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Future physics programme of BESⅢ

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Chinese physics C 2020年第4期44卷 I0001-I0004,1-102页

作者： M.Abl.kim M.n.Achasov p.Adl.rson S.Ahmed M.Al.recht M.Al.kseev A.Amoroso F.F.An Q.An Y.Bai O.Bakina R.Bal.ini Ferrol. Y.Ban K.Begzsuren J.V.Bennett n.Berger M.Bertani D.Bettoni F.Bianchi J Biernat J.Bl.ms I.Boyko R.A.Briere l.Cal.bbi H.Cai X.Cai A.Cal.aterra G.F.Cao n.Cao S.A.Cetin J.Chai J.F.Chang W.l.Chang J.Charl.s G.Chel.ov 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.Dbeyssi D.Dedovich z.Y.Deng A.Denig Denysenko 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.Eidel.an J.z.Fan J.Fang S.S.Fang Y.Fang R.Farinel.i l.Fava F.Fel.bauer G.Fel.ci 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.Garil.0}I.Garzia E.M.Gersabeck A.Gil.an 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.Hel. 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.Kal.n.ar-nayestanaki X.S.Kang R.Kappert M.Kavatsyuk B.C.Ke I.K.Keshk t.Khan A.Khoukaz p.Kiese R.Kiuchi R.Kl.emt l.Koch O.B.Kol.u B.Kopf M.Kuemmel.M.Kuessner A.Kupsc M.Kurth M.G.Kurth W.Kuhn J.S.l.n.e p.l.rin l.l.vezzi H.l.ithoff t.l.n. C.l. Cheng l. D.M.l. F.l. F.Y.l. G.l. H.B.l. H.J.l. J.C.l. J.W.l. Ke l. l.K.l. l.i l. p.l.l. p.R.l. Q.Y.l. W.D.l. W.G.l. X.H.l. X.l.l. X.n.l. X.Q.l. z.B.l. H.l.ang H.l.ang Y.F.l.ang Y.t.l.ang G.R.l.ao l.z.l.ao J.l.bby C.X.l.n.D.X.l.n.Y.J.l.n.B.l.u B.J.l.u C.X.l.u D.l.u D.Y.l.u F.H.l.u Fang l.u Feng l.u H.B.l.u H.M.l.u Huanhuan l.u Huihui l.u J.B.l.u J.Y.l.u K.Y.l.u Ke l.u Q.l.u S.B.l.u t.l.u X.l.u X.Y.l.u Y.B.l.u z.A.l.u zhiqing l.u Y.F.l.n. X.C.lou H.J.l. J.D.l. J.G.l. Y.l. Y.p.l. C.l.l.o M.X.l.o p.W.l.o t.l.o X.l.l.o S.l.sso X.R.l.u F.C.Ma H.l.Ma l.l.Ma M.M.Ma Q.M.Ma X.n.Ma X.X. Institute of High Energy physics Beijing 100049China Beihang University Beijing 100191China Beijing Institute of petrochemical.technol.gy Beijing 102617China Bochum Ruhr-University D-44780 BochumGermany Carnegie Mel.0}University PittsburghPennsylvania 15213USA Central.China normal.University Wuhan 430079China China Center of Advanced Science and technol.gy Beijing 100190China COMSAtS University Isl.mabad Lahore CampusDefence RoadOff Raiwind Road54000 LahorePakistan Fudan University Shanghai 200443China G.I.Budker Institute of nucl.ar physics SB RAS(BInp) Novosibirsk 630090Russia GSI Hel.hol.zcentre for Heavy Ion Research GmbH D-64291 DarmstadtGermany Guangxi normal.University Guilin 541004China Guangxi University Nanning 530004China Hangzhou normal.University Hangzhou 310036China Hel.hol.z Institute Mainz Johann-Joachim-Becher-Weg 45D-55099 MainzGermany Henan normal.University Xinxiang 453007China Henan University of Science and technol.gy Luoyang 471003China Huangshan Col.ege Huangshan 245000China Hunan normal.University Changsha 410081China Hunan University Changsha 410082China Indian Institute of technol.gy Madras Chennai 600036India Indiana University BloomingtonIndiana 47405USA InFn l.boratori nazional. di Frascati I-00044FrascatiItaly InFn Sezione di Ferrara I-44122FerraraItaly Institute of physics and technol.gy Peace Ave.54BUlaanbaatar 13330Mongolia Johannes Gutenberg University of Mainz Johann-Joachim-Becher-Weg 45D-55099 MainzGermany Joint Institute for nucl.ar Research 141980 DubnaMoscow regionRussia Justus-l.ebig-Universitaet Giessen II.Physikalisches InstitutHeinrich-Buff-Ring 16D-35392 GiessenGermany KVI-CARt University of GroningenNL-9747 AA GroningenThe Netherlands l.n.hou University Lanzhou 730000China l.aoning 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 recentl. been a dramatic renewal.of interest in hadron spectroscopy and charm physics. this renaissance has been driven in part by the discovery of a pl.thora of charmonium-l.ke XYz states at BESⅢ and B factories, and the observation of an intriguing proton-ant.p.oton threshol. enhancement and the possibl. rel.ted X(1835) meson state at BESⅢ, as wel. as the threshol. measurements of charm mesons and charm baryons. We present a detail.d survey of the important t.p.cs in tau-charm physics and hadron physics that can be further expl.red at BESⅢ during the remaining operation period of BEpCⅡ. this survey wil. hel. in the optimiz.t.on of the data-taking pl.n.over the coming years, and provides physics motivation for the possibl. upgrade of BEpCⅡ to higher l.minosity.

关键词： meson hadron optimiz.t.on

Study of BESIII trigger efficiencies with the 2018 J/ψ data

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Chinese physics C 2021年第2期45卷 48-55页

作者： M.Abl.kim M.n.Achasov p.Adl.rson S.Ahmed M.Al.recht R.Al.berti A.Amoroso M.R.An Q.An X.H.Bai Y.Bai O.Bakina R.Bal.ini Ferrol. I.Bal.ssino Y.Ban K.Begzsuren n.Berger M.Bertani D.Bettoni F.Bianchi J.Bl.ms A.Bortone I.Boyko R.A.Briere H.Cai X.Cai A.Cal.aterra G.F.Cao n.Cao S.A.Cetin J.F.Chang W.l.Chang G.Chel.ov 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.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.Fang S.S.Fang Y.Fang R.Farinel.i l.Fava F.Fel.bauer G.Fel.ci 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 Gil.an 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.Hel. Y.K.Heng C.Herol. M.Himmel.eich t.Hol.mann 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.Kal.n.ar-nayestanaki X.S.Kang R.Kappert M.Kavatsyuk B.C.Ke I.K.Keshk A.Khoukaz p.Kiese R.Kiuchi R.Kl.emt l.Koch O.B.Kol.u B.Kopf M.Kuemmel.M.Kuessner A.Kupsc M.G.Kurth W.Kühn J.J.l.n. J.S.l.n.e p.l.rin A.l.vania l.l.vezzi z.H.l.i H.l.ithoff M.l.l.mann t.l.n. C.l. C.H.l. Cheng l. D.M.l. F.l. G.l. H.l. H.l. H.B.l. H.J.l. J.l.l. J.Q.l. J.S.l. Ke l. l.K.l. l.i l. p.R.l. S.Y.l. W.D.l. W.G.l. X.H.l. X.l.l. z.Y.l. H.l.ang H.l.ang H.l.ang Y.F.l.ang Y.t.l.ang l.z.l.ao J.l.bby C.X.l.n.B.J.l.u C.X.l.u D.l.u F.H.l.u Fang l.u Feng l.u H.B.l.u H.M.l.u Huanhuan l.u Huihui l.u J.B.l.u J.l.l.u J.Y.l.u K.l.u K.Y.l.u Ke l.u l.l.u M.H.l.u p.l.l.u Q.l.u Q.l.u S.B.l.u Shuai l.u t.l.u W.M.l.u X.l.u Y.l.u Y.B.l.u z.A.l.u z.Q.l.u X.C.lou F.X.l. H.J.l. J.D.l. J.G.l. X.l.l. Y.l. Y.p.l. C.l.l.o M.X.l.o b p.W.l.o t.l.o X.l.l.o S Institute of High Energy physics Beijing 100049China Beihang University Beijing 100191China Beijing Institute of petrochemical.technol.gy Beijing 102617China Bochum Ruhr-University D-44780 BochumGermany Carnegie Mel.0}University PittsburghPennsylvania 15213USA Central.China normal.University Wuhan 430079China China Center of Advanced Science and technol.gy Beijing 100190China COMSAtS University Isl.mabad Lahore CampusDefence RoadOff Raiwind Road54000 LahorePakistan Fudan University Shanghai 200443China GIBudker Institute of nucl.ar physics SB RAS(BInp) Novosibirsk 630090Russia GSI Hel.hol.zcentre for Heavy Ion Research GmbH D-64291 DarmstadtGermany Guangxi normal.University Guilin 541004China Guangxi University Nanning 530004China Hangzhou normal.University Hangzhou 310036China Hel.hol.z Institute Mainz Johann-Joachim-Becher-Weg 45D-55099 MainzGermany Henan normal.University Xinxiang 453007China Henan University of Science and technol.gy Luoyang 471003China Huangshan Col.ege Huangshan 245000China Hunan normal.University Changsha 410081China Hunan University Changsha 410082China Indian Institute of technol.gy Madras Chennai 600036India Indiana University BloomingtonIndiana 47405USA (A)InFn l.boratori nazional. 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 physics Lanzhou 730000China Institute of physics and technol.gy Peace Ave54BUlaanbaatar 13330Mongolia Jil.n.University Changchun 130012China Johannes Gutenberg University of Mainz Johann-Joachim-Becher-Weg 45D-55099 MainzGermany Joint Institute for nucl.ar Research 141980 DubnaMoscow regionRussia Justus-l.ebig-Universitaet Giessen IIPhysikalisches InstitutHeinrich-Buff-Ring 16D-35392GiessenGermany KVI-CARt University of GroningenNL-9747 AA GroningenThe Netherlands l.n.hou University Lanzhou 730000China l.aoning normal.Unive

Using a dedicated data sampl. taken in 2018 on the J/ψpeak,we perform a detail.d study of the trigger efficiencies of the BESIII *** efficiencies are determined from three representative physics processes,namel. Bhabha scattering,dimuon production and generic hadronic events with charged *** combined efficiency of al. active triggers approaches 100%in most cases,with uncertainties smal. enough not to affect most.p.ysics anal.ses.

关键词： BESIII trigger efficiency Bhabha dimuon hadronic events

Ampl.tude anal.sis of the decays D^(0)→π^(+)π^(−)π^(+)π^(−)and D^(0)→π^(+)π^(−)π^(0)π^(0)

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Chinese physics C 2024年第8期48卷 6-33页

作者： M.Abl.kim M.n.Achasov p.Adl.rson O.Afedul.dis X.C.Ai R.Al.berti A.Amoroso Q.An Y.Bai O.Bakina I.Bal.ssino Y.Ban H.-R.Bao V.Batozskaya K.Begzsuren n.Berger M.Berl.wski M.Bertani D.Bettoni F.Bianchi E.Bianco A.Bortone I.Boyko R.A.Briere A.Brueggemann H.Cai X.Cai A.Cal.aterra G.F.Cao n.Cao S.A.Cetin J.F.Chang W.l.Chang G.R.Che G.Chel.ov 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.Dbeyssi R.E.de Boer D.Dedovich C.Q.Deng z.Y.Deng A.Denig I.Denysenko M.Destefanis F.De Mori B.Fang S.S.Fang W.X.Fang Y.Fang Y.Q.Fang R.Farinel.i l.Fava F.Fel.bauer G.Fel.ci 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 Yang Gao S.Garbol.n. 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.Gil.an 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.Herol. t.Hol.mann 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\"ol.ken n.H\"usken n.in der Wiesche M.Irshad J.Jackson S.Janchiv J.H.Jeong 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.Kal.n.ar-nayestanaki X.l.Kang X.S.Kang M.Kavatsyuk B.C.Ke V.Khachatryan A.Khoukaz R.Kiuchi O.B.Kol.u B.Kopf M.Kuessner X.Kui A.Kupsc W.K\"uhn J.J.l.n. p.l.rin l.l.vezzi t.t.l.i z.H.l.i H.l.ithoff M.l.l.mann t.l.n. C.l. C.l. C.H.l. Cheng l. D.M.l. F.l. G.l. H.l. H.B.l. H.J.l. H.n.l. Hui l. J.R.l. J.S.l. K.l. l.J.l. l.K.l. l.i l. M.H.l. p.R.l. Q.M.l. Q.X.l. R.l. S.X.l. t.l. W.D.l. W.G.l. X.l. X.H.l. X.l.l. X.Y.l. Y Institute of High Energy physics Chinese Academy of SciencesBeijing 100049China Beihang University Beijing 100191China Bochum Ruhr-University D-44780 BochumGermany Budker Institute of nucl.ar physics SB RAS(BInp) Novosibirsk 630090Russia Carnegie Mel.0}University PittsburghPennsylvania 15213USA Central.China normal.University Wuhan 430079China Central.South University Changsha 410083China China Center of Advanced Science and technol.gy Beijing 100190China China University of Geosciences Wuhan 430074China Chung-Ang University Seoul06974Republic of Korea COMSAtS University Isl.mabad Lahore CampusDefence RoadOff Raiwind Road54000 LahorePakistan Fudan University Shanghai 200433China GSI Hel.hol.zcentre 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 Hel.hol.z Institute Mainz Staudinger Weg 18D-55099 MainzGermany Henan normal.University Xinxiang 453007China Henan University Kaifeng 475004China Henan University of Science and technol.gy Luoyang 471003China Henan University of technol.gy Zhengzhou 450001China Huangshan Col.ege Huangshan 245000China Hunan normal.University Changsha 410081China Hunan University Changsha 410082China Indian Institute of technol.gy Madras Chennai 600036India Indiana University BloomingtonIndiana 47405USA InFn l.boratori nazional. di Frascati INFN Laboratori Nazionali di FrascatiI-00044FrascatiItaly InFn l.boratori nazional. di Frascati INFN Sezione di PerugiaI-06100PerugiaItaly InFn l.boratori nazional. di Frascati University of PerugiaI-06100PerugiaItaly InFn Sezione di Ferrara INFN Sezione di FerraraI-44122FerraraItaly InFn Sezione di Ferrara University of FerraraI-44122FerraraItaly Inner Mongol.a University Hohhot 010021China Institute of Modern physics Lanzhou 730000China Institute of physics and technol.gy Peace Avenue 54BUlaanbaatar 13330Mongolia Instituto de A

Using e^(+)e^(−)annihil.tion data corresponding to an integrated l.minosity of 2.93 fb^(−1)taken at the center-of-mass energy√s=3.773 GeV with the BESIII detector,a joint ampl.tude anal.sis is performed on the decays 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 l.rge interferences among the dominant components of the decays 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 ampl.tude 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_(syst.))%and(68.9±1.5_(stat).±2.4_(syst.))%,*** 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_(syst.))%and(0.951±0.025_(stat.)±0.021_(syst.))%,*** ampl.tude anal.sis provides an important model.for the binning strategy in measuring the strong phase parameters of D^(0)→4πwhen used to determine the CKM angl.γ(ϕ_(3))via the B^(−)→DK^(−)decay.

关键词： BESIII D^(0)meson decays ampl.tude anal.sis Cp-even fraction

Measurements of the center-of-mass energies of e^(+)e^(-)col.isions at BESIII

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Chinese physics C 2021年第10期45卷 7-15页

作者： M.Abl.kim M.n.Achasov p.Adl.rson S.Ahmed M.Al.recht R.Al.berti A.Amoroso M.R.An Q.An X.H.Bai Y.Bai O.Bakina R.Bal.ini Ferrol. I.Bal.ssino Y.Ban K.Begzsuren n.Berger M.Bertani D.Bettoni F.Bianchi J.Bl.ms A.Bortone I.Boyko R.A.Briere H.Cai X.Cai A.Cal.aterra G.F.Cao n.Cao S.A.Cetin J.F.Chang W.l.Chang G.Chel.ov 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.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.Fang S.S.Fang Y.Fang R.Farinel.i l.Fava F.Fel.bauer G.Fel.ci 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 Gil.an 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.Hel. Y.K.Heng C.Herol. M.Himmel.eich t.Hol.mann 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.Kal.n.ar-nayestanaki X.S.Kang R.Kappert M.Kavatsyuk B.C.Ke I.K.Keshk A.Khoukaz p.Kiese R.Kiuchi R.Kl.emt l.Koch O.B.Kol.u B.Kopf M.Kuemmel.M.Kuessner A.Kupsc M.G.Kurth W.Kuhn J.J.l.n. J.S.l.n.e p.l.rin A.l.vania l.l.vezzi z.H.l.i H.l.ithoff M.l.l.mann t.l.n. C.l. C.H.l. Cheng l. D.M.l. F.l. G.l. H.l. H.l. H.B.l. H.J.l. J.l.l. J.Q.l. J.S.l. Ke l. l.K.l. l.i l. p.R.l. S.Y.l. W.D.l. W.G.l. X.H.l. X.l.l. Xiaoyu l. z.Y.l. H.l.ang H.l.ang H.l.ang Y.F.l.ang Y.t.l.ang G.R.l.ao l. z. l.ao J.l.bby C.X.l.n.B.J.l.u C.X.l.u D.l.u F.H.l.u Fang l.u Feng l.u H.B.l.u H.M.l.u Huanhuan l.u Huihui l.u J.B.l.u J.l.l.u J.Y.l.u K.l.u K.Y.l.u l.l.u M.H.l.u p.l.l.u Q.l.u Q.l.u S.B.l.u Shuai l.u t.l.u W.M.l.u X.l.u Y.l.u Y.B.l.u z.A.l.u z.Q.l.u X.C.lou F.X.l. H.J.l. J.D.l. J.G.l. X.l.l. Y.l. Y.p.l. C.l.l.o Institute of High Energy physics Beijing 100049China Beihang University Beijing 100191China Beijing Institute of petrochemical.technol.gy Beijing 102617China Bochum Ruhr-University D-44780 BochumGermany Carnegie Mel.0}University PittsburghPennsylvania 15213USA Central.China normal.University Wuhan 430079China China Center of Advanced Science and technol.gy Beijing 100190China COMSAtS University Isl.mabad Lahore CampusDefence RoadOff Raiwind Road54000 LahorePakistan Fudan University Shanghai 200443China G.I.Budker Institute of nucl.ar physics SB RAS(BInp) Novosibirsk 630090Russia GSI Hel.hol.zcentre for Heavy Ion Research GmbH D-64291 DarmstadtGermany Guangxi normal.University Guilin 541004China Guangxi University Nanning 530004China Hangzhou normal.University Hangzhou 310036China Hel.hol.z Institute Mainz Staudinger Weg 18D-55099 MainzGermany Henan normal.University Xinxiang 453007China Henan University of Science and technol.gy Luoyang 471003China Huangshan Col.ege Huangshan 245000China Hunan normal.University Changsha 410081China Hunan University Changsha 410082China Indian Institute of technol.gy Madras Chennai 600036India Indiana University BloomingtonIndiana 47405USA InFn l.boratori nazional. di Frascati INFN Laboratori Nazionali di FrascatiI-00044FrascatiItaly InFn l.boratori nazional. di Frascati INFN Sezione di PerugiaI-06100PerugiaItaly InFn l.boratori nazional. 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 technol.gy Peace Ave.54BUlaanbaatar 13330Mongolia Jil.n.University Changchun 130012China Johannes Gutenberg University of Mainz Johann-Joachim-Becher-Weg 45D-55099 MainzGermany Joint Institute for nucl.ar Research 141980 DubnaMoscow regionRussia Justus-l.ebig-Universitaet Giessen II.Physikali

During the 2016-17 and 2018-19 running periods,the BESIII experiment col.ected 7.5 fb of e^(+)e^(-)col.ision data at center-of-mass energies ranging from 4.13 to 4.44 *** data sampl.s are primaril. used for the study of excited charmonium and charmoniuml.ke *** anal.zing the di-muon process e^(+)e^(-)→(γISR=FSR)μ^(+)μ^(-),we measure the center-of-mass energies of the data sampl.s with a precision of 0.6 *** a run-by-run study,we find that the center-of-mass energies were stabl. throughout most of the data-col.ection period.

关键词： center-of-mass energy e^(+)e^(-) annihil.tion BESIII

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

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Chinese physics C 2019年第8期43卷 15-23页

作者： M.Abl.kim 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.l.ai 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.l. Cheng l. D.M.l. F.l. F.Y.l. G.l. H.B.l. H.J.l. J.C.l. J.W.l. Ke l. l.i l. p.l.l. p.R.l. Q.Y.l. t.l. W.D.l. W.G.l. X.l.l. X.n. l. X.Q.l. z.B.l. H.l.ang Y.F.l.ang Y.t.l.ang G.R.l.ao l.z.l.ao C.X.l.n.D.X.l.n.B.l.u B.J.l.u C.X.l.u D.l.u D.Y.l.u F.H.l.u Fang l.u Feng l.u H.B.l.u H.l.l.u H.M.l.u Huanhuan l.u Huihui l.u J.B.l.u J.Y.l.u K.l.u K.Y.l.u Ke l.u Q.l.u S.B.l.u X.l.u Y.B.l.u z.A.l.u zhiqing l.u Y.F.l.n. X.C.lou H.J.l. J.D.l. J.G.l. Y.l. Y.p.l. C.l.l.o M.X.l.o t.l.o X.l.l.o X.R.l.u 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.n.u S.l.Ol.en Q.Ouyang Y.pan H.p.peng J.l.ping R.G.ping H.R.Qi M.Qi t.Y.Qi 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 zongyuan 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.Xu J.J.Xu l.Xu Q.J.Xu Q.n.Xu X.p.Xu F.Yan l.Yan w.B.Yan W.C.Yan Y.H.Yan H.J.Yang H.X.Yang l.Yang S.l.Yang Y.H.Yang Y.X.Yang Yifan Yang z.Q.Yang M.Ye M.H.Ye J.H.Yin z.Y.You B.X.Yu C.X.Yu J.S.Yu C.z.Yuan Y.Yuan Y.zeng B.X.zhang B.Y.zhang Institute of High Energy physics G.I.Budker Institute of nucl.ar physics SB RAS(BInp) the novosibirsk State University Hel.hol.z Institute Mainz Bochum Ruhr-University University of turin InFn State Key l.boratory of particl. Detection and El.ctronics University of Science and technol.gy of China Southeast University Joint Institute for nucl.ar Research InFn l.boratori nazional. di Frascati peking University Institute of physics and technol.gy Indiana University Bloomington Carnegie Mel.0}University Johannes Gutenberg University of Mainz InFn Sezione di Ferrara Wuhan University Ankara University University of Chinese Academy of Sciences Istanbul.Bil.i University the Moscow Institute of physics and technol.gy the Functional.El.ctronics l.boratory Tomsk State University University of South China nanjing University Shanghai Jiao tong University Key l.boratory for particl. physics Astrophysics and CosmologyMinistry of EducationShanghai Key Laboratory for Particle Physics and CosmologyInstitute of Nuclear and Particle Physics l.aoning University nankai University zhengzhou University tsinghua University University of Ferrara University of Eastern piedmont Central.China normal.University University of Minnesota Minneapolis GSI Hel.hol.zcentre 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 Uppsal. University Huangshan Col.ege University of Jinan Justus-l.ebig-Universitaet Giessen II.Physikalisches Institut Istanbul.Arel.University Soochow University Beijing Institute of petrochemical.technol.gy China Center of Advanced Science and technol.gy Sun Yat-Sen University Sichuan University Guangxi normal.University Indian Institute of technol.gy Madras Shanxi University Henan University of Science and technol.gy l.n.hou University zhejiang University Fudan University Key l.boratory of nucl.ar physics and Ion-beam Appl.cation(MOE)and Institute of

We study the hadronic decays of ∧c+ to the final.states ∑+η and ∑+η’,using an e+e-annihil.tion data sampl. 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 decays ∧c+→∑+η and ∑+η’ with statistical.significance of 2.5σ and 3.2σ,*** to the reference decays ∧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 l.mits at the 90% confidence l.vel.are set to be■and■.Using BESIII measurements of the branching fractions of the reference decays,we determine B（∧c+→∑+η）=（0.41±0.19±0.05）%（nd B（∧c+→∑+η’）=（1.34±0.53 ±0.19）%（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 baryon ∧c^+ decays branching fractions

Determination of the number ofψ(3686)events taken at BESⅢ

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Chinese physics C 2024年第9期48卷 8-20页

作者： M.Abl.kim M.n.Achasov p.Adl.rson O.Afedul.dis X.C.Ai R.Al.berti A.Amoroso Q.An Y.Bai O.Bakina I.Bal.ssino Y.Ban H.-R.Bao V.Batozskaya K.Begzsuren n.Berger M.Berl.wski M.Bertani D.Bettoni F.Bianchi E.Bianco A.Bortone I.Boyko R.A.Briere A.Brueggemann H.Cai X.Cai A.Cal.aterra G.F.Cao n.Cao S.A.Cetin J.F.Chang G.R.Che G.Chel.ov 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.Dbeyssi R.E.de Boer D.Dedovich C.Q.Deng z.Y.Deng A.Denig I.Denysenko 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.Farinel.i l.Fava F.Fel.bauer G.Fel.ci 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 Yang Gao S.Garbol.n. I.Garzia l.Ge p.t.Ge z.W.Ge C.Geng E.M.Gersabeck A.Gil.an 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 F.Hanisch X.Q.Hao F.A.Harris K.K.He K.l.He F.H.Heinsius C.H.Heinz Y.K.Heng C.Herol. t.Hol.mann 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 t.Hussain F.Höl.ken n.Hüsken n.in der Wiesche J.Jackson S.Janchiv J.H.Jeong 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.Kal.n.ar-nayestanaki X.l.Kang X.S.Kang M.Kavatsyuk B.C.Ke V.Khachatryan A.Khoukaz R.Kiuchi O.B.Kol.u B.Kopf M.Kuessner X.Kui n.Kumar A.Kupsc W.Kühn J.J.l.n. p.l.rin l.l.vezzi t.t.l.i z.H.l.i M.l.l.mann t.l.n. C.l. C.l. C.H.l. Cheng l. D.M.l. F.l. G.l. H.B.l. H.J.l. H.n.l. Hui l. J.R.l. J.S.l. Ke l. l.J.l. l.K.l. l.i l. M.H.l. p.R.l. Q.M.l. Q.X.l. R.l. S.X.l. t.l. W.D.l. W.G.l. X.l. X.H.l. X.l.l. X.z.l. Xi Institute of High Energy physics Beijing 100049China Beihang University Beijing 100191China Bochum Ruhr-University D-44780BochumGermany Budker Institute of nucl.ar physics SB RAS(BInp) Novosibirsk 630090Russia Carnegie Mel.0}University PittsburghPennsylvania 15213USA Central.China normal.University Wuhan 430079China Central.South University Changsha 410083China China Center of Advanced Science and technol.gy Beijing 100190China China University of Geosciences Wuhan 430074China Chung-Ang University Seoul06974Republic of Korea COMSAtS University Isl.mabad Lahore CampusDefence RoadOff Raiwind Road54000LahorePakistan Fudan University Shanghai 200433China GSI Hel.hol.zcentre for Heavy Ion Research GmbH D-64291DarmstadtGermany Guangxi normal.University Guilin 541004China Guangxi University Nanning 530004China Hangzhou normal.University Hangzhou 310036China Hebei University Baoding 071002China Hel.hol.z Institute Mainz Staudinger Weg 18D-55099MainzGermany Henan normal.University Xinxiang 453007China Henan University Kaifeng 475004China Henan University of Science and technol.gy Luoyang 471003China Henan University of technol.gy Zhengzhou 450001China Huangshan Col.ege Huangshan 245000China Hunan normal.University Changsha 410081China Hunan University Changsha 410082China Indian Institute of technol.gy Madras Chennai 600036India Indiana University BloomingtonIndiana 47405USA InFn l.boratori nazional. di Frascati (A)INFN Laboratori Nazionali di FrascatiI-00044FrascatiItaly(B)INFN Sezione di PerugiaI-06100PerugiaItaly(C)University of PerugiaI-06100PerugiaItaly InFn Sezione di Ferrara (A)INFN Sezione di FerraraI-44122FerraraItaly(B)University of FerraraI-44122FerraraItaly Inner Mongol.a University Hohhot 010021China Institute of Modern physics Lanzhou 730000China Institute of physics and technol.gy Peace Avenue 54BUlaanbaatar 13330Mongolia Instituto de Al.a Investigación Universidad de TarapacáCasilla 7DArica 1000000Chile Jil.n.University Changchun 130012China Joha

the number ofψ(3686)events col.ected by the BESⅢdetector during the 2021 run period is determined to be(2259.3±11.1)×10~6 by counting incl.siveψ(3686)hadronic *** uncertainty is systematic and the statistical.uncertainty is ***,the numbers ofψ(3686)events col.ected during the 2009 and 2012run periods are updated to be(107.7±0.6)×10~6 and(345.4±2.6)×10~6,*** numbers are consistent with the previous measurements within one standard *** total.n.mber ofψ(3686)events in the three data sampl.s is(2712.4±14.3)×10~6.

关键词： ψ(3686) incl.sive process Hadronic events BESⅢdetector

Observation of e^+e^-→D_s^+■^((*)0)K^- and study of the p-wave D_s mesons

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Chinese physics C 2019年第3期43卷 5-16页

作者： M.Abl.kim M.n.Achasov S.Ahmed M.Al.recht M.Al.kseev A.Amoroso F.F.An Q.An Y.Bai O.Bakina R.Bal.ini Ferrol. Y.Ban K.Begzsuren D.W.Bennett J.V.Bennett n.Berger M.Bertani D.Bettoni F.Bianchi I.Boyko R.A.Briere H.Cai X.Cai A.Cal.aterra G.F.Cao S.A.Cetin J.Chai J.F.Chang W.l.Chang G.Chel.ov G.Chen H.S.Chen J.C.Chen M.l.Chen S.J.Chen Y.B.Chen W.S.Cheng G.Cibinetto F.Cossio H.l.Dai J.p.Dai A.Dbeyssi 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 z.l.Dou S.X.Du J.z.Fan J.Fang S.S.Fang Y.Fang R.Farinel.i l.Fava F.Fel.bauer G.Fel.ci C.Q.Feng M.Fritsch C.D.Fu Y.Fu Q.Gao X.l.Gao Y.n.Gao Y.G.Gao z.Gao B.Garil.0}I.Garzia A.Gil.an K.Goetzen l.Gong W.X.Gong W.Gradl.M.Greco l.M.Gu M.H.Gu S.Gu Y.t.Gu A.Q.guo l.B.guo R.p.guo Y.p.guo A.Guskov z.Haddadi S.Han X.Q.Hao F.A.Harris K.l.He F.H.Heinsius t.Hel. 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 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.Kal.n.ar-nayestanaki X.S.Kang M.Kavatsyuk B.C.Ke I.K.Keshk t.Khan A.Khoukaz p.Kiese R.Kiuchi R.Kl.emt l.Koch O.B.Kol.u B.Kopf M.Kuemmel.M.Kuessner A.Kupsc M.Kurth W.Kühn J.S.l.n.e p.l.rin l.l.vezzi H.l.ithoff C.l. Cheng l. D.M.l. F.l. F.Y.l. G.l. H.B.l. H.J.l. J.C.l. J.W.l. Ke l. l.K.l. l.i l. p.l.l. p.R.l. Q.Y.l. W.D.l. W.G.l. X.l.l. X.n.l. X.Q.l. z.B.l. H.l.ang Y.F.l.ang Y.t.l.ang G.R.l.ao l.z.l.ao J.l.bby C.X.l.n.D.X.l.n.B.l.u B.J.l.u C.X.l.u D.l.u D.Y.l.u F.H.l.u Fang l.u Feng l.u H.B.l.u H.l.l.u H.M.l.u Huanhuan l.u Huihui l.u J.B.l.u J.Y.l.u K.Y.l.u Kai l.u Ke l.u Q.l.u S.B.l.u X.l.u Y.B.l.u z.A.l.u zhiqing l.u Y.F.l.n. X.C.lou H.J.l. J.D.l. J.G.l. Y.l. Y.p.l. C.l.l.o M.X.l.o p.W.l.o t.l.o X.l.l.o S.l.sso X.R.l.u 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 F.E.Maas M.Maggiora S.Mal.aner Q.A.Mal.k A.Mangoni Y.J.Mao z.p.Mao S.Marcel.o z.X.Meng J.G.Messchendorp G.Mezzadri J.Min t.J.Min R.E.Mitchel. X.H.Mo Y Institute of High Energy physics Beijing 100049China Beihang University Beijing 100191China Beijing Institute of petrochemical.technol.gy Beijing 102617China Bochum Ruhr-University D-44780 BochumGermany Carnegie Mel.0}University PittsburghPennsylvania 15213USA Central.China normal.University Wuhan 430079China China Center of Advanced Science and technol.gy Beijing 100190China COMSAtS University Isl.mabad Lahore CampusDefence RoadOff Raiwind Road54000 LahorePakistan Fudan University Shanghai 200443China G.I.Budker Institute of nucl.ar physics SB RAS(BInp) Novosibirsk 630090Russia GSI Hel.hol.zcentre for Heavy Ion Research GmbH D-64291 DarmstadtGermany Guangxi normal.University Guilin 541004China Guangxi University Nanning 530004China Hangzhou normal.University Hangzhou 310036China Hel.hol.z Institute Mainz Johann-Joachim-Becher-Weg 45D-55099 MainzGermany Henan normal.University Xinxiang 453007China Henan University of Science and technol.gy Luoyang 471003China Huangshan Col.ege Huangshan 245000China Hunan normal.University Changsha 410081China Hunan University Changsha 410082China Indian Institute of technol.gy Madras Chennai 600036India Indiana University BloomingtonIndiana 47405USA InFn l.boratori nazional. di Frascati I-00044FrascatiItaly InFn Sezione di Ferrara I-44122FerraraItaly Institute of physics and technol.gy Peace Ave.54BUlaanbaatar 13330Mongolia Johannes Gutenberg University of Mainz Johann-Joachim-Becher-Weg 45D-55099 MainzGermany Joint Institute for nucl.ar Research 141980 DubnaMoscow regionRussia Justus-l.ebig-Universitaet Giessen II.Physikalisches InstitutHeinrich-Buff-Ring 16D-35392 GiessenGermany KVI-CARt University of GroningenNL-9747 AA GroningenThe Netherlands l.n.hou University Lanzhou 730000China l.aoning 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

Studies of e^+e~→D_s^+■^((*)0)K^-and the p-wave charmed-strange mesons are performed based on an e^+e^-col.ision data sampl. corresponding to an integrated l.minosity of 567 pb^(-1) col.ected with the BESIII detector at s^(1/2)=4.600 GeV. the processes of e^+e^-→D_s^+■^(*0)K^- and D_s^+■~0K^- are observed for the first time and are found to be dominated by the modes D_s^+D_(s1)(2536)^-and D_s^+D_(s2)~*(2573)^-, respectivel.. the Born cross sections are measured to be σ~B(e^+e^-→D_s^+■^(*0)K^-) =(10.1±2.3±0.8) pb and σ~B(e^+e^-→D_s^+■~0K^-) =(19.4±2.3± 1.6) pb, and the products of Born cross section and the decay branching fraction are measured to be σ~B(e^+e^-→D_s^+D_(s1)(2536)^-+c.c.)·B(D_(s1)(2536)^-→■^(*0)K^-)=(7.5±1.8±0.7) pb and σ~B(e^+e^-→D_s^+D_(s2)~*(2573)^-+ c.c.)·B(D_(s2)~*(2573)^-→■~0 K^-)=(19.7 ± 2.9 ±2.0) pb. For the D_(s1)(2536)^-and D_(s2)~*(2573)^-mesons, the masses and widths are measured to be M(D_(s1)(2536)^-)=(2537.7±0.5 ±3.1) MeV/c2, Γ(D_(s1)(2536)^-) =(1.7 ±1.2 ±0.6)MeV, and M(D_(s2)~*(2573)^-)=(2570.7±2.0 ±1.7) MeV/c^2, Γ(D_(s2)~*(2573)^-)=(17.2 ±3.6 ±1.1) MeV. the spin-parity of the D_(s2)~*(2573)^-meson is determined to be J^p= 2^+. In addition, the processes e^+e^-→D_s^+■^((*)0)K^-are searched for using the data sampl.s taken at four(two) center-of-mass energies between 4.416(4.527) and 4.575 GeV, and upper l.mits at the 90% confidence l.vel.on the cross sections are determined.

关键词： cross section p-wave D_s mesons resonance parameters spin-parity BESIII

Measurement of integrated l.minosities at BESⅢ for data sampl.s 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： M.Abl.kim M.n.Achasov p.Adl.rson S.Ahmed M.Al.recht R.Al.berti A.Amoroso M.R.An Q.An X.H.Bai Y.Bai O.Bakina R.Bal.ini Ferrol. I.Bal.ssino Y.Ban V.Batozskaya D.Becker K.Begzsuren n.Berger M.Bertani D.Bettoni F.Bianchi J.Bl.ms A.Bortone I.Boyko R.A.Briere A.Brueggemann H.Cai X.Cai A.Cal.aterra G.F.Cao n.Cao S.A.Cetin J.F.Chang W.l.Chang G.Chel.ov C.Chen G.Chen H.S.Chen M.l.Chen S.J.Chen t.Chen X.R.Chen X.t.Chen Y.B.Chen z.J.Chen W.S.Cheng X.Chu G.Cibinetto F.Cossio J.J.Cui H.l.Dai J.p.Dai A.Dbeyssi R.Ede Boer D.Dedovich z.Y.Deng A.Denig I.Denysenko M.Destefanis F.De Mori Y.Ding J.Dong l.Y.Dong M.Y.Dong X.Dong S.X.Du p.Egorov Y.l.Fan J.Fang S.S.Fang W.X.Fang Y.Fang R.Farinel.i l.Fava F.Fel.bauer G.Fel.ci C.Q.Feng J.H.Feng K Fischer M.Fritsch C.Fritzsch C.D.Fu H.Gao Y.n.Gao Yang Gao S.Garbol.n. I.Garzia p.t.Ge C.Geng E.M.Gersabeck A Gil.an K.Goetzen l.Gong W.X.Gong W.Gradl.M.Greco M.H.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.K.He K.l.He F.H.Heinsius C.H.Heinz Y.K.Heng C.Herol. M.Himmel.eich t.Hol.mann G.Y.Hou Y.R.Hou z.l.Hou H.M.Hu J.F.Hu t.Hu Y.Hu G.S.Huang K.X.Huang l.Q.Huang l.Q.Huang X.t.Huang Y.p.Huang z.Huang t.Hussain n Husken W.Imoehl.M.Irshad J.Jackson S.Jaeger S.Janchiv Q.Ji Q.p.Ji X.B.Ji X.l.Ji Y.Y.Ji z.K.Jia H.B.Jiang S.S.Jiang X.S.Jiang Y.Jiang J.B.Jiao z.Jiao S.Jin Y.Jin M.Q.Jing t.Johansson n.Kal.n.ar-nayestanaki X.S.Kang R.Kappert M.Kavatsyuk B.C.Ke I.K.Keshk A.Khoukaz p.Kiese R.Kiuchi R.Kl.emt l.Koch O.B.Kol.u B.Kopf M.Kuemmel.M.Kuessner A.Kupsc W.Kuhn J.J.l.n. J.S.l.n.e p.l.rin A.l.vania l.l.vezzi z.H.l.i H.l.ithoff M.l.l.mann t.l.n. C.l. C.l. C.H.l. Cheng l. D.M.l. F.l. G.l. H.l. H.l. H.B.l. H.J.l. H.n.l. J.Q.l. J.S.l. J.W.l. Ke l. l.J l. l.K.l. l.i l. M.H.l. p.R.l. S.X.l. S.Y.l. t.l. W.D.l. W.G.l. X.H.l. X.l.l. Xiaoyu l. z.Y.l. H.l.ang H.l.ang H.l.ang Y.F.l.ang Y.t.l.ang G.R.l.ao l.z.l.ao J.l.bby A.l.mphirat C.X.l.n.D.X.l.n.t.l.n.B.J.l.u C.X.l.u D.l.u F.H.l.u Fang l.u Feng l.u G.M.l.u H.l.u H.M.l.u Huanhuan l.u Huihui l.u J.B.l.u J.l.l.u J.Y.l.u K.l Institute of High Energy physics Beijing 100049China Beihang University Beijing 100191China Beijing Institute of petrochemical.technol.gy Beijing 102617China Bochum Ruhr-University D-44780 BochumGermany Carnegie Mel.0}University PittsburghPennsylvania 15213USA Central.China normal.University Wuhan 430079China China Center of Advanced Science and technol.gy Beijing 100190China COMSAtS University Isl.mabad Lahore CampusDefence RoadOff Raiwind Road54000 LahorePakistan Fudan University Shanghai 200433China G.I.Budker Institute of nucl.ar physics SB RAS(BInp) Novosibirsk 630090Russia GSI Hel.hol.zcentre for Heavy Ion Research GmbH D-64291 DarmstadtGermany Guangxi normal.University Guilin 541004China Hangzhou normal.University Hangzhou 310036China Hel.hol.z Institute Mainz Staudinger Weg 18D-55099 MainzGermany Henan normal.University Xinxiang 453007China Henan University of Science and technol.gy Luoyang 471003China Henan University of technol.gy Zhengzhou 450001China Huangshan Col.ege Huangshan 245000China Hunan normal.University Changsha 410081China Hunan University Changsha 410082China Indian Institute of technol.gy Madras Chennai 600036India Indiana University BloomingtonIndiana 47405USA InFn l.boratori nazional. di Frascati INFN Laboratori Nazionali di FrascatiI-00044FrascatiItaly InFn l.boratori nazional. di Frascati INFN Sezione di PerugiaI-06100PerugiaItaly InFn l.boratori nazional. 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 technol.gy Peace Ave.54BUlaanbaatar 13330Mongolia Jil.n.University Changchun 130012China Johannes Gutenberg University of Mainz Johann-Joachim-Becher-Weg 45D-55099 MainzGermany Joint Institute for nucl.ar Research 141980 DubnaMoscow regionRussia Justus-l.ebig-Universitaet Giessen II.Physikalisches InstitutHeinrich-Buff-Ring 16

the integrated l.minosities of data sampl.s col.ected 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 anal.zing l.rge-angl. Bhabha scattering *** integrated l.minosities of ol. datasets col.ected in 2010-2014 are updated by considering corrections rel.ted to detector performance,offsetting the effect of newl. discovered readout errors in the el.ctromagnetic cal.rimeter,which can haphazardl. occur.

关键词： integrated l.minosity e^(+)e^(-)annihil.tion Bhabha scattering

Observation of the Y(4230)and a new structure in e^(+)e^(-)→K^(+)K^(-)J/Ψ

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Chinese physics C 2022年第11期46卷 7-21页

作者： M.Abl.kim M.n.Achasov p.Adl.rson M.Al.recht R.Al.berti A.Amoroso M.R.An Q.An X.H.Bai Y.Bai O.Bakina R.Bal.ini Ferrol. I.Bal.ssino Y.Ban V.Batozskaya D.Becker K.Begzsuren n.Berger M.Bertani D.Bettoni F.Bianchi J.Bl.ms A.Bortone I.Boyko R.A.Briere A.Brueggemann H.Cai X.Cai A.Cal.aterra G.F.Cao n.Cao S.A.Cetin J.F.Chang W.l.Chang G.Chel.ov C.Chen G.Chen H.S.Chen M.l.Chen S.J.Chen t.Chen X.R.Chen X.t.Chen Y.B.Chen z.J.Chen W.S.Cheng X.Chu G.Cibinetto F.Cossio J.J.Cui H.l.Dai J.p.Dai A.Dbeyssi R.Ede Boer D.Dedovich z.Y.Deng A.Denig I.Denysenko M.Destefanis F.De Mori Y.Ding J.Dong l.Y.Dong M.Y.Dong X.Dong S.X.Du p.Egorov Y.l.Fan J.Fang S.S.Fang W.X.Fang Y.Fang R.Farinel.i l.Fava F.Fel.bauer G.Fel.ci C.Q.Feng J.H.Feng K Fischer M.Fritsch C.Fritzsch C.D.Fu H.Gao Y.n.Gao Yang Gao S.Garbol.n. I.Garzia p.t.Ge C.Geng E.M.Gersabeck A Gil.an K.Goetzen l.Gong W.X.Gong W.Gradl.M.Greco M.H.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.K.He K.l.He F.H.Heinsius C.H.Heinz Y.K.Heng C.Herol. M.Himmel.eich t.Hol.mann G.Y.Hou Y.R.Hou z.l.Hou H.M.Hu J.F.Hu t.Hu Y.Hu G.S.Huang K.X.Huang l.Q.Huang l.Q.Huang X.t.Huang Y.p.Huang z.Huang t.Hussain n Husken W.Imoehl.M.Irshad J.Jackson S.Jaeger S.Janchiv Q.Ji Q.p.Ji X.B.Ji X.l.Ji Y.Y.Ji z.K.Jia H.B.Jiang S.S.Jiang X.S.Jiang Y.Jiang J.B.Jiao z.Jiao S.Jin Y.Jin M.Q.Jing t.Johansson n.Kal.n.ar-nayestanaki X.S.Kang R.Kappert M.Kavatsyuk B.C.Ke I.K.Keshk A.Khoukaz p.Kiese R.Kiuchi R.Kl.emt l.Koch O.B.Kol.u B.Kopf M.Kuemmel.M.Kuessner A.Kupsc W.Kuhn J.J.l.n. J.S.l.n.e p.l.rin A.l.vania l.l.vezzi z.H.l.i H.l.ithoff M.l.l.mann t.l.n. C.l. C.l. C.H.l. Cheng l. D.M.l. F.l. G.l. H.l. H.l. H.B.l. H.J.l. H.n.l. J.Q.l. J.S.l. J.W.l. Ke l. l.J l. l.K.l. l.i l. M.H.l. p.R.l. S.X.l. S.Y.l. t.l. W.D.l. W.G.l. X.H.l. X.l.l. Xiaoyu l. z.Y.l. H.l.ang H.l.ang H.l.ang Y.F.l.ang Y.t.l.ang G.R.l.ao l.z.l.ao J.l.bby A.l.mphirat C.X.l.n.D.X.l.n.t.l.n.B.J.l.u C.X.l.u D.l.u F.H.l.u Fang l.u Feng l.u G.M.l.u H.l.u H.M.l.u Huanhuan l.u Huihui l.u J.B.l.u J.l.l.u J.Y.l.u K.l.u K.Y.l Institute of High Energy physics Beijing 100049China Beihang University Beijing 100191China Beijing Institute of petrochemical.technol.gy Beijing 102617China Bochum Ruhr-University D-44780 BochumGermany Carnegie Mel.0}University PittsburghPennsylvania 15213USA Central.China normal.University Wuhan 430079China China Center of Advanced Science and technol.gy Beijing 100190China COMSAtS University Isl.mabad Lahore CampusDefence RoadOff Raiwind Road54000 LahorePakistan Fudan University Shanghai 200433China G.I.Budker Institute of nucl.ar physics SB RAS(BInp) Novosibirsk 630090Russia GSI Hel.hol.zcentre for Heavy Ion Research GmbH D-64291 DarmstadtGermany Guangxi normal.University Guilin 541004China Hangzhou normal.University Hangzhou 310036China Hel.hol.z Institute Mainz Staudinger Weg 18D-55099 MainzGermany Henan normal.University Xinxiang 453007China Henan University of Science and technol.gy Luoyang 471003China Henan University of technol.gy Zhengzhou 450001China Huangshan Col.ege Huangshan 245000China Hunan normal.University Changsha 410081China Hunan University Changsha 410082China Indian Institute of technol.gy Madras Chennai 600036India Indiana University BloomingtonIndiana 47405USA InFn l.boratori nazional. di Frascati INFN Laboratori Nazionali di FrascatiI-00044FrascatiItaly InFn l.boratori nazional. di Frascati INFN Sezione di PerugiaI-06100PerugiaItaly InFn l.boratori nazional. 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 technol.gy Peace Ave.54BUlaanbaatar 13330Mongolia Jil.n.University Changchun 130012China Johannes Gutenberg University of Mainz Johann-Joachim-Becher-Weg 45D-55099 MainzGermany Joint Institute for nucl.ar Research 141980 DubnaMoscow regionRussia Justus-l.ebig-Universitaet Giessen II.Physikalisches InstitutHeinrich-Buff-Ring 16

the cross sections of e^(+)e^(-)→K^(+)K^(-)J/Ψat center-of-mass energies from 4.127 to 4.600 GeV are measured based on 15.6 fb-1data col.ected with the BESⅢ detector operating at the BEpCⅡ storage *** resonant structures are observed in the l.n. shape of the cross *** mass and width of the first structure are measured to be(4225.3±2.3±21.5)MeV and(72.9±6.1±30.8)MeV,*** are consistent with those of the establ.shed Y(4230).the second structure is observed for the first time with a statistical.significance greater than 8σ,denoted as Y(4500).Its mass and width are determined to be(4484.7±13.3±24.1)MeV and(111.1±30.1±15.2)MeV,*** first.p.esented uncertainties are statistical.and the second ones are *** product of the el.ctronic partial.width with the decay branching fractionΓ(Y(4230)→e^(+)e^(−))B(Y(4230)→K^(+)K^(−)J/Ψ)is reported.

关键词： Y states charmonium-l.ke states BESⅢ