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Acta Metallurgica Sinica(English.l.tters) 2001年第3期14卷 212-218页

作者： h.l. yang, d.c. kang, z.l. zhang, x.h. piao and z.d. shi (National die and Mold.c.d Engineering Research center, Shanghai Jiaotong University, Shanghai 200030, china) (School of Materials Sci. & Eng., harbin Institute of Technology, harbin 150001, china) National die and Mold.c.d Engineering Research center Shanghai Jiaotong University School of Materials Sci. & Eng. Harbin Institute of Technology

Shear-extrusion process and its forming parameters are proposed, wh.l.t its laborsaving characteristic is utiliz.d.to forge large-size shutoff valve bodies on the middle-due press. This new process is intended for the manufacture of large-size forged tubular components with branches on the middle-due press. Experiments are carried out and processing parameters are obtained regarding the shear- extrusion process of a large-size shutoff valve body. deformation and metal flow in the shear- extrusion process are investigated. In order to verify the laborsaving characteristic of this new process, some contrast experiments of extrusion force are performed between shear-extrusion and upsetting-extrusion for forming tubular components with branches. Based on rigid-plastic FEM, a plane-strain model is established to analyze shear-extrusion process of tubular components with branches. The analysis results by 2-dimensions FEM are comparatively well consistent with experimental results. Both simulated and experimental results show that this new forming process is feasible for forging large-size tubular components with branches on the middle-due press.

关键词： Metal extrusion Shearing Simulation Tubular steel structures

STcF conceptual design report (Volume 1): Physics & detector

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Frontiers of physics 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.Barnyakov V.Blinov V.Bobrovnikov d.Bodrov A.Bogomyagkov A.Bondar I.Boyko 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.d.ng 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.h.ng 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.l. c.li d.Y.li F.li G.li G.li h.B.li h.l. 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.l. S.li T.li W.J.li x.li x.h.l. x.Q.li x.h.l. Y.li Y.Y.li z.J.li h.l.ang J.h.l.ang Y.T.liang G.R.liao l.z.l.ao 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.l. P.lukin F.J.luo T.luo x.F.luo Y.h.l.o h.J.lyu x.R.lyu J.P.Ma P.Ma Y.Ma Y.M.Ma F.Maas S.Malde d.Matvienko z.x.Meng R.Mitch.l. A.Nefediev Y.Nefedov S.l.Olsen Q.Ouyang 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.Pyata B.B.Qi Y.Q.Qi W.B.Qian Y.Qian 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 Physics Novosibirsk 630090Russia cAS Key laboratory of Theoretical Physics Institute of Theoretical PhysicsChinese Academy of SciencesBeijing 100190China cavendish.l.boratory 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 Polytechnique 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 h.l.h.l.z Institute Mainz Staudinger Weg 18D-55099 MainzGermany henan Normal University Xinxiang 453007China henan University Kaifeng 475004China high Energy Physics 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 Physics Chinese Academy of SciencesBeijing 100049China Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China Institute of Physics Academia SinicaTaipeiTaiwan 11529China Institute of Theoretical Physics Chinese Academy of SciencesBeijing 100190China Jilin University Changch

The superτ-charm facility(STcF)is an electron–positron collider proposed by the chinese particle physics *** 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 prod.c. 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 asymmetry 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 physics beyond the Standard *** STcF project in china is under development with an extensive R&d *** d.c.ment presents the physics opportunities at the STcF,describes conceptual designs of the STcF detector system,and discusses future plans for detector R&d and physics case studies.

关键词： electron–positron collider tau-charm region high.l.minosity STcF detector conceptual design

Reconstruction of cherenkov image bymultiple telescopes of lhAASO-WFcTA

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Radiation detection Technology and Methods 2022年第4期6卷 544-557页

作者： F.Aharonian Q.An Axikegu l.x.Bai Y.x.Bai Y.W.Bao d.Bastieri x.J.Bi Y.J.Bi J.T.cai zhe cao zhen cao J.chang J.F.chang E.S.chen liang chen liang chen long chen M.J.chen M.l.chen Q.h.chen S.h.chen S.z.chen T.l.chen Y.chen h.l.cheng N.cheng Y.d.c.eng S.W.cui x.h.cui Y.d.c.i B.d’Ettorre Piazz.l. B.z.d.i h.l.dai z.G.dai danzengluobu ddella Volpe K.K.duan J.h.Fan Y.z.Fan z.x.Fan J.Fang K.Fang c.F.Feng l.Feng S.h.Feng x.T.Feng Y.l.Feng B.Gao c.d.Gao l.Q.Gao Q.Gao W.Gao W.K.Gao M.M.Ge l.S.Geng G.h.Gong Q.B.Gou M.h.Gu F.l.Guo J.G.Guo x.l.Guo Y.Q.Guo Y.Y.Guo Y.A.han h.h.he h.N.he S.l.he x.B.he Y.he M.h.l.er Y.K.hor c.hou x.h.u h.B.hu Q.hu S.hu S.c.hu x.J.hu d.h.huang W.h.huang x.T.huang x.Y.huang Y.huang z.c.huang x.l.Ji h.Y.Jia K.Jia K.Jiang z.J.Jiang M.Jin M.M.kang T.Ke d.Kuleshov K.levochkin B.B.li cheng li cong li F.li h.B.li h.c.li h.Y.li J.li Jian li Jie li K.li Wlli xRli xin li xin li Yzli zhe li zhuo li E.W.liang Y.F.liang S.J.lin B.liu c.liu d.liu h.l.u h.d.liu J.liu J.l.liu J.S.liu J.Y.liu M.Y.liu R.Y.liu S.M.liu W.liu Y.liu Y.N.liu W.J.long R.lu Q.luo h.K.lv B.Q.Ma l.l.Ma x.h.Ma J.R.Mao A.Masood z.Min W.Mitthumsiri Y.c.Nan z.W.Ou B.Y.Pang P.Pattarakijwanich z.Y.Pei M.Y.Qi Y.Q.Qi B.Q.Qiao J.J.Qin d.Ruffolo A.Sáiz c.Y.Shao l.Shao O.Shchegolev x.d.Sheng J.Y.shi h.c.Song Yu.V.Stenkin V.Stepanov Y.Su Q.N.Sun x.N.Sun z.B.Sun P.h.T.Tam z.B.Tang W.W.Tian B.d.Wang c.Wang h.Wang h.G.Wang J.c.Wang J.S.Wang l.P.Wang l.Y.Wang R.Wang R.N.Wang W.Wang x.G.Wang x.Y.Wang Y.Wang Y.d.Wang Y.J.Wang Y.P.Wang z.h.Wang z.x.Wang zhen Wang zheng Wang d.M.Wei J.J.Wei Y.J.Wei T.Wen c.Y.Wu h.R.Wu S.Wu x.F.Wu Y.S.Wu S.Q.xi J.xia J.J.xia G.M.xiang d.x.xiao G.xiao G.G.xin Y.l.xin Y.xing z.xiong d.l.xu R.x.xu l.xue d.h.Yan J.z.Yan c.W.yang F.F.yang h.W.yang J.Y.yang l.l.yang M.J.yang R.z.yang S.B.yang Y.h.Yao z.G.Yao Y.M.Ye l.Q.Yin N.Yin x.h.You z.Y.You Y.h.Yu Q.Yuan h.Yue h.d.zeng T.x.zeng W.zeng z.K.zeng M.zha x.x.zhai B.B.zhang F.zhang h.M.zhang h.Y.zhang J.l.zhang l.x.zhang li zhang lu zhang P.F.zhang P.P.zhang R.zhang S.B.zhang S.R.zhang S. Key laboratory of Particle Astrophyics&Experimental Physics division&computing center Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China University of chinese Academy of Sciences Beijing 100049China TIANFU cosmic Ray Research center ChengduSichuanChina dublin Institute for Advanced Studies 31 Fitzwilliam Place2DublinIreland Max-Planck-Institut for Nuclear Physics P.O.Box 10398069029 HeidelbergGermany State Key laboratory of Particle detection and Electronics BeijingChina University of Science and Technology of china Hefei 230026AnhuiChina School of Physical Science and Technology&School of Information Science and Technology Southwest Jiaotong UniversityChengdu 610031SichuanChina college of Physics Sichuan UniversityChengdu 610065SichuanChina School of Astronomy and Space Science Nanjing UniversityNanjing 210023JiangsuChina center for Astrophysics Guangzhou UniversityGuangzhou 510006GuangdongChina Key laboratory of dark Matter and Space Astronomy&Key laboratory of Radio Astronomy Purple Mountain ObservatoryChinese Academy of SciencesNanjing 210023JiangsuChina Key laboratory for Research in Galaxies and.c.smology Shanghai Astronomical ObservatoryChinese Academy of SciencesShanghai 200030China Key laboratory of cosmic Rays(Tibet University) Ministry of EducationLhasa 850000TibetChina National Astronomical Observatories Chinese Academy of SciencesBeijing 100101China hebei Normal University Shijiazhuang 050024HebeiChina School of Physics and Astronomy(zhuhai)&Sino-French Institute of Nuclear Engineering and Technology(zhuhai) Sun Yat-sen UniversityZhuhai 519000China School of Physics(Guangzhou) Sun Yat-sen UniversityGuangzhou 510275GuangdongChina dipartimento di Fisica dell’Universitàdi Napoli“Federico II” Complesso Universitario di Monte Sant’Angelovia Cinthia80126 NapoliItaly School of Physics and Astronomy Yunnan UniversityKunming 650091YunnanChina département de Physique Nucléaire et corpusculaire Facultéde SciencesUniversitéde Genève

Introd.c.ion One of main scientiﬁc goals of the large high Altitude Air Shower Observatory(lhAASO)is to accurately measure the energy spectra of different cosmic ray compositions around the‘knee’*** Wide Field-of-View(FoV)cherenkov Telescope Array(WFcTA),which is one of the main detectors of lhAASO and has 18 telescopes,is built to achieve this *** telescopes are put together and point to connected directions for a larger *** Telescopes are deployed spatially as close as possible,but due to their own size,the distance between two adjacent telescopes is about 10 ***,the cherenkov lateral distribution and the parallax between the two telescopes should be considered in the event building process for images crossing over the boundaries of FoVs of the *** event building method for cherenkov images measured by multiple telescopes of WFcTA is *** performance of the shower measurements using the combined images is evaluated by comparing with showers that are fully contained by a virtual telescope in *** and.c.nclusion It is proved that the developed event building process can h.l. to increase the FoV of WFcTA by 30%wh.l. maintaining the same reconstruction quality,compared to the separate telescope reconstruction method.

关键词： method directions conclusion

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.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.ch.l.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.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.h.l. Y.K.heng c.herold M.himmelreich T.h.l.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.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.Kühn J.J.lane J.S.lange P.larin A.lavania l.lavezzi z.h.l.i h.l.ithoff M.lellmann T.lenz c.li c.h.l. cheng li d.M.li F.li G.li h.l. h.l. 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.l. x.l.li z.Y.li h.l.ang h.l.ang h.l.ang Y.F.liang Y.T.liang l.z.l.ao J.libby c.x.lin B.J.liu c.x.liu d.liu F.h.l.u 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.l.u 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 Physics Beijing 100049China Beihang University Beijing 100191China Beijing Institute of Petrochemical Technology Beijing 102617China Bochum Ruhr-University D-44780 BochumGermany carnegie Mellon University PittsburghPennsylvania 15213USA central china Normal University Wuhan 430079China china center of Advanced Science and Technology Beijing 100190China cOMSATS University Islamabad Lahore CampusDefence RoadOff Raiwind Road54000 LahorePakistan Fudan University Shanghai 200443China GIBudker Institute of Nuclear Physics SB RAS(BINP) Novosibirsk 630090Russia GSI h.l.h.l.zcentre for heavy Ion Research Gmbh D-64291 DarmstadtGermany Guangxi Normal University Guilin 541004China Guangxi University Nanning 530004China hangzhou Normal University Hangzhou 310036China h.l.h.l.z 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 Physics Lanzhou 730000China Institute of Physics 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 ded.c.ted 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 physics processes,namely Bhabha scattering,dimuon prod.c.ion 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 physics analyses.

关键词： BESIII trigger efficiency Bhabha dimuon hadronic events

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.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.Boyko 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.ch.l.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.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.h.l. 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-Nayestanaki x.S.kang R.Kappert M.Kavatsyuk 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.l.ithoff 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.l. x.l.li x.N.li x.Q.li z.B.li h.l.ang h.l.ang Y.F.liang Y.T.liang G.R.liao l.z.l.ao 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.l.u 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.lyu 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 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 h.l.h.l.zcentre for heavy Ion Research Gmbh D-64291 DarmstadtGermany Guangxi Normal University Guilin 541004China Guangxi University Nanning 530004China hangzhou Normal University Hangzhou 310036China h.l.h.l.z 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 Physics 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.c.arm physics. This renaissance has been driven in part by the discovery of a plethora of charmonium-like xYz states at BESⅢ and B factories, and the observation of an intriguing proton-antiproton thresh.l. enhancement and the possibly related x(1835) meson state at BESⅢ, as well as the thresh.l. measurements of charm mesons and.c.arm baryons. We present a detailed survey of the important topics in tau-charm physics and hadron physics that can be further explored at BESⅢ during the remaining operation period of BEPcⅡ. This survey will h.l. in the optimization of the data-taking plan over the coming years, and provides physics motivation for the possible upgrade of BEPcⅡ to higher luminosity.

关键词： meson hadron optimization

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.ch.l.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.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.h.l. Y.K.heng c.herold M.himmelreich T.h.l.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.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.l.i h.l.ithoff M.lellmann T.lenz c.li c.h.l. cheng li d.M.li F.li G.li h.l. h.l. 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.l. x.l.li xiaoyu li z.Y.li h.l.ang h.l.ang h.l.ang 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.l.u 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.l.u 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 Physics Beijing 100049China Beihang University Beijing 100191China Beijing Institute of Petrochemical Technology Beijing 102617China Bochum Ruhr-University D-44780 BochumGermany carnegie Mellon University PittsburghPennsylvania 15213USA central china Normal University Wuhan 430079China china center of Advanced Science and Technology Beijing 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 h.l.h.l.zcentre for heavy Ion Research Gmbh D-64291 DarmstadtGermany Guangxi Normal University Guilin 541004China Guangxi University Nanning 530004China hangzhou Normal University Hangzhou 310036China h.l.h.l.z 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 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.c.armonium and.c.armoniumlike *** analyzing 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^(-) annih.l.tion BESIII

Amplitude analysis of the d.c.ys 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.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.Batozskaya K.Begzsuren N.Berger M.Berlowski M.Bertani d.Bettoni F.Bianchi E.Bianco A.Bortone I.Boyko 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.ch.l.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.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 yang 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.h.l.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.h.ang 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.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.Kalantar-Nayestanaki x.l.kang x.S.kang M.Kavatsyuk B.c.Ke V.Khachatryan 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.l.i h.l.ithoff M.lellmann T.lenz c.li c.li c.h.l. cheng li d.M.li F.li G.li h.l. 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.l. 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.l. x.l.li x.Y.li Y Institute of high Energy Physics Chinese Academy of SciencesBeijing 100049China Beihang University Beijing 100191China Bochum Ruhr-University D-44780 BochumGermany Budker Institute of Nuclear Physics 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 h.l.h.l.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 h.l.h.l.z 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 Physics Lanzhou 730000China Institute of Physics and Technology Peace Avenue 54BUlaanbaatar 13330Mongolia Instituto de A

Using e^(+)e^(−)annih.l.tion 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 analysis is performed on the d.c.ys 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 d.c.ys 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_(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.))%,*** amplitude analysis 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^(−)d.c.y.

关键词： BESIII d^(0)meson d.c.ys amplitude analysis cP-even fraction

Evidence for the d.c.ys 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.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.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.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.l.ang Y.F.liang Y.T.liang G.R.liao l.z.l.ao c.x.lin d.x.lin B.liu B.J.liu c.x.liu d.liu d.Y.liu F.h.l.u 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.lyu 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.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 Nuclear Physics SB RAS(BINP) the Novosibirsk State University h.l.h.l.z 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 Physics 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 Physics and Technology the Functional Electronics laboratory Tomsk State University University of South china Nanjing University Shanghai Jiao Tong University Key laboratory for Particle Physics 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 h.l.h.l.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 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 Yat-Sen University Sichuan University Guangxi Normal University Indian Institute of Technology Madras Shanxi University henan University of Science and Technology lanzhou University zhejiang University Fudan University Key laboratory of Nuclear Physics and Ion-beam Application(MOE)and Institute of

We study the hadronic d.c.ys of ∧c+ to the final states ∑+η and ∑+η’,using an e+e-annih.l.tion 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 d.c.ys ∧c+→∑+η and ∑+η’ with statistical significance of 2.5σ and 3.2σ,*** to the reference d.c.ys ∧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 d.c.ys,we determine B（∧c+→∑+η）=（0.41±0.19±0.05）%（d 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 baryon ∧c^+ d.c.ys branching fractions

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.Ablikim M.N.Achasov P.Adlarson 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 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 h.cai x.cai A.calcaterra G.F.cao N.cao S.A.cetin J.F.chang W.l.chang G.ch.l.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.Farinelli l.Fava F.Feldbauer G.Felici c.Q.Feng J.h.Feng K Fischer M.Fritsch c.Fritzsch c.d.Fu h.Gao Y.N.Gao yang Gao S.Garbolino I.Garzia P.T.Ge c.Geng E.M.Gersabeck A Gilman 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.herold M.himmelreich T.h.l.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.h.ang 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.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 W.Kuhn J.J.lane J.S.lange P.larin A.lavania l.lavezzi z.h.l.i h.l.ithoff M.lellmann T.lenz c.li c.li c.h.l. cheng li d.M.li F.li G.li h.l. h.l. h.B.li h.J.li h.N.li J.Q.li J.S.li J.W.li Ke li l.J li l.K.li lei li M.h.l. P.R.li S.x.li S.Y.li T.li W.d.li W.G.li x.h.l. x.l.li xiaoyu li z.Y.li h.l.ang h.l.ang h.l.ang Y.F.liang Y.T.liang G.R.liao l.z.l.ao J.libby A.limphirat c.x.lin d.x.lin T.lin B.J.liu c.x.liu d.liu F.h.l.u Fang liu Feng liu G.M.liu h.l.u h.M.liu huanhuan liu huihui liu J.B.liu J.l.liu J.Y.liu K.liu K.Y.l Institute of high Energy Physics Beijing 100049China Beihang University Beijing 100191China Beijing Institute of Petrochemical Technology Beijing 102617China Bochum Ruhr-University D-44780 BochumGermany carnegie Mellon University PittsburghPennsylvania 15213USA central china Normal University Wuhan 430079China china center of Advanced Science and Technology Beijing 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 h.l.h.l.zcentre for heavy Ion Research Gmbh D-64291 DarmstadtGermany Guangxi Normal University Guilin 541004China hangzhou Normal University Hangzhou 310036China h.l.h.l.z 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 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.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 collected with the BESⅢ detector operating at the BEPcⅡ storage *** resonant structures are observed in the line 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 established 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 presented uncertainties are statistical and the second ones are *** prod.c. of the electronic partial width with the d.c.y branching fractionΓ(Y(4230)→e^(+)e^(−))B(Y(4230)→K^(+)K^(−)J/Ψ)is reported.

关键词： Y states charmonium-like states BESⅢ

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： 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 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 h.cai x.cai A.calcaterra G.F.cao N.cao S.A.cetin J.F.chang W.l.chang G.ch.l.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.Farinelli l.Fava F.Feldbauer G.Felici c.Q.Feng J.h.Feng K Fischer M.Fritsch c.Fritzsch c.d.Fu h.Gao Y.N.Gao yang Gao S.Garbolino I.Garzia P.T.Ge c.Geng E.M.Gersabeck A Gilman 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.herold M.himmelreich T.h.l.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.h.ang 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.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 W.Kuhn J.J.lane J.S.lange P.larin A.lavania l.lavezzi z.h.l.i h.l.ithoff M.lellmann T.lenz c.li c.li c.h.l. cheng li d.M.li F.li G.li h.l. h.l. h.B.li h.J.li h.N.li J.Q.li J.S.li J.W.li Ke li l.J li l.K.li lei li M.h.l. P.R.li S.x.li S.Y.li T.li W.d.li W.G.li x.h.l. x.l.li xiaoyu li z.Y.li h.l.ang h.l.ang h.l.ang Y.F.liang Y.T.liang G.R.liao l.z.l.ao J.libby A.limphirat c.x.lin d.x.lin T.lin B.J.liu c.x.liu d.liu F.h.l.u Fang liu Feng liu G.M.liu h.l.u h.M.liu huanhuan liu huihui liu J.B.liu J.l.liu J.Y.liu K.l Institute of high Energy Physics Beijing 100049China Beihang University Beijing 100191China Beijing Institute of Petrochemical Technology Beijing 102617China Bochum Ruhr-University D-44780 BochumGermany carnegie Mellon University PittsburghPennsylvania 15213USA central china Normal University Wuhan 430079China china center of Advanced Science and Technology Beijing 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 h.l.h.l.zcentre for heavy Ion Research Gmbh D-64291 DarmstadtGermany Guangxi Normal University Guilin 541004China hangzhou Normal University Hangzhou 310036China h.l.h.l.z 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 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.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^(-)annih.l.tion Bhabha scattering