Achasov P.Adlarson M.Albrecht R.Aliberti A.Amoroso 安美儒安琪白旭红白羽 O.Bakina R.Baldini ferroli I.Balossino 班勇 V.Batozskaya D.Becker K.Begzsuren N.Berger M.Bertani D.Bettoni f.Bianchi j.Bloms A.Bortone I.Boyko R.A.Briere A.Brueggemann 蔡浩蔡啸 A.calcaterra 曹国富曹宁 s.A.cetin 常劲帆常万玲 G.chelkov 陈琛陈刚陈和生陈玛丽陈申见 T.chen 陈旭荣 X.T.chen 陈元柏陈卓俊成伟帅初晓 G.cibinetto f.c.s.io 崔佳佳代洪亮代建平 A.Dbeyssi R.Ede Boer D.Dedovich 邓子艳 A.Denig I.Denysenko M.Destefanis f.De Mori 丁勇董静董燎原董明义董翔杜书先 P.Egorov 范玉兰方建房双世方文兴方易 R.farinelli L.fava f.feldbauer G.felici 封常青冯俊华 K.fischer M.fritsch c.fritzsch 傅成栋高涵高原宁高扬 s.Garbolino I.Garzia 葛潘婷耿聪 E.M.Gersabeck A Gilman K.Goetzen 龚丽龚文煊 W.Gradl M.Greco 顾旻皓关春懿郭爱强郭立波郭如盼郭玉萍 A.Guskov 韩婷婷韩文颖郝喜庆 f.A.Harris 何凯凯何康林 f.H.Heinsius c.H.Heinz 衡月昆 c.Herold M.Himmelreich T.Holtmann 侯国一侯颖锐侯治龙胡海明 j.f.Hu 胡涛胡誉黄光顺黄凯旋黄麟钦黄麟钦黄性涛黄燕萍 Z.Huang T.Hussain N Hüsken W.Imoehl M.Irshad j.j.c.s.n s.j.eger s.j.nchiv q.j. 姬清平季晓斌季筱璐吉钰瑶贾泽坤姜侯兵姜赛赛江晓山 y.j.ang 焦健斌焦铮金山金毅荆茂强 T.j.hansson N.Kalantar-Nayestanaki 康晓珅 R.Kappert M.Kavatsyuk 柯百谦 I.K.Keshk A.Khoukaz P.Kiese R.Kiuchi R.Kliemt L.Koch O.B.Kolcu B.Kopf M.Kuemmel M.Kuessner A.Kupsc W.Kühn j.j.Lane j.s.Lange P.Larin A.Lavania L.Lavezzi 雷祚弘 H.Leithoff M.Lellmann T.Lenz 李聪李翠李春花李澄李德民李飞李刚李贺 H.Li 李海波李惠静 H.N.Li j.q.Li 李静舒李井文李科 L.j.Li 李龙科李蕾李明浩李培荣李素娴栗帅迎李腾李卫东李卫国李旭红李晓玲李晓宇李紫源梁浩梁昊梁浩梁勇飞梁羽铁廖广睿廖龙洲 j.Libby A.Limphirat c.X.Lin 林德旭 T.Lin 刘北江刘春秀 D.Liu 刘福虎刘芳刘峰 G.M.Liu H.Liu 刘怀民刘欢欢刘汇慧刘建北刘佳俊刘晶译刘凯刘魁勇刘珂刘亮刘美宏刘佩莲刘倩刘树彬刘桐刘维克刘卫民刘翔刘英刘玉斌刘振安刘智青娄辛丑卢飞翔吕海江吕军光陆小玲卢宇卢云鹏卢泽辉罗成林罗民兴罗涛罗小兰吕晓睿吕翌丰马凤才马海龙马连良马明明马秋梅马润秋马瑞廷马骁妍马尧 fEMaas M.Maggiora s.Maldaner s.Malde q.A.Malik A.Mangoni 冒亚军毛泽普 s.Marcello 孟召霞 j.G.Messchendorp G.Mezzadri H.Miao 闵天觉 R.E.Mitchell 莫晓虎 N.yu.Muchnoi H.Muramatsu y.Nefedov f.Nerling I.B.Nikolaev 宁哲 s.Nisar 牛艳 s.L.Olsen 欧阳群 s.Pacetti 潘祥 y.Pan A.Pathak A.Pathak M.Pelizaeus 彭海平 K.Peters j.Pettersson 平加伦平荣刚 s.Plura s.Pogodin R.Poling V.Prasad 齐法制齐航漆红荣祈鸣齐天钰钱森钱文斌钱圳乔从丰秦佳佳秦丽清覃潇平秦小帅秦中华邱进发屈三强 s.q.qu institute of High Energy Physics Beijing 100049China Beihang University Beijing 100191China Beij.ng 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 100190China cOMsATs University Islamabad Lahore CampusDefence RoadOff Raiwind Road54000 LahorePakistan fudan University Shanghai 200433China 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 Hangzhou Normal University Hangzhou 310036China Helmholtz institute Mainz Staudinger Weg 18D-55099 MainzGermany Henan Normal University Xinxiang 453007China Henan University of science and technology Luoyang 471003China Henan University of technology Zhengzhou 450001China Huangshan college Huangshan 245000China Hunan Normal University Changsha 410081China Hunan University Changsha 410082China Indian institute of technology Madras Chennai 600036India Indiana University BloomingtonIndiana 47405USA INfN Laboratori Nazionali di frascati INFN Laboratori Nazionali di FrascatiI-00044FrascatiItaly INfN Laboratori Nazionali di frascati INFN Sezione di PerugiaI-06100PerugiaItaly INfN Laboratori Nazionali di frascati University of PerugiaI-06100PerugiaItaly INfN sezione di ferrara INFN Sezione di FerraraI-44122FerraraItaly INfN sezione di ferrara University of FerraraI-44122FerraraItaly institute of Modern Physics Lanzhou 730000China institute of Physics and technology Peace Ave.54BUlaanbaatar 13330Mongolia j.lin University Changchun 130012China j.hannes Gutenberg University of Mainz Johann-Joachim-Becher-Weg 45D-55099 MainzGermany j.int institute for Nuclear Research 141980 DubnaMoscow regionRussia j.stus-Liebig-Universitaet Giessen II.Physikalisches InstitutHeinrich-Buff-Ring 16

from december 2019 to j.ne 2021,the BEsⅢ experiment collected approximately 5.85 fb^(−1) of data at center-of-mass energies between 4.61 and 4.95 *** is the highest collision energy BEPcⅡ has reached to *** accumulated e^(+)e^(−) annihilation data samples are useful for studying charmonium(-like)states and charmed-hadron *** adopting a novel method of analyzing the production of A_(c)^(+)A_(c)^(-) pairs in e^(+)e^(−) annihilation,the center-of-mass energies are measured with a precision of 0.6 *** luminosities are measured with a precision of better than 1% by analyzing the events of large-angle Bhabha *** measurements provide important inputs to analyses based on these data samples.

关键词： luminosity center-of-mass energy BEsⅢdetector

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Measurement of integrated luminosities at BEsⅢ for data samples at center-of-mass energies between 4.0 and 4.6 GeV

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chinese Physics c 2022年第11期46卷 53-63页

作者：麦迪娜 M.N.Achasov P.Adlarson s.Ahmed M.Albrecht R.Aliberti A.Amoroso 安美儒安琪白旭红白羽 O.Bakina R.Baldini ferroli I.Balossino 班勇 V.Batozskaya D.Becker K.Begzsuren N.Berger M.Bertani D.Bettoni f.Bianchi j.Bloms A.Bortone I.Boyko R.A.Briere A.Brueggemann 蔡浩蔡啸 A.calcaterra 曹国富曹宁 s.A.cetin 常劲帆常万玲 G.chelkov 陈琛陈刚陈和生陈玛丽陈申见 T.chen 陈旭荣 X.T.chen 陈元柏陈卓俊成伟帅初晓 G.cibinetto f.c.s.io 崔佳佳代洪亮代建平 A.Dbeyssi R.Ede Boer D.Dedovich 邓子艳 A.Denig I.Denysenko M.Destefanis f.De Mori 丁勇董静董燎原董明义董翔杜书先 P.Egorov 范玉兰方建房双世方文兴方易 R.farinelli L.fava f.feldbauer G.felici 封常青冯俊华 K.fischer M.fritsch c.fritzsch 傅成栋高涵高原宁高扬 s.Garbolino I.Garzia 葛潘婷耿聪 E.M.Gersabeck A Gilman K.Goetzen 龚丽龚文煊 W.Gradl M.Greco 顾旻皓关春懿郭爱强郭立波郭如盼郭玉萍 A.Guskov 韩婷婷韩文颖郝喜庆 f.A.Harris 何凯凯何康林 f.H.Heinsius c.H.Heinz 衡月昆 c.Herold M.Himmelreich T.Holtmann 侯国一侯颖锐侯治龙胡海明 j.f.Hu 胡涛胡誉黄光顺黄凯旋黄麟钦黄麟钦黄性涛黄燕萍 Z.Huang T.Hussain N Hüsken W.Imoehl M.Irshad j.j.c.s.n s.j.eger s.j.nchiv q.j. 姬清平季晓斌季筱璐吉钰瑶贾泽坤姜侯兵姜赛赛江晓山 y.j.ang 焦健斌焦铮金山金毅荆茂强 T.j.hansson N.Kalantar-Nayestanaki 康晓珅 R.Kappert M.Kavatsyuk 柯百谦 I.K.Keshk A.Khoukaz P.Kiese R.Kiuchi R.Kliemt L.Koch O.B.Kolcu B.Kopf M.Kuemmel M.Kuessner A.Kupsc W.Kühn j.j.Lane j.s.Lange P.Larin A.Lavania L.Lavezzi 雷祚弘 H.Leithoff M.Lellmann T.Lenz 李聪李翠李春花李澄李德民李飞李刚李贺 H.Li 李海波李惠静 H.N.Li j.q.Li 李静舒李井文李科 L.j.Li 李龙科李蕾李明浩李培荣李素娴栗帅迎李腾李卫东李卫国李旭红李晓玲李晓宇李紫源梁浩梁昊梁浩梁勇飞梁羽铁廖广睿廖龙洲 j.Libby A.Limphirat c.X.Lin 林德旭 T.Lin 刘北江刘春秀 D.Liu 刘福虎刘芳刘峰 G.M.Liu H.Liu 刘怀民刘欢欢刘汇慧刘建北刘佳俊刘晶译刘凯刘魁勇刘珂刘亮刘美宏刘佩莲刘倩刘树彬刘桐刘维克刘卫民刘翔刘英刘玉斌刘振安刘智青娄辛丑卢飞翔吕海江吕军光陆小玲卢宇卢云鹏卢泽辉罗成林罗民兴罗涛罗小兰吕晓睿吕翌丰马凤才马海龙马连良马明明马秋梅马润秋马瑞廷马骁妍马尧 fEMaas M.Maggiora s.Maldaner s.Malde q.A.Malik A.Mangoni 冒亚军毛泽普 s.Marcello 孟召霞 j.G.Messchendorp G.Mezzadri H.Miao 闵天觉 R.E.Mitchell 莫晓虎 N.yu.Muchnoi H.Muramatsu y.Nefedov f.Nerling I.B.Nikolaev 宁哲 s.Nisar 牛艳 s.L.Olsen 欧阳群 s.Pacetti 潘祥 y.Pan A.Pathak A.Pathak M.Pelizaeus 彭海平 K.Peters j.Pettersson 平加伦平荣刚 s.Plura s.Pogodin R.Poling V.Prasad 齐法制齐航漆红荣祈鸣齐天钰钱森钱文斌钱圳乔从丰秦佳佳秦丽清覃潇平秦小帅秦中华邱进发屈三强 institute of High Energy Physics Beijing 100049China Beihang University Beijing 100191China Beij.ng 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 100190China cOMsATs University Islamabad Lahore CampusDefence RoadOff Raiwind Road54000 LahorePakistan fudan University Shanghai 200433China 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 Hangzhou Normal University Hangzhou 310036China Helmholtz institute Mainz Staudinger Weg 18D-55099 MainzGermany Henan Normal University Xinxiang 453007China Henan University of science and technology Luoyang 471003China Henan University of technology Zhengzhou 450001China Huangshan college Huangshan 245000China Hunan Normal University Changsha 410081China Hunan University Changsha 410082China Indian institute of technology Madras Chennai 600036India Indiana University BloomingtonIndiana 47405USA INfN Laboratori Nazionali di frascati INFN Laboratori Nazionali di FrascatiI-00044FrascatiItaly INfN Laboratori Nazionali di frascati INFN Sezione di PerugiaI-06100PerugiaItaly INfN Laboratori Nazionali di frascati University of PerugiaI-06100PerugiaItaly INfN sezione di ferrara INFN Sezione di FerraraI-44122FerraraItaly INfN sezione di ferrara University of FerraraI-44122FerraraItaly institute of Modern Physics Lanzhou 730000China institute of Physics and technology Peace Ave.54BUlaanbaatar 13330Mongolia j.lin University Changchun 130012China j.hannes Gutenberg University of Mainz Johann-Joachim-Becher-Weg 45D-55099 MainzGermany j.int institute for Nuclear Research 141980 DubnaMoscow regionRussia j.stus-Liebig-Universitaet Giessen II.Physikalisches InstitutHeinrich-Buff-Ring 16

The integrated luminosities of data samples collected in the BEsⅢ experiment in 2016-2017 at centerof-mass energies between 4.19 and 4.28 GeV are measured with a precision better than 1% by analyzing large-angle Bhabha scattering *** integrated luminosities of old datasets collected in 2010-2014 are updated by considering corrections related to detector performance,offsetting the effect of newly discovered readout errors in the electromagnetic calorimeter,which can haphazardly occur.

关键词： integrated luminosity e^(+)e^(-)annihilation Bhabha scattering

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Measurements of the center-of-mass energies of e~+e~- collisions at BEsⅢ

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chinese Physics c 2021年第10期45卷 11-19页

作者： M.Ablikim M.N.Achasov P.Adlarson s.Ahmed M.Albrecht R.Aliberti A.Amoroso M.R.An q.An X.H.Bai y.Bai O.Bakina R.Baldini ferroli I.Balossino y.Ban K.Begzsuren N.Berger M.Bertani D.Bettoni f.Bianchi j.Bloms A.Bortone j.f.chang W.L.chang G.chelkov D.y.chen G.chen H.s.chen M.L.chen s.j.chen X.R.chen y.B.chen Z.j.chen W.s.cheng G.cibinetto f.c.s.io X.f.cui H.L.Dai X.c.Dai A.Dbeyssi R.E.de Boer D.Dedovich Z.y.Deng A.Denig L.fava f.feldbauer G.felici c.q.feng j.H.feng M.fritsch c.D.fu y.Gao X.q.Hao f.A.Harris K.L.He f.H.Heinsius c.H.Heinz T.Held y.K.Heng c.Herold y.Hu G.s.Huang L.q.Huang X.T.Huang y.P.Huang Z.Huang T.Hussain N Husken W.Ikegami Andersson W.Imoehl M.Irshad s.j.eger s.j.nchiv q.j. q.P.j. M.q.j.ng T.j.hansson N.Kalantar-Nayestanaki X.s.Kang R.Kappert M.Kavatsyuk B.c.Ke I.K.Keshk A.Khoukaz P.Kiese R.Kiuchi R.Kliemt L.Koch O.B.Kolcu B.Kopf M.Kuemmel M.Kuessner A.Kupsc M.G.Kurth W.Kuhn j.j.Lane j.s.Lange P.Larin A.Lavania L.Lavezzi Z.H.Lei H.Leithoff M.Lellmann T.Lenz c.Li j.q.Li j.s.Li Ke Li L.K.Li Lei Li P.R.Li s.y.Li W.D.Li W.G.Li X.H.Li G.R.Liao 廖龙洲 j.Libby c.X.Lin B.j.Liu c.X.Liu D.Liu f.H.Liu fang Liu feng Liu H.B.Liu H.M.Liu Huanhuan Liu Huihui Liu j.B.Liu j.L.Liu j.y.Liu K.Liu K.y.Liu L.Liu M.H.Liu P.L.Liu q.Liu q.Liu s.B.Liu M.M.Ma q.M.Ma R.q.Ma R.T.Ma X.X.Ma X.y.Ma f.E.Maas M.Maggiora s.Maldaner s.Malde q.A.Malik A.Mangoni y.j.Mao Z.P.Mao s.Marcello Z.X.Meng j.G.Messchendorp G.Mezzadri T.j.Min R.E.Mitchell X.H.Mo N.yu.Muchnoi H.Muramatsu s.Nakhoul y.Nefedov f.Nerling I.B.Nikolaev Z.Ning P.Patteri M.Pelizaeus H.P.Peng K.Peters j.Pettersson j.L.Ping R.G.Ping s.Pogodin Z.qian c.f.qiao L.q.qin X.P.qin X.s.qin Z.H.qin j.f.qiu s.q.qu K.H.Rashid K.Ravindran c.f.Redmer A.Rivetti V.Rodin M.Rolo G.Rong ch.Rosner M.Rump H.s.sang A.sarantsev y.schelhaas c.s.hnier K.schoenning M.scodeggio D.c.s.an W.shan X.y.shan j.f.shangguan M.shao c.P.shen H.f.shen P.X.shen X.y.shen H.c.s.i R.s.shi X.shi X.D shi j.j.song W.M.song y.X.song K.Wang L.L.Wang M.Wang M.Z.Wang Meng Wang W.Wang W.H.Wang W.P.Wang X.Wang X.f.Wang X.L.Wang institute of High Energy Physics G.I.Budker institute of Nuclear Physics sB RAs (BINP) the Novosibirsk state University Uppsala University Helmholtz institute Mainz Bochum Ruhr-University j.hannes Gutenberg University of Mainz University of Turin and INfN University of Turin University of Turin and INfN Liaoning Normal University University of science and technology of china state key laboratory of Particle Detection and Electronics University of j.nan southeast University j.int institute for Nuclear Research INfN Laboratori Nazionali di frascati INFN Laboratori Nazionali di Frascati INfN sezione di ferrara INFN Sezione di Ferrara Peking University state key laboratory of Nuclear Physics and technology institute of Physics and technology University of Muenster University of chinese Academy of sciences the Moscow institute of Physics and technology central china Normal University Nanj.ng University institute of Modern Physics Hunan University school of Physics and Electronics Hunan University University of Turin and INfN IN-FNI-10125TurinItaly Nankai University University of Turin and INfN University of Eastern Piedmont University of Turin and INfN IN-FN sun yat-sen University University of south china Henan Normal University University of Hawaii suranaree University of technology shandong University University of the Punj.b Indiana University University of Groningen Liaoning University shanxi Normal University GsI Helmholtzcentre for Heavy Ion Research GmbH j.stus-Liebig-Universitaet Giessen Ⅱ. Physikalisches Institut Turkish Accelerator center Particle factory Group Istanbul Bilgi University HEP Res. Cent. Istinye University University of Manchester Indian institute of technology Madras qufu Normal University Beij.ng institute of Petrochemical technology Lanzhou University frontiers science center for Rare Isotopes Lanzhou University Lanzhou center for Theoretical Physics Lanzhou University Tsinghua University Guangxi Normal University shanxi University Guangxi University Henan University of science

During the 2016-17 and 2018-19 running periods, the BEsⅢ experiment collected 7.5 fb-1of e~+e~- collision data at center-of-mass energies ranging from 4.13 to 4.44 GeV. These data samples are primarily used for the study of excited charmonium and charmoniumlike states. By analyzing the di-muon proc.s. e~+e~-→(γIsR/fsR)μ~+μ~-, we measure the center-of-mass energies of the data samples with a precision of 0.6 MeV. Through a run-by-run study, we find that the center-of-mass energies were stable throughout most of the data-collection period.

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Measurements of the center-of-mass energies of e^(+)e^(-)collisions at BEsIII

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chinese Physics c 2021年第10期45卷 7-15页

作者： M.Ablikim M.N.Achasov P.Adlarson s.Ahmed M.Albrecht R.Aliberti A.Amoroso M.R.An q.An X.H.Bai y.Bai O.Bakina R.Baldini ferroli I.Balossino y.Ban K.Begzsuren N.Berger M.Bertani D.Bettoni f.Bianchi j.Bloms A.Bortone I.Boyko R.A.Briere H.cai X.cai A.calcaterra G.f.cao N.cao s.A.cetin j.f.chang W.L.chang G.chelkov D.y.chen G.chen H.s.chen M.L.chen s.j.chen X.R.chen y.B.chen Z.j.chen W.s.cheng G.cibinetto f.c.s.io X.f.cui H.L.Dai X.c.Dai A.Dbeyssi R.E.de Boer 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 X.Dong s.X.Du y.L.fan j.f.ng s.s.fang y.fang R.farinelli L.fava f.feldbauer G.felici c.q.feng j.H.feng M.fritsch c.D.fu y.Gao y.Gao y.Gao y.G.Gao I.Garzia P.T.Ge c.Geng E.M.Gersabeck A Gilman K.Goetzen L.Gong W.X.Gong W.Gradl M.Greco L.M.Gu M.H.Gu y.T.Gu c.y Guan A.q.Guo L.B.Guo R.P.Guo y.P.Guo A.Guskov T.T.Han W.y.Han X.q.Hao f.A.Harris K.L.He f.H.Heinsius c.H.Heinz T.Held y.K.Heng c.Herold M.Himmelreich T.Holtmann G.y.Hou y.R.Hou Z.L.Hou H.M.Hu j.f.Hu T.Hu y.Hu G.s.Huang L.q.Huang X.T.Huang y.P.Huang Z.Huang T.Hussain N Husken W.Ikegami Andersson W.Imoehl M.Irshad s.j.eger s.j.nchiv q.j. q.P.j. X.B.j. X.L.j. y.y.j. H.B.j.ang X.s.j.ang j.B.j.ao Z.j.ao s.j.n y.j.n M.q.j.ng T.j.hansson N.Kalantar-Nayestanaki X.s.Kang R.Kappert M.Kavatsyuk B.c.Ke I.K.Keshk A.Khoukaz P.Kiese R.Kiuchi R.Kliemt L.Koch O.B.Kolcu B.Kopf M.Kuemmel M.Kuessner A.Kupsc M.G.Kurth W.Kuhn j.j.Lane j.s.Lange P.Larin A.Lavania L.Lavezzi Z.H.Lei H.Leithoff M.Lellmann T.Lenz c.Li c.H.Li cheng Li D.M.Li f.Li G.Li H.Li H.Li H.B.Li H.j.Li j.L.Li j.q.Li j.s.Li Ke Li L.K.Li Lei Li P.R.Li s.y.Li W.D.Li W.G.Li X.H.Li X.L.Li Xiaoyu Li Z.y.Li H.Liang H.Liang H.Liang y.f.Liang y.T.Liang G.R.Liao 廖龙洲 j.Libby c.X.Lin B.j.Liu c.X.Liu D.Liu f.H.Liu fang Liu feng Liu H.B.Liu H.M.Liu Huanhuan Liu Huihui Liu j.B.Liu j.L.Liu j.y.Liu K.Liu K.y.Liu L.Liu M.H.Liu P.L.Liu q.Liu q.Liu s.B.Liu shuai Liu T.Liu W.M.Liu X.Liu y.Liu y.B.Liu Z.A.Liu Z.q.Liu X.c.Lou f.X.Lu H.j.Lu j.D.Lu j.G.Lu X.L.Lu y.Lu y.P.Lu c.L.Luo M.X.Luo institute of High Energy Physics Beijing 100049China Beihang University Beijing 100191China Beij.ng 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 100190China cOMsATs University Islamabad Lahore CampusDefence RoadOff Raiwind Road54000 LahorePakistan fudan University Shanghai 200443China 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 Staudinger Weg 18D-55099 MainzGermany Henan Normal University Xinxiang 453007China Henan University of science and technology Luoyang 471003China Huangshan college Huangshan 245000China Hunan Normal University Changsha 410081China Hunan University Changsha 410082China Indian institute of technology Madras Chennai 600036India Indiana University BloomingtonIndiana 47405USA INfN Laboratori Nazionali di frascati INFN Laboratori Nazionali di FrascatiI-00044FrascatiItaly INfN Laboratori Nazionali di frascati INFN Sezione di PerugiaI-06100PerugiaItaly INfN Laboratori Nazionali di frascati University of PerugiaI-06100PerugiaItaly INfN sezione di ferrara INFN Sezione di FerraraI-44122FerraraItaly INfN sezione di ferrara University of FerraraI-44122FerraraItaly 25Institute of Modern PhysicsLanzhou 730000China institute of Modern Physics Lanzhou 730000China institute of Physics and technology Peace Ave.54BUlaanbaatar 13330Mongolia j.lin University Changchun 130012China j.hannes Gutenberg University of Mainz Johann-Joachim-Becher-Weg 45D-55099 MainzGermany j.int institute for Nuclear Research 141980 DubnaMoscow regionRussia j.stus-Liebig-Universitaet Giessen II.Physikali

During the 2016-17 and 2018-19 running periods,the BEsIII experiment collected 7.5 fb of e^(+)e^(-)collision data at center-of-mass energies ranging from 4.13 to 4.44 *** data samples are primarily used for the study of excited charmonium and charmoniumlike *** analyzing the di-muon proc.s. e^(+)e^(-)→(γIsR=fsR)μ^(+)μ^(-),we measure the center-of-mass energies of the data samples with a precision of 0.6 *** a run-by-run study,we find that the center-of-mass energies were stable throughout most of the data-collection period.

关键词： center-of-mass energy e^(+)e^(-) annihilation BEsIII

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