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LOW TEMPERATURE ThERMODy.AMIC STUDy.Of ThE STAbLE AND METASTAbLE PhASES Of SILVER

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Acta Metallurgica Sinica(English Letters) 2007年第5期20卷 355-362页

作者： x.b. li y.q. xie y.z. nie h.j. peng Research Center of Advanced Materials Xiangtan University Xiangtan 411105 China School of Material Science and Engineering University Changsha 410083 China Central South

The low temperature thermody.amics of the stable phase of silver was assessed by.the poly.omial model and Deby. model from the experimental data available in the literature. by.means of the constrained non-linear least squares curve fitting arithmetic, two sets of parameter values were determined. The expression of the thermody.amic functions cp（T） and G（T）-h （298.15K） at 0-298.15K were presented. Only.the low temperature thermody.amics of the metastable phase of silver can be extrapolated by.the Deby. model The expression of the thermody.amic functions cp（T） at 0- 298.15K was presented.

关键词： silver thermody.amic heat capacity SGTE (Scientific Group Thermodata Europe)

STCf conceptual design report (Volume 1): Phy.ics & detector

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frontiers of phy.ics 2024年第1期19卷 1-154页

作者： M.Achasov x.C.Ai L.P.An R.Aliberti q.An x.z.bai y.bai O.bakina A.barny.kov V.blinov V.bobrovnikov D.bodrov A.bogomy.gkov A.bondar I.boy.o z.h.bu f.M.Cai h.Cai j.j.Cao q.h.Cao x.Cao z.Cao q.Chang K.T.Chao D.y.Chen h.Chen h.x.Chen j.f.Chen K.Chen L.L.Chen P.Chen S.L.Chen S.M.Chen S.Chen S.P.Chen W.Chen x.Chen x.f.Chen x.R.Chen y.Chen y.q.Chen h.y.Cheng j.Cheng S.Cheng T.G.Cheng j.P.Dai L.y.Dai x.C.Dai D.Dedovich A.Denig I.Denisenko j.M.Dias D.z.Ding L.y.Dong W.h.Dong V.Druzhinin D.S.Du y.j.Du z.G.Du L.M.Duan D.Epifanov y.L.fan S.S.fang z.j.fang G.fedotovich C.q.feng x.feng y.T.feng j.L.fu j.Gao y.N.Gao P.S.Ge C.q.Geng L.S.Geng A.Gilman L.Gong T.Gong b.Gou W.Gradl j.L.Gu A.Guevara L.C.Gui A.q.Guo f.K.Guo j.C.Guo j.Guo y.P.Guo z.h.Guo A.Guskov K.L.han L.han M.han x.q.hao j.b.he S.q.he x.G.he y.L.he z.b.he z.x.heng b.L.hou T.j.hou y.R.hou C.y.hu h.M.hu K.hu R.j.hu W.h.hu x.h.hu y.C.hu j.hua G.S.huang j.S.huang M.huang q.y.huang W.q.huang x.T.huang x.j.huang y.b.huang y.S.huang N.hüsken V.Ivanov q.P.ji j.j.jia S.jia z.K.jia h.b.jiang j.jiang S.z.jiang j.b.jiao z.jiao h.j.jing x.L.Kang x.S.Kang b.C.Ke M.Kenzie A.Khoukaz I.Koop E.Kravchenko A.Kuzmin y.Lei E.Levichev C.h.li C.li D.y.li f.li G.li G.li h.b.li h.li h.N.li h.j.li h.L.li j.M.li j.li L.li L.li L.y.li N.li P.R.li R.h.li S.li T.li W.j.li x.li x.h.li x.q.li x.h.li y.li y.y.li z.j.li h.liang j.h.liang y.T.liang G.R.liao L.z.liao y.liao C.x.lin D.x.lin x.S.lin b.j.liu C.W.liu D.liu f.liu G.M.liu h.b.liu j.liu j.j.liu j.b.liu K.liu K.y.liu K.liu L.liu q.liu S.b.liu T.liu x.liu y.W.liu y.liu y.L.liu z.q.liu z.y.liu z.W.liu I.Logashenko y.Long C.G.Lu j.x.Lu N.Lu q.f.Lü y.Lu y.Lu z.Lu P.Lukin f.j.Luo T.Luo x.f.Luo y.h.Luo h.j.Ly. x.R.Ly. j.P.Ma P.Ma y.Ma y.M.Ma f.Maas S.Malde D.Matvienko z.x.Meng R.Mitchell A.Nefediev y.Nefedov S.L.Olsen q.Ouy.ng P.Pakhlov G.Pakhlova x.Pan y.Pan E.Passemar y.P.Pei h.P.peng L.peng x.y.peng x.j.peng K.Peters S.Pivovarov E.Py.ta b.b.qi y.q.qi W.b.qian y.q.an C.f.qiao j.j.qin j.j.qin L.q.qin x.S.qin T.L.qiu j.Rademacker C.f.Redmer h.y.Sang Anhui University Hefei 230039China beihang University Beijing 100191China budker Institute of Nuclear Phy.ics Novosibirsk 630090Russia CAS Key.Laboratory.of Theoretical Phy.ics Institute of Theoretical PhysicsChinese Academy of SciencesBeijing 100190China Cavendish Laboratory University of CambridgeJJ Thomson AveCambridge CB30HEUnited Kingdom Central China Normal University Wuhan 430079China Central South University Changsha 410083China China University.of Geosciences Wuhan 430074China China University.of Mining and Technology Xuzhou 221116China École Poly.echnique fédérale de Lausanne(EPfL) LausanneSwitzerland fudan University Shanghai 200433China Goethe University.frankfurt D-60325 Frankfurt am MainGermany Guangxi Normal University Guilin 541004China Guangxi Uninversity Nanning 530004China hangzhou Institute for Advanced Study UCASHangzhou 310024China hebei Normal University Shijiazhuang 050024China hebei University Baoding 071002China hefei University.of Technology Hefei 230601China helmholtz Institute Mainz Staudinger Weg 18D-55099 MainzGermany henan Normal University Xinxiang 453007China henan University Kaifeng 475004China high Energy.Phy.ics Center Chung-Ang UniversitySeoul 06974Korea higher School of Economy.11 Pokrovsky.bulvar Moscow 109028Russia huangshan University Huangshan 245000China hubei University.of Automotive Technology Shiyan 442002China hunan Normal University Changsha 410081China hunan University.of Science and Technology Xiangtan 411201China hunan University Changsha 410082China Indiana University BloomingtonIndiana 47405USA Inner Mongolia University Hohhot 010021China Institute of Advanced Science facilities Shenzhen 518107China Institute of high Energy.Phy.ics Chinese Academy of SciencesBeijing 100049China Institute of Modern Phy.ics Chinese Academy of SciencesLanzhou 730000China Institute of Phy.ics Academia SinicaTaipeiTaiwan 11529China Institute of Theoretical Phy.ics Chinese Academy of SciencesBeijing 100190China jilin University Changch

The superτ-charm facility.STCf)is an electron–positron collider proposed by.the Chinese particle phy.ics *** is designed to operate in a center-of-mass energy.range from 2 to 7 GeV with a peak luminosity.of 0.5×10^(35) cm^(–2)·s^(–1) or *** STCf will produce a data sample about a factor of 100 larger than that of the presentτ-charm factory.the bEPCII,providing a unique platform for exploring the asy.metry.of matter-antimatter(charge-parity.violation),in-depth studies of the internal structure of hadrons and the nature of non-perturbative strong interactions,as well as searching for exotic hadrons and phy.ics bey.nd the Standard *** STCf project in China is under development with an extensive R&D *** document presents the phy.ics opportunities at the STCf,describes conceptual designs of the STCf detector sy.tem,and discusses future plans for detector R&D and phy.ics case studies.

关键词： electron–positron collider tau-charm region high luminosity STCf detector conceptual design

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

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Chinese Phy.ics 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.boy.o 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.Cossio x.f.Cui h.L.Dai x.C.Dai A.Dbey.si R.E.de boer D.Dedovich z.y.Deng A.Denig I.Deny.enko 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.fang 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.jaeger S.janchiv q.ji q.P.ji x.b.ji x.L.ji y.y.ji h.b.jiang x.S.jiang j.b.jiao z.jiao S.jin y.jin M.q.jing T.johansson N.Kalantar-Nay.stanaki x.S.Kang R.Kappert M.Kavatsy.k 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 xiaoy. li z.y.li h.liang h.liang h.liang y.f.liang y.T.liang G.R.liao L. z. liao 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 Institute of high Energy.Phy.ics 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 100190China COMSATS University.Islamabad Lahore CampusDefence RoadOff Raiwind Road54000 LahorePakistan fudan University Shanghai 200443China G.I.budker Institute of Nuclear Phy.ics 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 Phy.ics Lanzhou 730000China Institute of Phy.ics and Technology Peace Ave.54BUlaanbaatar 13330Mongolia jilin University Changchun 130012China 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.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 *** analy.ing the di-muon process 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

Study.of bESIII trigger efficiencies with the 2018 j/ψ data

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Chinese Phy.ics C 2021年第2期45卷 48-55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.boy.o 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.Cossio x.f.Cui h.L.Dai x.C.Dai A.Dbey.si R.E.de boer D.Dedovich z.y.Deng A.Denig I.Deny.enko 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.fang 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 S.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 h hüsken K.L.he f.h.heinsius C.h.heinz T.held y.K.heng C.herold M.himmelreich T.holtmann 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 W.Ikegami Andersson W.Imoehl M.Irshad S.jaeger S.janchiv q.ji q.P.ji x.b.ji x.L.ji h.b.jiang x.S.jiang j.b.jiao z.jiao S.jin y.jin T.johansson N.Kalantar-Nay.stanaki x.S.Kang R.Kappert M.Kavatsy.k 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.Kühn 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 z.y.li h.liang h.liang h.liang y.f.liang y.T.liang L.z.liao 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 Ke 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 b P.W.Luo T.Luo x.L.Luo S Institute of high Energy.Phy.ics 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 100190China COMSATS University.Islamabad Lahore CampusDefence RoadOff Raiwind Road54000 LahorePakistan fudan University Shanghai 200443China GIbudker Institute of Nuclear Phy.ics 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 Normal University Changsha 410081China hunan University Changsha 410082China Indian Institute of Technology.Madras Chennai 600036India Indiana University BloomingtonIndiana 47405USA (A)INfN Laboratori Nazionali di frascati I-00044FrascatiItaly(B)INFN Sezione di PerugiaI-06100PerugiaItaly(C)University of PerugiaI-06100PerugiaItaly (A)INfN Sezione di ferrara I-44122FerraraItaly(B)University of FerraraI-44122FerraraItaly Institute of Modern Phy.ics Lanzhou 730000China Institute of Phy.ics and Technology Peace Ave54BUlaanbaatar 13330Mongolia jilin University Changchun 130012China johannes Gutenberg University.of Mainz Johann-Joachim-Becher-Weg 45D-55099 MainzGermany joint Institute for Nuclear Research 141980 DubnaMoscow regionRussia justus-liebig-Universitaet Giessen IIPhysikalisches InstitutHeinrich-Buff-Ring 16D-35392GiessenGermany KVI-CART University of GroningenNL-9747 AA GroningenThe Netherlands Lanzhou University Lanzhou 730000China liaoning Normal Unive

Using a dedicated data sample taken in 2018 on the j/ψpeak,we perform a detailed study.of the trigger efficiencies of the bESIII *** efficiencies are determined from three representative phy.ics processes,namely.bhabha scattering,dimuon production and generic hadronic events with charged *** combined efficiency.of all active triggers approaches 100%in most cases,with uncertainties small enough not to affect most phy.ics analy.es.

关键词： bESIII trigger efficiency bhabha dimuon hadronic events

future Phy.ics Programme of bESⅢ

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Chinese Phy.ics C 2020年第4期44卷 I0001-I0004,1-102页

作者： M.Ablikim M.N.Achasov P.Adlarson S.Ahmed M.Albrecht M.Alekseev A.Amoroso f.f.An q.An y.bai O.bakina R.baldini ferroli y.ban K.begzsuren j.V.bennett N.berger M.bertani D.bettoni f.bianchi j biernat j.bloms I.boy.o R.A.briere L.Calibbi h.Cai x.Cai A.Calcaterra G.f.Cao N.Cao S.A.Cetin j.Chai j.f.Chang W.L.Chang j.Charles G.Chelkov Chen G.Chen h.S.Chen j.C.Chen M.L.Chen S.j.Chen y.b.Chen h.y.Cheng W.Cheng G.Cibinetto f.Cossio x.f.Cui h.L.Dai j.P.Dai x.C.Dai A.Dbey.si D.Dedovich z.y.Deng A.Denig Deny.enko M.Destefanis S.Descotes-Genon f.De Mori y.Ding C.Dong j.Dong L.y.Dong M.y.Dong z.L.Dou S.x.Du S.I.Eidelman j.z.fan j.fang S.S.fang y.fang R.farinelli L.fava f.feldbauer G.felici C.q.feng M.fritsch C.D.fu y.fu q.Gao x.L.Gao y.Gao y.Gao y.G.Gao z.Gao b.Garillon I.Garzia 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 A.q.Guo f.K.Guo L.b.Guo R.P.Guo y.P.Guo A.Guskov S.han x.q.hao f.A.harris K.L.he f.h.heinsius T.held y.K.heng y.R.hou z.L.hou h.M.hu j.f.hu T.hu y.hu G.S.huang j.S.huang x.T.huang x.z.huang z.L.huang N.huesken T.hussain W.Ikegami Andersson W.Imoehl M.Irshad q.ji q.P.ji x.b.ji x.L.ji h.L.jiang x.S.jiang x.y.jiang j.b.jiao z.jiao D.P.jin S.jin y.jin T.johansson N.Kalantar-Nay.stanaki x.S.Kang R.Kappert M.Kavatsy.k b.C.Ke I.K.Keshk T.Khan A.Khoukaz P.Kiese R.Kiuchi R.Kliemt L.Koch O.b.Kolcu b.Kopf M.Kuemmel M.Kuessner A.Kupsc M.Kurth M.G.Kurth W.Kuhn j.S.Lange P.Larin L.Lavezzi h.Leithoff T.Lenz C.li Cheng li D.M.li f.li f.y.li G.li h.b.li h.j.li j.C.li j.W.li Ke li L.K.li Lei li P.L.li P.R.li q.y.li W.D.li W.G.li x.h.li x.L.li x.N.li x.q.li z.b.li h.liang h.liang y.f.liang y.T.liang G.R.liao L.z.liao j.libby.C.x.lin D.x.lin y.j.lin b.liu b.j.liu C.x.liu D.liu D.y.liu f.h.liu fang liu feng liu h.b.liu h.M.liu huanhuan liu huihui liu j.b.liu j.y.liu K.y.liu Ke liu q.liu S.b.liu T.liu x.liu x.y.liu y.b.liu z.A.liu zhiqing liu y.f.Long x.C.Lou h.j.Lu j.D.Lu j.G.Lu y.Lu y.P.Lu C.L.Luo M.x.Luo P.W.Luo T.Luo x.L.Luo S.Lusso x.R.Ly. f.C.Ma h.L.Ma L.L.Ma M.M.Ma q.M.Ma x.N.Ma x.x. Institute of high Energy.Phy.ics 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 100190China COMSATS University.Islamabad Lahore CampusDefence RoadOff Raiwind Road54000 LahorePakistan fudan University Shanghai 200443China G.I.budker Institute of Nuclear Phy.ics 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 Normal University Changsha 410081China hunan University Changsha 410082China Indian Institute of Technology.Madras Chennai 600036India Indiana University BloomingtonIndiana 47405USA INfN Laboratori Nazionali di frascati I-00044FrascatiItaly INfN Sezione di ferrara I-44122FerraraItaly Institute of Phy.ics and Technology Peace Ave.54BUlaanbaatar 13330Mongolia 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 Shandong University Jinan 250100China Shanghai

There has recently.been a dramatic renewal of interest in hadron spectroscopy.and charm phy.ics. This renaissance has been driven in part by.the discovery.of a plethora of charmonium-like xy. states at bESⅢ and b factories, and the observation of an intriguing proton-antiproton threshold enhancement and the possibly.related x(1835) meson state at bESⅢ, as well as the threshold measurements of charm mesons and charm bary.ns. We present a detailed survey.of the important topics in tau-charm phy.ics and hadron phy.ics that can be further explored at bESⅢ during the remaining operation period of bEPCⅡ. This survey.will help in the optimization of the data-taking plan over the coming y.ars, and provides phy.ics motivation for the possible upgrade of bEPCⅡ to higher luminosity.

关键词： meson hadron optimization

Amplitude analy.is of the decay. D^(0)→π^(+)π^(−)π^(+)π^(−)and D^(0)→π^(+)π^(−)π^(0)π^(0)

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Chinese Phy.ics C 2024年第8期48卷 6-33页

作者： M.Ablikim M.N.Achasov P.Adlarson O.Afedulidis x.C.Ai R.Aliberti A.Amoroso q.An y.bai O.bakina I.balossino y.ban h.-R.bao V.batozskay. K.begzsuren N.berger M.berlowski M.bertani D.bettoni f.bianchi E.bianco A.bortone I.boy.o R.A.briere A.brueggemann h.Cai x.Cai A.Calcaterra G.f.Cao N.Cao S.A.Cetin j.f.Chang W.L.Chang G.R.Che G.Chelkov C.Chen C.h.Chen Chao Chen G.Chen h.S.Chen M.L.Chen S.j.Chen S.L.Chen S.M.Chen T.Chen x.R.Chen x.T.Chen y.b.Chen y.q.Chen z.j.Chen z.y.Chen S.K.Choi x.Chu G.Cibinetto f.Cossio j.j.Cui h.L.Dai j.P.Dai A.Dbey.si R.E.de boer D.Dedovich C.q.Deng z.y.Deng A.Denig I.Deny.enko M.Destefanis f.De Mori b.fang S.S.fang W.x.fang y.fang y.q.fang R.farinelli L.fava f.feldbauer G.felici C.q.feng j.h.feng y.T.feng K.fischer M.fritsch C.D.fu j.L.fu y.W.fu h.Gao y.N.Gao y.ng Gao S.Garbolino I.Garzia P.T.Ge z.W.Ge C.Geng E.M.Gersabeck b.Ding x.x.Ding y.Ding y.Ding j.Dong L.y.Dong M.y.Dong x.Dong M.C.Du S.x.Du z.h.Duan P.Egorov y.h.fan j.fang jA.Gilman K.Goetzen L.Gong W.x.Gong W.Gradl S.Gramigna M.Greco M.h.Gu y.T.Gu C.y.Guan z.L.Guan A.q.Guo L.b.Guo M.j.Guo R.P.Guo y.P.Guo A.Guskov j.Gutierrez K.L.han T.T.han x.q.hao f.A.harris K.K.he K.L.he f.h.heinsius C.h.heinz y.K.heng C.herold T.holtmann P.C.hong G.y.hou x.T.hou y.R.hou z.L.hou b.y.hu h.M.hu j.f.hu T.hu y.hu G.S.huang K.x.huang L.q.huang x.T.huang y.P.huang T.hussain f.h\"olzken N.h\"usken N.in der Wiesche M.Irshad j.jackson S.janchiv j.h.j.ong q.ji q.P.ji W.ji x.b.ji x.L.ji y.y.ji x.q.jia z.K.jia D.jiang h.b.jiang P.C.jiang S.S.jiang T.j.jiang x.S.jiang y.jiang j.b.jiao j.K.jiao z.jiao S.jin y.jin M.q.jing x.M.jing T.johansson S.Kabana N.Kalantar-Nay.stanaki x.L.Kang x.S.Kang M.Kavatsy.k b.C.Ke V.Khachatry.n A.Khoukaz R.Kiuchi O.b.Kolcu b.Kopf M.Kuessner x.Kui A.Kupsc W.K\"uhn j.j.Lane P.Larin L.Lavezzi T.T.Lei z.h.Lei h.Leithoff M.Lellmann T.Lenz C.li C.li C.h.li Cheng li D.M.li f.li G.li h.li h.b.li h.j.li h.N.li hui li j.R.li j.S.li K.li L.j.li L.K.li Lei li M.h.li P.R.li q.M.li q.x.li R.li S.x.li T.li W.D.li W.G.li x.li x.h.li x.L.li x.y.li y Institute of high Energy.Phy.ics Chinese Academy of SciencesBeijing 100049China beihang University Beijing 100191China bochum Ruhr-University D-44780 BochumGermany budker Institute of Nuclear Phy.ics Sb RAS(bINP) Novosibirsk 630090Russia Carnegie Mellon University PittsburghPennsylvania 15213USA Central China Normal University Wuhan 430079China Central South University Changsha 410083China China Center of Advanced Science and Technology Beijing 100190China China University.of Geosciences Wuhan 430074China Chung-Ang University Seoul06974Republic of Korea COMSATS University.Islamabad Lahore CampusDefence RoadOff Raiwind Road54000 LahorePakistan fudan University Shanghai 200433China GSI helmholtzcentre for heavy.Ion Research Gmbh D-64291 DarmstadtGermany Guangxi Normal University Guilin 541004China Guangxi University Nanning 530004China hangzhou Normal University Hangzhou 310036China hebei University Baoding 071002China helmholtz Institute Mainz Staudinger Weg 18D-55099 MainzGermany henan Normal University Xinxiang 453007China henan University Kaifeng 475004China 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 Inner Mongolia University Hohhot 010021China Institute of Modern Phy.ics Lanzhou 730000China Institute of Phy.ics and Technology Peace Avenue 54BUlaanbaatar 13330Mongolia Instituto de A

Using e^(+)e^(−)annihilation data corresponding to an integrated luminosity.of 2.93 fb^(−1)taken at the center-of-mass energy.s=3.773 GeV with the bESIII detector,a joint amplitude analy.is is performed on the decay. D^(0)→π^(+)π^(−)π^(+)π^(−)and D^(0)→π^(+)π^(−)π^(0)π^(0)(non-η).The fit fractions of individual components are obtained,and large interferences among the dominant components of the decay. D^(0)→a_(1)(1260)π,D^(0)→π(1300)π,D^(0)→ρ(770)ρ(770),and D^(0)→2(ππ)_(S)are observed in both *** the obtained amplitude model,the CP-even fractions of D^(0)→π^(+)π^(−)π^(+)π^(−)and D^(0)→π^(+)π^(−)π^(0)π^(0)(non-η)are determined to be(75.2±1.1_(stat).±1.5_(sy.t.))%and(68.9±1.5_(stat).±2.4_(sy.t.))%,*** branching fractions of D^(0)→π^(+)π^(−)π^(+)π^(−)and D^(0)→π^(+)π^(−)π^(0)π^(0)(non-η)are measured to be(0.688±0.010_(stat.)±0.010_(sy.t.))%and(0.951±0.025_(stat.)±0.021_(sy.t.))%,*** amplitude analy.is provides an important model for the binning strategy.in measuring the strong phase parameters of D^(0)→4πwhen used to determine the CKM angleγ(ϕ_(3))via the b^(−)→DK^(−)decay.

关键词： bESIII D^(0)meson decay. amplitude analy.is CP-even fraction

Search for electron-antineutrinos associated with gravitational-wave events GW150914,GW151012,GW151226,GW170104,GW170608,GW170814,and GW170817 at Day. bay

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Chinese Phy.ics C 2021年第5期45卷 190-201页

作者： f.P.An A.b.balantekin h.R.band M.bishai S.bly.h G.f.Cao j.Cao j.f.Chang y.Chang h.S.Chen S.M.Chen y.Chen y.x.Chen j.Cheng z.K.Cheng j.j.Cherwinka M.C.Chu j.P.Cummings O.Dalager f.S.Deng y.y.Ding M.V.Diwan T.Dohnal j.Dove M.Dvorak D.A.Dwy.r j.P.Gallo M.Gonchar G.h.Gong h.Gong W.q.Gu j.y.Guo L.Guo x.h.Guo y.h.Guo z.Guo R.W.hackenburg S.hans M.he K.M.heeger y.K.heng A.higuera y.K.hor y.b.hsiung b.z.hu j.R.hu T.hu z.j.hu h.x.huang x.T.huang y.b.huang P.huber D.E.jaffe K.L.jen x.L.ji x.P.ji R.A.johnson D.jones L.Kang S.h.Kettell S.Kohn M.Kramer T.j.Langford j.Lee j.h.C.Lee R.T.Lei R.Leitner j.K.C.Leung f.li j.j.li q.j.li S.li S.C.li W.D.li x.N.li x.q.li y.f.li z.b.li h.liang C.j.lin G.L.lin S.lin j.j.ling j.M.link L.littenberg b.R.littlejohn j.C.liu j.L.liu C.Lu h.q.Lu j.S.Lu K.b.Luk x.b.Ma x.y.Ma y.q.Ma C.Marshall D.A.Martinez Caicedo K.T.MeDonald R.D.McKeown y.Meng j.Napolitano D.Naumov E.Naumova j.P.Ochoa-Ricoux A.OIshevskiy.h.-R.Pan j.Park S.Patton j.C.peng C.S.j.Pun f.z.qi M.qi x.qian N.Raper j.Ren C.Morales Reveco R.Rosero b.Roskovec x.C.Ruan h.Steiner j.L.Sun T.Tmej K.Treskov W.-h.Tse C.E.Tull b.Viren V.Vorobel C.h.Wang j.Wang M.Wang N.y.Wang R.G.Wang W.Wang W.Wang x.Wang y.Wang y.f.Wang z.Wang z.Wang z.M.Wang h.y.Wei L.h.Wei L.j.Wen K.Whisnant C.G.White h.L.h.Wong E.Worcester D.R.Wu f.L.Wu q.Wu W.j.Wu D.M.xia z.q.xie z.z.xing j.L.xu T.xu T.xue C.G.y.ng L.y.ng y.z.y.ng h.f.y.o M.y. M.y.h b.L.y.ung h.z.y. z.y.y. b.b.y.e S.zeng y.z.ng L.zhan C.zhang f.y.z.ang h.h.zhang j.W.zhang q.M.zhang x.T.zhang y.M.zhang y.x.zhang y.y.z.ang z.j.zhang z.P.zhang z.y.z.ang j.zhao L.zhou h.L.zhuang j.h.zou Instiute of Modern Phy.ics East China University of Science and TechnologyShanghai 200237 University.of Wisconsin MadisonWisconsin 53706 Wright Laboratory.and Department of Phy.ics Yale UniversityNew HavenConnecticut 06520 brookhaven National Laboratory UptonNew York 11973 Department of Phy.ics National Taiwan UniversityTaipei Institute of high Energy.Phy.ics Beijing 100049 National United University Miao-Li Department of Engineering Phy.ics Tsinghua UniversityBejing 100084 Shenzhen University Shenzhen 518060 Sun y.t-Sen(zhongshan)University Guangzhou North China Electric Power University Bejjing 102206 Chinese University.of hong Kong Hong Kong 999077 Siena College LoudonvilleNew York 12211 Department of Phy.ics and Astronomy University of CaliforniaIrvineCaliformia 92697 University.of Science and Technology.of China Hefei 230026 Charles University Faculty of Mathematics and PhysicsPrague Department of Phy.ics University of llinois at Urbana-ChampaignUrbanaIlinois 61801 Lawrence berkeley.National Laboratory BerkeleyCalifornia 94720 Department of Phy.ics Illinois Institute of TechnologyChicagoIllinois 60616 joint Institute for Nuclear Research DubnaMoscow Region beijing Normal University Beijing 100875 Department of Nuclear Science and Technology School of Energy and Power EngineeringXi'an Jiaotong UniversityXi'an 710049 Department of Phy.ics University of HoustonHoustonTexas 77204 China Institute of Atomic Energy Beijing 102413 Shandong University Jinan 250100 Guangxi University Nanning 530004 Center for Neutrino Phy.ics Virginia TechBlacksburgVirginia 24061 Institute of Phy.ics National Chiao-Tung UniversityHsinchu Department of Phy.ics University of CincinnatiCincinnatiOhio 45221 Department of Phy.ies Collge of Science and TechnologyTemple UniversityPhiladelphiaPennsylvania 19122 Dongguan University.of Technology Dongguan 523808 Department of Phy.ics University of CaliforniaBerkeleyCalifornia 94720 Department of Phy.ics The University of Hong KongPokfulamHong Kong 999077 School

The establishment of a possible connection between neutrino emission and gravitational-wave(GW)bursts is important to our understanding of the phy.ical processes that occur when black holes or neutron stars *** the Day. bay.experiment,using the data collected from December 2011 to August 2017,a search was per-formed for electron-antineutrino signals that coincided with detected GW events,including GW150914,GW151012,GW151226,GW170104,GW170608,GW 170814,and GW *** used three time windows of±10,±500,and±1000 s relative to the occurrence of the GW events and a neutrino energy.range of 1.8 to 100 MeV to search for correlated neutrino *** detected electron-antineutrino candidates were consistent with the expected background rates for all the three time *** monochromatic spectra,we found upper limits(90%confidence level)of the electron-antineutrino fluence of(1.13-2.44)×10^(11)cm^(-2)at 5 MeV to 8.0×10^(7)cm^(-2)at 100 MeV for the three time w *** the assumption of a fermi-Dirac spectrum,the upper limits were found to be(5.4-7.0)×10^(9)cm^(2)for the three time windows.

关键词： grav itational waves electron-antineutrinos fluence upper limit

Evidence for the decay. of ∧_c^+→∑^+η and ∑^+η’

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Chinese Phy.ics C 2019年第8期43卷 15-23页

作者： M.Ablikim f.f.An q.An y.bai y.ban h.Cai x.Cai G.f.Cao j.f.Chang G.Chen h.S.Chen j.C.Chen M.L.Chen P.L.Chen S.j.Chen y.b.Chen W.Cheng h.LDai j.P.Dai z.y.Deng y.Ding C.Dong j.Dong L.y.Dong M.y.Dong z.L.Dou S.x.Du P.f.Duan j.z.fan j.fang S.S.fang y.fang C.q.feng C.D.fu y.fu q.Gao x.L.Gao y.Gao y.G.Gao z.Gao L.Gong W.x.Gong L.M.Gu M.h.Gu y.T.Gu A.q.Guo L.b.Guo R.P.Guo y.P.Guo S.han x.q.hao K.L.he y.K.heng z.L.hou h.M.hu j.f.hu T.hu y.hu G.S.huang j.S.huang x.T.huang x.z.huang z.L.huang q.ji q.P.ji x.b.ji x.L.ji x.S.jiang x.y.jiang j.b.jiao z.jiao D.P.jin S.jin y.jin x.S.Kang b.C.Ke C.li Cheng li D.M.li f.li f.y.li G.li h.b.li h.j.li j.C.li j.W.li Ke li Lei li P.L.li P.R.li q.y.li T.li W.D.li W.G.li x.L.li x.N. li x.q.li z.b.li h.liang y.f.liang y.T.liang G.R.liao L.z.liao C.x.lin D.x.lin b.liu b.j.liu C.x.liu D.liu D.y.liu f.h.liu fang liu feng liu h.b.liu h.L.liu h.M.liu huanhuan liu huihui liu j.b.liu j.y.liu K.liu K.y.liu Ke liu q.liu S.b.liu x.liu y.b.liu z.A.liu zhiqing liu y.f.Long x.C.Lou h.j.Lu j.D.Lu j.G.Lu y.Lu y.P.Lu C.L.Luo M.x.Luo T.Luo x.L.Luo x.R.Ly. f.C.Ma h.L.Ma L.L.Ma M.M.Ma q.M.Ma x.N.Ma x.x.Ma x.y.Ma y.M.Ma y.j.Mao z.P.Mao z.x.Meng j.Min T.j.Min x.h.Mo y.j.Mo z.Ning S.L.Niu S.L.Olsen q.Ouy.ng y.Pan h.P.peng j.L.Ping R.G.Ping h.R.qi M.qi T.y.q. S.qian C.f.qiao N.qin z.h.qin j.f.qiu S.q.qu G.Rong W.Shan x.y.Shan M.Shao C.P. Shen P.x.Shen x.y.Shen h.y.Sheng x.Shi j.j.Song x.y.Song G.x.Sun j.f.Sun L.Sun S.S.Sun x.h.Sun y.j.Sun y.K.Sun y.z.Sun z.j.Sun z.T.Sun y.T.Tan C.j.Tang G.y.Tang x.Tang b.Wang b.L.Wang C.W.Wang D.y.Wang Dan Wang K.Wang L.L.Wang L.S.Wang M.Wang Meng Wang P.Wang P.L.Wang W.P.Wang x.f.Wang y.Wang y.f.Wang z.Wang z.G.Wang z.y.Wang zongy.an Wang D.h.Wei S.P.Wen L.h.Wu L.j.Wu z.Wu L.xia y.xia D.xiao y.j.xiao z.j.xiao y.G.xie y.h.xie x.A.xiong q.L.xiu G.f.x. j.j.xu L.xu q.j.xu q.N.xu x.P.xu f.y.n L.y.n w.b.y.n W.C.y.n y.h.y.n h.j.y.ng h.x.y.ng L.y.ng S.L.y.ng y.h.y.ng y.x.y.ng y.fan y.ng z.q.y.ng M.y. M.h.y. j.h.y.n z.y.y.u b.x.y. C.x.y. j.S.y. C.z.y.an y.y.an y.z.ng b.x.zhang b.y.z.ang Institute of high Energy.Phy.ics G.I.budker Institute of Nuclear Phy.ics Sb RAS(bINP) the Novosibirsk State University helmholtz Institute Mainz bochum Ruhr-University University.of Turin INfN State Key.Laboratory.of Particle Detection and Electronics University.of Science and Technology.of China Southeast University joint Institute for Nuclear Research INfN Laboratori Nazionali di frascati Peking University Institute of Phy.ics and Technology Indiana University Bloomington Carnegie Mellon University johannes Gutenberg University.of Mainz INfN Sezione di ferrara Wuhan University Ankara University University.of Chinese Academy.of Sciences Istanbul bilgi University the Moscow Institute of Phy.ics and Technology the functional Electronics Laboratory Tomsk State University University.of South China Nanjing University Shanghai jiao Tong University Key.Laboratory.for Particle Phy.ics Astrophysics and CosmologyMinistry of EducationShanghai Key Laboratory for Particle Physics and CosmologyInstitute of Nuclear and Particle Physics liaoning University Nankai University zhengzhou University Tsinghua University University.of ferrara University.of Eastern Piedmont Central China Normal University University.of Minnesota Minneapolis GSI helmholtzcentre for heavy.Ion Research Gmbh Guangxi University Nanjing Normal University KVI-CART University of Groningen henan Normal University University.of hawaii Honolulu Shandong University University.of the Punjab University.of Muenster Uppsala University huangshan College University.of jinan justus-liebig-Universitaet Giessen II.Physikalisches Institut Istanbul Arel University Soochow University beijing Institute of Petrochemical Technology China Center of Advanced Science and Technology Sun y.t-Sen University Sichuan University Guangxi Normal University Indian Institute of Technology.Madras Shanxi University henan University.of Science and Technology Lanzhou University zh.j.ang University fudan University Key.Laboratory.of Nuclear Phy.ics and Ion-beam Application(MOE)and Institute of

We study.the hadronic decay. of ∧c+ to the final states ∑+η and ∑+η’,using an e+e-annihilation data sample of 567 pb-1 taken at a center-of-mass energy.of 4.6 GeV with the bESIII detector at the bEPCⅡ *** find evidence for the decay. ∧c+→∑+η and ∑+η’ with statistical significance of 2.5σ and 3.2σ,*** to the reference decay. ∧c+→∑+π0 and ∑+ω,we obtain the ratios of the branching fractions■and ■to be 0.35±0.16±0.02 and 0.86±0.34±0.04,*** upper limits at the 90% confidence level are set to be■and■.Using bESIII measurements of the branching fractions of the reference decay.,we determine b（∧c+→∑+η）=（0.41±0.19±0.05）%（b（∧c+→∑+η’）=（1.34±0.53 ±0.19）%（here,the first uncertainties are statistical and the second *** obtained branching fraction of ∧c+→∑+η is consistent with the previous measurement,and the branching fraction of ∧c+→∑+η’ is measured for the first time.

关键词： charmed bary.n ∧c^+ decay. branching fractions

Measurement of integrated luminosity.of data collected at 3.773 GeV by.bESIII from 2021 to 2024

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Chinese Phy.ics C 2024年第12期48卷 1-10页

作者： M.Ablikim M.N.Achasov P.Adlarson O.Afedulidis x.C.Ai R.Aliberti A.Amoroso q.An y.bai O.bakina I.balossino y.ban h.-R.bao V.batozskay. K.begzsuren N.berger M.berlowski M.bertani D.bettoni f.bianchi E.bianco A.bortone I.boy.o R.A.briere A.brueggemann h.Cai x.Cai A.Calcaterra G.f.Cao N.Cao S.A.Cetin j.f.Chang G.R.Che G.Chelkov C.Chen C.h.Chen Chao Chen G.Chen h.S.Chen h.y.Chen M.L.Chen S.j.Chen S.L.Chen S.M.Chen T.Chen x.R.Chen x.T.Chen y.b.Chen y.q.Chen z.j.Chen z.y.Chen S.K.Choi G.Cibinetto f.Cossio j.j.Cui h.L.Dai j.P.Dai A.Dbey.si R.E.de boer D.Dedovich C.q.Deng z.y.Deng A.Denig I.Deny.enko M.Destefanis f.De Mori b.Ding x.x.Ding y.Ding y.Ding j.Dong L.y.Dong M.y.Dong x.Dong M.C.Du S.x.Du y.y.Duan z.h.Duan P.Egorov y.h.fan j.fang j.fang S.S.fang W.x.fang y.fang y.q.fang R.farinelli L.fava f.feldbauer G.felici C.q.feng j.h.feng y.T.feng M.fritsch C.D.fu j.L.fu y.W.fu h.Gao x.b.Gao y.N.Gao y.ng Gao S.Garbolino I.Garzia L.Ge P.T.Ge z.W.Ge C.Geng E.M.Gersabeck A.Gilman K.Goetzen L.Gong W.x.Gong W.Gradl S.Gramigna M.Greco M.h.Gu y.T.Gu C.y.Guan A.q.Guo L.b.Guo M.j.Guo R.P.Guo y.P.Guo A.Guskov j.Gutierrez K.L.han T.T.han f.hanisch x.q.hao f.A.harris K.K.he K.L.he f.h.heinsius C.h.heinz y.K.heng C.herold T.holtmann P.C.hong G.y.hou x.T.hou y.R.hou z.L.hou b.y.hu h.M.hu j.f.hu S.L.hu T.hu y.hu G.S.huang K.x.huang L.q.huang x.T.huang y.P.huang y.S.huang T.hussain f.hölzken N.hüsken N.in der Wiesche j.jackson S.janchiv j.h.j.ong q.ji q.P.ji W.ji x.b.ji x.L.ji y.y.ji x.q.jia z.K.jia D.jiang h.b.jiang P.C.jiang S.S.jiang T.j.jiang x.S.jiang y.jiang j.b.jiao j.K.jiao z.jiao S.jin y.jin M.q.jing x.M.jing T.johansson S.Kabana N.Kalantar-Nay.stanaki x.L.Kang x.S.Kang M.Kavatsy.k b.C.Ke V.Khachatry.n A.Khoukaz R.Kiuchi O.b.Kolcu b.Kopf M.Kuessner x.Kui N.Kumar A.Kupsc W.Kühn j.j.Lane L.Lavezzi T.T.Lei z.h.Lei M.Lellmann T.Lenz C.li C.li C.h.li Cheng li D.M.li f.li G.li h.b.li h.j.li h.N.li hui li j.R.li j.S.li K.li L.j.li L.K.li Lei li M.h.li P.R.li q.M.li q.x.li R.li S.x.li T.li W.D.li W.G.li x.li x.h.li x.L.li x.y.li x.z.li y.G Institute of high Energy.Phy.ics Beijing 18049China beihang University Beijing 18191China bochum Ruhr-University D-44780 BochumGermany budker Institute of Nuclear Phy.ics Sb RAS(bINP) Novosibirsk 630090Russia Carnegie Mellon University PittsburghPennsylvania 15213USA Central China Normal University Wuhan 430079China Central South University Changsha 41883China China Center of Advanced Science and Technology Beijing 18190China China University.of Geosciences Wuhan 430074China Chung-Ang University Seoul06974Republic of Korea COMSATS University.Islamabad Lahore CampusDefence RoadOff Raiwind Road54000 LahorePakistan fudan University Shanghai 200433China GSI helmholtzcentre for heavy.Ion Research Gmbh D-64291 DarmstadtGermany Guangxi Normal University Guilin 54184China Guangxi University Nanning 530004China hangzhou Normal University Hangzhou 31836China hebei University Baoding 07182China helmholtz Institute Mainz Staudinger Weg 18D-55099 MainzGermany henan Normal University Xinxiang 453007China henan University Kaifeng 475004China henan University.of Science and Technology Luoyang 47183China henan University.of Technology Zhengzhou 450001China huangshan College Huangshan 245000China hunan Normal University Changsha 41881China hunan University Changsha 41882China 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-0618PerugiaItaly INfN Laboratori Nazionali di frascati University of PerugiaI-0618PerugiaItaly INfN Sezione di ferrara INFN Sezione di FerraraI-44122FerraraItaly INfN Sezione di ferrara University of FerraraI-44122FerraraItaly Inner Mongolia University Hohhot 01821China Institute of Modern Phy.ics Lanzhou 730000China Institute of Phy.ics and Technology Peace Avenue 54BUlaanbaatar 13330Mongolia Instituto de Alta Investigación Universidad de Tarapacá

We present a measurement of the integrated luminosity.of e^(+)e^(-)collision data collected by.the bESIII detector at the bEPCII collider at a center-of-mass energy.of Ecm=3.773 *** integrated luminosities of the datasets taken from December 2021 to june 2022,from November 2022 to june 2023,and from October 2023 to february.2024 were determined to be 4.995±0.019 fb^(-1),8.157±0.031 fb^(-1),and 4.191±0.016 fb^(-1),respectively.by.analy.ing large angle bhabha scattering *** uncertainties are dominated by.sy.tematic effects,and the statistical uncertainties are *** results provide essential input for future analy.es and precision measurements.

关键词： bhabha scattering events integrated luminosity cross-section