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

Chinese Physics C 2019年第8期43卷 15-23页

作者： m.Ablik.m.F.F.An Q.An Y.Bai Y.Ban h.Cai x.Cai G.F.Cao J.F.Chang G.Chen h.S.Chen J.C.Chen m.L.Chen P.L.Chen S.J.Chen Y.B.Chen W.Cheng h.LDai J.P.Dai z.Y.Deng Y.Ding C.Dong J.Dong L.Y.Dong m.Y.Dong z.L.Dou S.x.Du P.F.Duan J.z.Fan J.fang S.S.fang Y.fang C.Q.Feng C.D.Fu Y.Fu Q.Gao x.L.Gao Y.Gao Y.G.Gao z.Gao L.Gong W.x.Gong L.m.Gu m.h.Gu Y.T.Gu A.Q.Guo L.B.Guo R.P.Guo Y.P.Guo S.han x.Q.hao k.L.he Y.k.heng z.L.hou h.m.hu J.F.hu T.hu Y.hu G.S.huang J.S.huang x.T.huang x.z.huang z.L.huang Q.Ji Q.P.Ji x.B.Ji x.L.Ji x.S.Jiang x.Y.Jiang J.B.Jiao z.Jiao D.P.Jin S.Jin Y.Jin x.S.kang B.C.ke C.Li Cheng Li D.m.Li F.Li F.Y.Li G.Li h.B.Li h.J.Li J.C.Li J.W.Li ke Li Lei Li P.L.Li P.R.Li Q.Y.Li T.Li W.D.Li W.G.Li x.L.Li x.N. Li x.Q.Li z.B.Li h.Liang Y.F.Liang Y.T.Liang G.R.Liao L.z.Liao C.x.Lin D.x.Lin B.Liu B.J.Liu C.x.Liu D.Liu D.Y.Liu F.h.Liu fang Liu Feng Liu h.B.Liu h.L.Liu h.m.Liu huanhuan Liu huihui Liu J.B.Liu J.Y.Liu k.Liu k.Y.Liu ke Liu Q.Liu S.B.Liu x.Liu Y.B.Liu z.A.Liu zhiqing Liu Y.F.Long x.C.Lou h.J.lu J.D.lu J.G.lu Y.lu Y.P.lu C.L.luo m.x.luo T.luo x.L.luo x.R.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.m. 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 helmholtz Institute mainz Boch.m.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 helmholtzcentre for heavy Ion Research Gmbh Guangxi university Nanjing Normal university kVI-CART University of Groningen henan Normal university university of hawaii Honolulu Shandong university university of the Punjab university of muenster Uppsala university huangshan College university of Jinan Justus-Liebig-Universitaet Giessen II.Physikalisches Institut Istanbul Arel university Soochow university beijing Institute of Petroch.m.cal 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 decays of ∧c+ to the final states ∑+η and ∑+η’,using an e+e-annihilation data sample of 567 pb-1 taken at a center-of-mass energy of 4.6 GeV with the BESIII detector at the BEPCⅡ *** find evidence for the 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 limits at the 90% confidence level 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）%（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^+ decays branching fractions

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Protein O-GlcNAcylation h.m.ostasis regulates facultative heterochromatin to fine-tune sog-Dpp signaling during Drosophila early embryogenesis

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Journal of Genetics and Genomics 2023年第12期50卷 948-959页

作者： Yaowen zhang haibin Yu Dandan Wang xiaoyun Lei Yang meng Na zhang fang Chen lu Lv Qian Pan hongtao Qin zhuohua zhang Daan m.F.van Aalten kai Yuan Center for medical Genetics School of Life Sciences&Hunan Key Laboratory of Molecular Precision MedicineDepartment of OncologyXiangya HospitalCentral South UniversityChangshaHunan 410008China State key Laboratory of Ch.m./Biosensing and Ch.m.metrics College of BiologyHunan UniversityChangshaHunan 410082China National Clinical Research Center for Geriatric Disorders Xiangya HospitalCentral South UniversityChangshaHunan 410008China Division of Cell and Developmental Biology School of Life SciencesUniversity of DundeeDundee DD15EHUK department of molecular Biology and Genetics University of AarhusAarhus 8000Denmark The Biobank of xiangya hospital Central South UniversityChangshaHunan 410008China

Protein O-GlcNAcylation is a monosaccharide post-translational modification maintained by two evolutionarily conserved enzymes, O-GlcNAc transferase (OGT) and O-GlcNAcase (OGA). mutations in h.m.n OGT have recently been associated with neurodevelopmental disorders, although the mechanisms linking O-GlcNAc h.m.ostasis to neurodevelopment are not understood. here, we investigate the effects of perturbing protein O-GlcNAcylation using transgenic Drosophila lines that overexpress a highly active OGA. We reveal that temporal reduction of protein O-GlcNAcylation in early embryos leads to reduced brain size and olfactory learning in adult Drosophila. Downregulation of O-GlcNAcylation induced by the exogenous OGA activity promotes nuclear foci formation of Polycomb-group protein Polyh.m.otic and the accumulation of excess k27 trimethylation of histone h3 (h3k27me3) at the mid-blastula transition. These changes interfere with the zygotic expression of several neurodevelopmental genes, particularly short gastrulation (sog), a component of an evolutionarily conserved sog-Decapentaplegic (Dpp) signaling system required for neuroectoderm specification. Our findings highlight the importance of early embryonic O-GlcNAcylation h.m.ostasis for the fidelity of facultative heterochromatin redeployment and initial cell fate commitment of neuronal lineages, suggesting a possible mechanism underpinning OGT-associated intellectual disability.

关键词： Protein O-GlcNAcylation Drosophila Early embryogenesis Polycomb repressive complex Facultative heterochromatin Neurodevelopment sog

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measurement of the integrated luminosities of cross-section scan data samples around theψ(3770)mass region

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Chinese Physics C 2018年第6期42卷 1-8页

作者： m. Ablik.m.m. N. Achasov S. Ahmed m. Albrecht m. Alekseev A. Amoroso F. F. An Q. An Y. Bai O. Bakina R. Baldini Ferroli Y. Ban k. Begzsuren D. W. Bennett J. V. Bennett N. Berger m. Bertani D. Bettoni F. Bianchi E. Boger I. Boyko R. A. Briere h. Cai x. Cai O. Cakir A. Calcaterra G. F. Cao S. A. Cetin J. Chai J. F. Chang W. L. Chang G. Chelkov G. Chen h. S. Chen J. C. Chen m. L. Chen P. L. Chen S. J. Chen x. R. Chen Y. B. Chen x. k. Chu G. Cibinetto F. Cossio h. a. Dai, J. F. 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 P. F. nuan J. fang S. S. fang Y. fang R. Farinelli L. Fava S. Fegan F. Feldbauer G. Felici C. Q. Feng E. Fioravanti m. Fritsch C. D. Fu Q. Gao x. L. Gao Y. Gao, Y. G. Gao z. Gao B. Garillon I. Garzia 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 L. B. Guo R. P. Guo Y. F. Guo A. Guskov z. haddadi S. han x. Q. hao F. A. harris z. L. he x. O. he F. h. heinsius T. held Y. k. heng T. holtmann z. L. hou h. m. hu J. F. gu T. hu Y. hu G. S. huang J. S. huang x. T. huang x. z. huang z. L. guang T. hussain W. Ikegami Andersson m Irshad 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 T. Johansson A. Julin N. kalantar-Nayestanaki x. S. kang m. kavatsyuk B. C. ke T. khan A. khoukaz P. kiese R. kliemt L. koch O. B. kolcu B. kopf m. kornicer m. kuemmel m. kuessner A. kupsc m. kurth W. kiihn J. S. Lange m. Lara P. Larin L. Lavezzi S. Leiber h. Leithofi 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 k. J. Li kang Li ke Li Lei Li P. L. Li P. R. Li Q. Y. Li T. Li W. D. Li W. G. Li x. L. Li x. N. Li x. Q. Li z. B. Li h. Liang Y. F. Liang Y. T. Liang G. R. Liao L. z. Liao J. Libby C. x. Lin D. x. Lin S. Liu B. J. Liu C. x. Liu D. Liu D. Y. Liu F. h. Liu fang Liu Feng Liu h. B. Liu h. L Liu h. m. Liu huanhuan Liu huihui Liu J. B. Liu J. Y. Liu k. Liu k. Y. Liu ke Liu L. D. Liu Q. Liu S B. Y. Zhang144 C. C. Zhang1D. H. Zhang1 H. H. Zhang45H. Y. Zhang144 J. Zhang151 J. L. Zhang65 J. Q. Zhang4 J. W. Zhang1 J. Y. Zhang1 J. Z. Zhang151 K. Zhang151 L. Zhang46 S. F. Zhang35 T. J. Zhang3975 X. Y. Zhang38 Y. Zhang4457 Y. H. Zhang144 Y. T. Zhang4557 Yang Zhang1 Yao Zhang1 Yu Zhang51 Z. H. Zhang6 Z. P. Zhan57Z. Y. Zhang64 G. Zhao1J. W. Zhao144 J. Y. Zhao151 J. Z. Zhao144 Lei Zhao4457 Ling Zhao1 M. G. Zhao35 Q. Zhao1 S. J. Zhao67 T. C. Zhao1 Y. B. Zhao144 Z. G. Zhao4457 A. Zhemehugov2869 B. Zheng58J. P. Zheng144 W. J. Zheng38 Y. H. Zheng51B. Zhong33 L. Zhou144 Q. Zhou151 X. Zhou64 X. K. Zhou4457 X. R. Zhou4457 X. Y. Zhou1 A. N. Zhu151 J. Zhu35 J. Zhu45 K. Zhu1 K. J. Zhu1 S. Zhu1 S. H. Zhu56 X. L. Zhu46 Y. C. Zhu4457 Y. S. Zhu151 Z. A. Zhu151 J. Zhuang144B. S. Zou1 J. H. Zou1 （ 1 Institute of High Energy Physics Beijing 100049 China Beihang university Beijing 100191 China beijing Institute of Petroch.m.cal technology Beijing 102617 China Boch.m.Ruhr-university D-44780 Bochum Germany Carnegie mellon university Pittsburgh Pennsylvania 15213 USA Central china Normal university Wuhan 430079 China china Center of Advanced science and technology Beijing 100190 China COmSATS Institute of Information technology Lahore Defence Road Off Raiwind Road 54000 Lahore Pakistan G.I. Budker Institute of Nuclear Physics SB RAS （BINP） Novosibirsk 630090 Russia GSI helmholtzcentre for heavy Ion Research Gmbh D-64291 Darmstadt Germany Guangxi Normal university Guilin 541004 China Guangxi university Nanning 530004 China hangzhou Normal university Hangzhou 310036 China helmholtz Institute mainz JohannwJoachim-Becher-Weg 45 D-55099 Mainz Germany henan Normal university Xinxiang 453007 China henan university of science and technology Luoyang 471003 China huangshan College Huangshan 245000 China hunan Normal university Changsha 410081 China hunan university Changsha 410082 China Indian Institute of Tec

To investigate the nature of the Ψ（3770） resonance and to measure the cross section for e^＋e^-→DD, a cross-section scan data sample, distributed among 41 center-of-mass energy points from 3.73 to 3.89 GeV, was taken with the BESIII detector operated at the BEPCII collider in the year 2010. By analyzing the large angle Bhabha scattering events, we measure the integrated luminosity of the data sample at each center-of-mass energy point. The total integrated luminosity of the data sample is 76.16±0.04±0.61 pb^-1, where the first uncertainty is statistical and the second systematic.

关键词： Bhabha scattering events integrated luminosity BESⅢ

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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.Ablik.m.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.Chelkov Chen G.Chen h.S.Chen J.C.Chen m.L.Chen S.J.Chen Y.B.Chen h.Y.Cheng W.Cheng G.Cibinetto F.Cossio x.F.Cui h.L.Dai J.P.Dai x.C.Dai A.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.held Y.k.heng Y.R.hou z.L.hou h.m.hu J.F.hu T.hu Y.hu G.S.huang J.S.huang x.T.huang x.z.huang z.L.huang N.huesken T.hussain W.Ikegami Andersson W.Imoehl m.Irshad Q.Ji Q.P.Ji x.B.Ji x.L.Ji h.L.Jiang x.S.Jiang x.Y.Jiang J.B.Jiao z.Jiao D.P.Jin S.Jin Y.Jin T.Johansson N.kalantar-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.Leithoff T.Lenz C.Li Cheng Li D.m.Li F.Li F.Y.Li G.Li h.B.Li h.J.Li J.C.Li J.W.Li ke Li L.k.Li Lei Li P.L.Li P.R.Li Q.Y.Li W.D.Li W.G.Li x.h.Li x.L.Li x.N.Li x.Q.Li z.B.Li h.Liang h.Liang Y.F.Liang Y.T.Liang G.R.Liao L.z.Liao J.Libby C.x.Lin D.x.Lin Y.J.Lin B.Liu B.J.Liu C.x.Liu D.Liu D.Y.Liu F.h.Liu fang Liu Feng Liu h.B.Liu h.m.Liu huanhuan Liu huihui Liu J.B.Liu J.Y.Liu k.Y.Liu ke Liu Q.Liu S.B.Liu T.Liu x.Liu x.Y.Liu Y.B.Liu z.A.Liu zhiqing Liu Y.F.Long x.C.Lou h.J.lu J.D.lu J.G.lu Y.lu Y.P.lu C.L.luo m.x.luo P.W.luo T.luo x.L.luo S.lusso x.R.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 Petroch.m.cal technology Beijing 102617China Boch.m.Ruhr-university D-44780 BochumGermany Carnegie mellon university PittsburghPennsylvania 15213USA Central china Normal university Wuhan 430079China china Center of Advanced science and technology Beijing 100190China COmSATS university Islamabad Lahore CampusDefence RoadOff Raiwind Road54000 LahorePakistan Fudan university Shanghai 200443China G.I.Budker Institute of Nuclear Physics SB RAS(BINP) Novosibirsk 630090Russia GSI helmholtzcentre for heavy Ion Research Gmbh D-64291 DarmstadtGermany Guangxi Normal university Guilin 541004China Guangxi university Nanning 530004China hangzhou Normal university Hangzhou 310036China helmholtz Institute mainz 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 charm 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 threshold enhancement and the possibly related x(1835) meson state at BESⅢ, as well as the threshold measurements of charm mesons and charm 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 help 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

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

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Chinese Physics C 2022年第11期46卷 53-63页

作者： m.Ablik.m.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.Chelkov 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.h.m.elreich T.holtmann 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.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.Lei h.Leithoff m.Lellmann T.Lenz C.Li C.Li C.h.Li Cheng Li D.m.Li F.Li G.Li h.Li h.Li 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.Li P.R.Li S.x.Li S.Y.Li T.Li W.D.Li W.G.Li x.h.Li x.L.Li xiaoyu Li z.Y.Li h.Liang h.Liang h.Liang Y.F.Liang Y.T.Liang G.R.Liao L.z.Liao J.Libby A.Limphirat C.x.Lin D.x.Lin T.Lin B.J.Liu C.x.Liu D.Liu F.h.Liu fang Liu Feng Liu G.m.Liu h.Liu 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 Petroch.m.cal technology Beijing 102617China Boch.m.Ruhr-university D-44780 BochumGermany Carnegie mellon university PittsburghPennsylvania 15213USA Central china Normal university Wuhan 430079China china Center of Advanced science and technology Beijing 100190China COmSATS university Islamabad Lahore CampusDefence RoadOff Raiwind Road54000 LahorePakistan Fudan university Shanghai 200433China G.I.Budker Institute of Nuclear Physics SB RAS(BINP) Novosibirsk 630090Russia GSI helmholtzcentre for heavy Ion Research Gmbh D-64291 DarmstadtGermany Guangxi Normal university Guilin 541004China hangzhou Normal university Hangzhou 310036China helmholtz Institute mainz Staudinger Weg 18D-55099 MainzGermany henan Normal university Xinxiang 453007China henan university of science and technology Luoyang 471003China henan university of technology Zhengzhou 450001China huangshan College Huangshan 245000China hunan Normal university Changsha 410081China hunan university Changsha 410082China Indian Institute of technology madras Chennai 600036India Indiana university BloomingtonIndiana 47405USA INFN Laboratori Nazionali di Frascati INFN Laboratori Nazionali di FrascatiI-00044FrascatiItaly INFN Laboratori Nazionali di Frascati INFN Sezione di PerugiaI-06100PerugiaItaly INFN Laboratori Nazionali di Frascati University of PerugiaI-06100PerugiaItaly INFN Sezione di Ferrara INFN Sezione di FerraraI-44122FerraraItaly INFN Sezione di Ferrara University of FerraraI-44122FerraraItaly Institute of modern Physics Lanzhou 730000China Institute of Physics and technology Peace Ave.54BUlaanbaatar 13330Mongolia 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^(-)annihilation Bhabha scattering

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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.Ablik.m.m.N.Achasov S.Ahmed m.Albrecht m.Alekseev A.Amoroso F.F.An Q.An Y.Bai O.Bakina R.Baldini Ferroli 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.Calcaterra G.F.Cao S.A.Cetin J.Chai J.F.Chang W.L.Chang G.Chelkov 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.Farinelli L.Fava F.Feldbauer G.Felici C.Q.Feng m.Fritsch C.D.Fu Y.Fu Q.Gao x.L.Gao Y.N.Gao Y.G.Gao z.Gao B.Garillon I.Garzia A.Gilman 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.held 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.kalantar-Nayestanaki x.S.kang 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 W.kühn J.S.Lange P.Larin L.Lavezzi h.Leithoff 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.L.Li x.N.Li x.Q.Li z.B.Li h.Liang Y.F.Liang Y.T.Liang G.R.Liao L.z.Liao J.Libby C.x.Lin D.x.Lin B.Liu B.J.Liu C.x.Liu D.Liu D.Y.Liu F.h.Liu fang Liu Feng Liu h.B.Liu h.L Liu h.m.Liu huanhuan Liu huihui Liu J.B.Liu J.Y.Liu k.Y.Liu kai 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 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.ma x.Y.ma Y.m.ma F.E.maas m.maggiora S.maldaner Q.A.malik A.mangoni Y.J.mao z.P.mao S.marcello z.x.meng J.G.messchendorp G.mezzadri J.min T.J.min R.E.mitchell x.h.m. Y Institute of high Energy Physics Beijing 100049China Beihang university Beijing 100191China beijing Institute of Petroch.m.cal technology Beijing 102617China Boch.m.Ruhr-university D-44780 BochumGermany Carnegie mellon university PittsburghPennsylvania 15213USA Central china Normal university Wuhan 430079China china Center of Advanced science and technology Beijing 100190China COmSATS university Islamabad Lahore CampusDefence RoadOff Raiwind Road54000 LahorePakistan Fudan university Shanghai 200443China G.I.Budker Institute of Nuclear Physics SB RAS(BINP) Novosibirsk 630090Russia GSI helmholtzcentre for heavy Ion Research Gmbh D-64291 DarmstadtGermany Guangxi Normal university Guilin 541004China Guangxi university Nanning 530004China hangzhou Normal university Hangzhou 310036China helmholtz Institute mainz 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

Studies of e^+e~→D_s^+■^((*)0)k^-and the P-wave charmed-strange mesons are performed based on an e^+e^-collision data sample corresponding to an integrated luminosity of 567 pb^(-1) collected 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)^-, respectively. 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 samples taken at four(two) center-of-mass energies between 4.416(4.527) and 4.575 GeV, and upper limits at the 90% confidence level on the cross sections are determined.

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

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Observations of the Cabibbo-Suppressed decays Λ_(c)^(+)→nπ+π^(0),nπ^(+)π^(-)π^(+) and the Cabibbo-Favored decay Λ_(c)^(+)→nk^(-)π^(+)π^(+)

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Chinese Physics C 2023年第2期47卷 1-18页

作者：麦迪娜 m.N.Achasov P.Adlarson m.Albrecht R.Aliberti A.Amoroso 安美儒安琪白羽 O.Bakina R.Baldini Ferroli I.Balossino 班勇 V.Batozskaya D.Becker k.Begzsuren N.Berger m.Bertani D.Bettoni F.Bianchi E.Bianco J.Bloms A.Bortone I.Boyko R.A.Briere A.Brueggemann 蔡浩蔡啸 A.Calcaterra 曹国富曹宁 S.A.Cetin 常劲帆常万玲车国荣 G.Chelkov 陈琛陈超陈刚陈和生陈玛丽陈申见陈少敏 T.Chen 陈旭荣 x.T.Chen 陈元柏陈卓俊成伟帅 S.k.Choi 初晓 G.Cibinetto F.Cossio 崔佳佳代洪亮代建平 A.Dbeyssi R.Ede Boer D.Dedovich 邓子艳 A.Denig I.Denysenko m.Destefanis F.De mori 丁勇丁逸董静董燎原董明义董翔杜书先段宗欢 P.Egorov 范玉兰方建房双世方文兴方易 R.Farinelli L.Fava F.Feldbauer G.Felici 封常青冯俊华 k Fischer m.Fritsch C.Fritzsch 傅成栋高涵高原宁高扬 S.Garbolino I.Garzia 葛潘婷葛振武耿聪 E.m.Gersabeck A Gilman k.Goetzen 龚丽龚文煊 W.Gradl m.Greco 谷立民顾旻皓顾运厅关春懿郭爱强郭立波郭如盼郭玉萍 A.Guskov 韩文颖郝喜庆 F.A.harris 何凯凯何康林 F.h.heinsius C.h.heinz 衡月昆 C.herold 侯国一侯颖锐侯治龙胡海明 J.F.hu 胡涛胡誉黄光顺黄凯旋黄麟钦黄性涛黄燕萍黄震 T.hussain N hüsken W.Imoehl m.Irshad J.Jackson S.Jaeger S.Janchiv E.Jang J.h.Jeong 纪全姬清平季晓斌季筱璐吉钰瑶贾泽坤姜赛赛江晓山 Y.Jiang 焦健斌焦铮金山金毅荆茂强 T.Johansson N.kalantar-Nayestanaki 康晓珅 R.kappert m.kavatsyuk 柯百谦 I.k.keshk A.khoukaz R.kiuchi R.kliemt L.koch O.B.kolcu B.kopf m.kuemmel m.kuessner A.kupsc W.kühn J.J.Lane J.S.Lange P.Larin A.Lavania L.Lavezzi 雷祚弘 h.Leithoff m.Lellmann T.Lenz 李翠李聪李春花李澄李德民李飞李刚李慧李贺李海波李惠静 h.N.Li J.Q.Li 李静舒李井文李科 L.J Li 李龙科李蕾李明浩李培荣李素娴栗帅迎李腾李卫东李卫国李旭红李晓玲李晓宇李彦谷李振轩李紫源梁畅梁昊梁浩梁浩梁勇飞梁羽铁廖广睿廖龙洲 J.Libby A.Limphirat 林创新林德旭 T.Lin 刘北江刘成刘春秀 D.Liu 刘福虎刘芳刘峰 G.m.Liu h.Liu 刘宏邦刘怀民刘欢欢刘汇慧刘建北刘佳俊刘晶译刘凯刘魁勇刘珂刘亮刘露刘美宏刘佩莲刘倩刘树彬刘桐刘维克刘卫民刘翔刘英刘玉斌刘振安刘智青娄辛丑卢飞翔吕海江吕军光陆小玲卢宇卢云鹏 z.h.lu 罗成林罗民兴罗涛罗小兰吕晓睿吕翌丰马凤才马海龙马连良马明明马秋梅马润秋马瑞廷马骁妍马尧 F.E.maas m.maggiora S.maldaner S.malde Q.A.malik A.mangoni 冒亚军毛泽普 S.marcello 孟召霞 J.G.messchendorp G.mezzadri h.m.ao 闵天觉 R.E.mitchell 莫晓虎 N.Yu.muchnoi Y.Nefedov F.Nerling I.B.Nikolaev 宁哲 S.Nisar 牛艳 S.L.Olsen 欧阳群 S.Pacetti 潘祥潘越 A.Pathak P.Patteri m.Pelizaeus 彭海平 k.Peters 平加伦平荣刚 S.Plura S.Pogodin V.Prasad 齐法制齐航漆红荣祁鸣齐天钰钱森钱文斌钱圳乔从丰秦佳佳秦丽清覃潇平秦小帅秦中华邱进发屈三强 k.h.Rashid C.F Institute of high Energy Physics Beijing 100049China Beihang university Beijing 100191China beijing Institute of Petroch.m.cal technology Beijing 102617China Boch.m.Ruhr-university D-44780 BochumGermany 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 COmSATS university Islamabad Lahore CampusDefence RoadOff Raiwind Road54000 LahorePakistan Fudan university Shanghai 200433China G.I.Budker Institute of Nuclear Physics SB RAS(BINP) Novosibirsk 630090Russia GSI helmholtzcentre for heavy Ion Research Gmbh D-64291 DarmstadtGermany Guangxi Normal university Guilin 541004China Guangxi university Nanning 530004China hangzhou Normal university Hangzhou 310036China hebei university Baoding 071002China helmholtz Institute mainz Staudinger Weg 18D-55099 MainzGermany henan Normal university Xinxiang 453007China henan university 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 I-00044FrascatiItaly INFN Sezione di Perugia I-06100PerugiaItaly university of Perugia I-06100PerugiaItaly INFN Sezione di Ferrara I-44122FerraraItaly university of Ferrara I-44122FerraraItaly Institute of modern Physics Lanzhou 730000China Institute of Physics and technology Peace Avenue 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 16D-35392 GiessenGermany Lanzhou Un

Using electron-positron annihilation data samples corresponding to an integrated luminosity of 4.5 fb-1,collected by the BESⅢdetector in the energy region between 4599.53 meV and 4698.82 meV,we report the first observations of the Cabibbo-suppressed decaysΛ_(c)^(+)→nπ^(+)π^(0),Λ_(c)^(+)→nπ^(+)π^(-)π^(+),and the Cabibbo-favored decayΛ_(c)^(+)→nk^(-)π^(+)π^(+)with statistical significances of 7.9σ,7.8σ,and>10σ,*** branching fractions of these decays are measured to be B(Λ_(c)^(+)→nπ^(+)π^(0))=(0.64±0.09±0.02)%,B(Λ_(c)^(+)→nπ^(+)π^(-)π^(+))=(0.45±0.07±0.03)%,and B(Λ_(c)^(+)→nk^(-)π^(+)π^(+))=(1.90±0.08±0.09)%,where the first uncertainties are statistical and the second are *** find that the branching fraction of the decayΛ_(c)^(+)→nπ^(+)π^(0)is about one order of magnitude higher than that ofΛ_(c)^(+)→nπ^(+).

关键词： ∧_(c)^(+)baryon Branching fraction BESⅢdetector

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Search for hidden-charm tetraquark with strangeness in e^(+)e^(−)→k^(+)D_(s)^(∗−) D^(∗0 )+ c.c.

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Chinese Physics C 2023年第3期47卷 1-14页

作者：麦迪娜 m.N.Achasov P.Adlarson m.Albrecht R.Aliberti A.Amoroso 安美儒安琪白羽 O.Bakina R.Baldini Ferroli I.Balossino Y.Ban V.Batozskaya D.Becker k.Begzsuren N.Berger m.Bertani D.Bettoni F.Bianchi E.Bianco J.Bloms A.Bortone I.Boyko R.A.Briere A.Brueggemann 蔡浩蔡啸 A.Calcaterra 曹国富曹宁 S.A.Cetin 常劲帆常万玲车国荣 G.Chelkov 陈琛陈超陈刚陈和生陈玛丽陈申见陈少敏 T.Chen 陈旭荣 x.T.Chen 陈元柏陈卓俊成伟帅 S.k.Choi 初晓 G.Cibinetto F.Cossio 崔佳佳代洪亮代建平 A.Dbeyssi R.E.de Boer D.Dedovich 邓子艳 A.Denig I.Denysenko m.Destefanis F.De mori 丁勇丁逸董静董燎原董明义董翔杜书先段宗欢 P.Egorov 范玉兰方建房双世方文兴方易 R.Farinelli L.Fava F.Feldbauer G.Felici 封常青冯俊华 k Fischer m.Fritsch C.Fritzsch 傅成栋高涵高原宁高扬 S.Garbolino I.Garzia 葛潘婷葛振武耿聪 E.m.Gersabeck A Gilman k.Goetzen 龚丽龚文煊 W.Gradl m.Greco 谷立民顾旻皓顾运厅关春懿郭爱强郭立波郭如盼郭玉萍 A.Guskov 韩文颖郝喜庆 F.A.harris 何凯凯何康林 F.h.heinsius C.h.heinz 衡月昆 C.herold 侯国一侯颖锐侯治龙胡海明 J.F.hu 胡涛胡誉黄光顺黄凯旋黄麟钦黄性涛黄燕萍黄震 T.hussain N hüsken W.Imoehl m.Irshad J.Jackson S.Jaeger S.Janchiv E.Jang J.h.Jeong 纪全姬清平季晓斌季筱璐吉钰瑶贾泽坤蒋沛成姜赛赛江晓山 Y.Jiang 焦健斌焦铮金山金毅荆茂强 T.Johansson S.kabana N.kalantar-Nayestanaki 康晓琳康晓珅 R.kappert m.kavatsyuk 柯百谦 I.k.keshk A.khoukaz R.kiuchi R.kliemt L.koch O.B.kolcu B.kopf m.kuemmel m.kuessner A.kupsc W.kühn J.J.Lane J.S.Lange P.Larin A.Lavania L.Lavezzi 雷天天雷祚弘 h.Leithoff m.Lellmann T.Lenz 李聪李翠李春花李澄李德民李飞李刚李慧李贺李海波李惠静 h.N.Li J.Q.Li 李静舒李井文李科 L.J Li 李龙科李蕾李明浩李培荣李素娴栗帅迎李腾李卫东李卫国李旭红李晓玲李晓宇李彦谷李振轩李紫源梁畅梁浩梁昊梁勇飞梁羽铁廖广睿廖龙洲 J.Libby A.Limphirat 林创新林德旭 T.Lin 刘北江刘成刘春秀 D.Liu 刘福虎刘芳刘峰 G.m.Liu h.Liu 刘宏邦刘怀民刘欢欢刘汇慧刘建北刘佳俊刘晶译刘凯刘魁勇刘珂刘亮刘露刘美宏刘佩莲刘倩刘树彬刘桐刘维克刘卫民刘翔刘英刘玉斌刘振安刘智青娄辛丑卢飞翔吕海江吕军光陆小玲卢宇卢云鹏卢泽辉罗成林罗民兴罗涛罗小兰吕晓睿吕翌丰马凤才马海龙马连良马明明马秋梅马润秋马瑞廷马骁妍马尧 F.E.maas m.maggiora S.maldaner S.malde Q.A.malik A.mangoni 冒亚军毛泽普 S.marcello 孟召霞 J.G.messchendorp G.mezzadri h.m.ao 闵天觉 R.E.mitchell 莫晓虎 N.Yu.muchnoi Y.Nefedov F.Nerling I.B.Nikolaev 宁哲 S.Nisar 牛艳 S.L.Olsen 欧阳群 S.Pacetti 潘祥潘越 A.Pathak 裴宇鹏 m.Pelizaeus 彭海平 k.Peters 平加伦平荣刚 S.Plura S.Pogodin V.Prasad 齐法制齐航漆红荣祁鸣齐天钰钱森钱文斌钱圳乔从丰秦佳佳秦丽清覃潇平秦小帅秦中华邱进发屈三强 k Institute of high Energy Physics Beijing 100049China Beihang university Beijing 100191China beijing Institute of Petroch.m.caltechnology Beijing 102617China Boch.m.Ruhr-university D-44780 BochumGermany Carnegie mellon university PittsburghPennsylvania15213USA Central china Normal university Wuhan 430079China Central South university Changsha 410083China china Center of Advancedscience and technology Beijing 100190China china university of Geosciences Wuhan 430074China COmSATS university Islamabad LahoreCampusDefence RoadOff Raiwind Road54000 LahorePakistan Fudan university Shanghai 200433China G.I.Budker Institute of NuclearPhysics SB RAS(BINP) Novosibirsk 630090Russia GSI helmholtzcentre for heavy Ion Research Gmbh D-64291 DarmstadtGermany GuangxiNormal university Guilin 541004China Guangxi university Nanning 530004China hangzhou Normal university Hangzhou 310036China hebei university Baoding 071002China helmholtz Institute mainz Staudinger Weg 18D-55099 MainzGermany henan Normaluniversity 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 730000People's Republic of China Institute of Physics and technology Peace Avenue 54BUlaanbaatar 13330Mongolia Instituto de Alta Investigación Universidad de TarapacáCasilla 7DAricaChile Jilin Univers

We report a search for a heavier partner of the recently observed z_(cs)(3985)^(-) state,denoted as z_(cs)^('-),in the process e^(+)e^(−)→k^(+)D_(s)^(∗−) D^(∗0 )+ c.c.,based on e^(*)e^(-)collision data collected at the center-of-mass energies of √s=4.661,4.682 and 4.699 GeV with the BESIII *** z_(cs)^('-) is of interest as it is expected to be a candidate for a hidden-charm and open-strange tetraquark.A partial-reconstruction technique is used to isolate k^(+)recoil-mass spectra,which are probed for a potential contribution from z_(cs)^('-)→D_(s)^(∗−) D^(∗0 )+ *** find an excess of z_(cs)^('-)→D_(s)^(*-)-D^(*0)(c.c.)candidates with a significance of 2.1o,after considering systematic uncertainties,at a mass of(4123.5±0.7_(sat)±4.7_(syst.))meV/c^(2).As the data set is limited in size,the upper limits are evaluated at the 90%confidence level on the product of the Born cross sections(σ^(Borm))and the branching fraction(B)of z_(cs)^('-)→D_(s)^(*-)-D^(*0),under different assumptions of the z_(cs)^('-) mass from 4.120 to 4.140 meV and of the width from 10 to 50 meV at the three center-of-mass *** upper limits of σ^(Born).B are found to be at the level of O(1)pb at each *** data samples are needed to confirm the z_(cs)^('-) state and clarify its nature in the coming years.

关键词： electron-positron collision BESIl hadron spectroscopy tetraquark

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Search for the rare decay B^(0)→J/ψФ

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Chinese Physics C 2021年第4期45卷 47-60页

作者： R.Aaij C.Abellin Beteta T.Ackernley B.Adeva m.Adinolfi h.Afsharnial C.A.Aidala S.Aiola z.Ajaltouni S.Akar J.Albrecht F.Alessio m.Alexander A.Alfonso Albero z.Aliouche G.Alkhazov P.Alvarez Cartelle S.Amato Y.Amhis L.An L.Anderlini A.Andreianov m.Andreotti F.Archilli A.Artamonov m.Artuso k.Arzymatov E.Aslanides m.Atzeni B.Audurier S.Bachmann m.Bachmaver J.J.Back S.Baker P.Baladron Rodriguez V.Balagura W.Baldinit J.Baptista Leite R.J.Barlow S.Barsuk W.Barter m.Bartolini F.Baryshnikov J.m.Basels G.Bassi B.Batsukh A.Battig A.Bay m.Becker F.Bedeschis I.Bediaga A.Beiter V.Belavin S.Belin V.Bellee k.Belous I.Belov I.Belyaev G.Bencivenni E.Ben-haim A.Berezhnoy *** D.Berninghoff h.C.Bernstein C.Bertella E.Bertholet A.Bertolin C.Betancourt F.Betti m.O.Bettler Ia.Bezshyiko S.Bhasin J.Bh.m.L.Bian m.S.Bieker S.Bifani P.Billoir m.Birch F.C.R.Bishop A.Bizzeti m.Biorn m.P.Blago T.Blake F.Blanc S.Blusk D.Bobulska J.A.Boelhauve O.Boente Garcia T.Boettcher A.Boldyrev A.Bondar N.Bondar S.Borghi m.Borisyak.m.Borsato J.T.Borsuk S.A.Bouchiba T.J.V.Bowcock A.Boyer C.Bozzi m.J.Bradley S.Braun A.Brea Rodriguezs m.Brodski J.Brodzicka A.Brossa Gonzalo D.Brundu A.Buonaura C.Burr A.Burschee A.Butkevich J.S.Butter J.Buytaert W.Byczynski S.Cadeddu h.Cai R.Calabrese L.Calefice L.Calero Diaz S.Cali R.Calladine m.Calvi m.Calvo Gomez P.Camargo magalhaes A.Camboni P.Campana D.h.Campora Perez A.F.Campoverde Quezada S.Capelli L.Capriotti A.Carbonel G.Carboni R.Cardinale A.Cardini I.Carli P.Carniti L.Carus k.Carvalho Akiba A.Casais Vidal G.Casse m.Cattaneo G.Cavallero S.Celani J.Cerasoli A.J.Chadwick.m.G.Chapman m.Charles Ph.Charpentier G.Chatzikonstantinidis C.A.Chavez Barajas m.Chefdeville C.Chen S.Chen A.Chernov S.-G.Chitic V.Chobanova S.Cholak.m.Chrzaszcz A.Chubykin V.Chulikov P.Ciambrone m.F.Cicala x.Cid Vidal G.Ciezarek P.E.L.Clarke m.Clemencic h.V.Cliff J.Closier J.L.Cobbledick V.Coco J.A.B.Coelho J.Cogan E.Cogneras L.Cojocariu P.Collins T.Colombo L.Congedo A.Contu N.Cooke G.Coombs G.Corti C.m.Costa Sobral B.Couturier D.C.Craik J.Crkovska m.Cruz Centro Brasileiro de Pesquisas Fisicas(CBPF) Riode JaneiroBrazil Universidade Federal do Riode Janeiro(UFRJ) Riode JaneiroBrazil Center for high Energy Physics Tsinghua UniversityBeijingChina school of Physics State key Laboratory of Nuclear Physics and technology Peking UniversityBeijingChina university of Chinese Academy of sciences BeijingChina Institute Of high Energy Physics(IhEP) BejingChina Institute of Particle Physics Central China Normal UniversityWuhanHubeiChina Univ.Grenoble Alpes Univ.Savoie Mont BlancCNRSIN2P3-LAPPAnnecyFrance Universite Clermont Auvergne CNRS/IN2P3LPCClermont-FerrandFrance Aix marseille Univ CNRS/IN2P3CPPMMarseilleFrance Universitq Paris-Saclay CNRS/IN2P3IJCLabOrsayFrance LPNhE Sorbonne UniversiteParis Diderot Sorbonne Paris CiteCNRS/IN2P3ParisFrance I.Physikalisches Institut RWTH Aachen UniversityAachenGermany Fakultat Physik Technische Universitat DortmundDortmundGermany max-Planck-Institut fir kernphysik.m.Ik) HeidelbergGermany Physikalisches Institut Ruprecht-Karls-Universitat HeidelbergHeidelbergGermany school of Physics University College DublinDublinIreland INFN Sezione di Bari BariItaly INFN Sezione di Bologna BolognaItaly INFN Sezione di Ferrara FerraraItaly INFN Sezione di Firenze FirenzeItaly INFN Laboratori Nazionali di Frascati Frascatiltaly INFN Sezione di Genova GenovaItaly INFN Sezione di milano Bicocca Milanolaly INFN Sezione di milano MilanoItaly INFN Sezione di Cagliari Monserratoltaly Universita degli Studi di Padova Universita e INFNPadovaPadovaItaly INFN Sezione di Pisa PisaItaly INFN Sezione di Roma Tor Vergata RomaItaly INFN Sezione di Roma La Sapienza RomaItaly Nikhef National Institute for Subatomic Physics AmsterdamNetherlands Nikhef National Institute for Subatomic Physics and VU university Amsterdam AmsterdamNetherlands henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of sciences KrakowPoland AGh-university of science and technology Faculty of Physics and Applied Computer Science

A search for the rare decay B^(0)→J/ψФis performed using Pp collision data collected with the LhCb dete-ctor at centre-of-mass energies of 7,8 and 13 TeV,corresponding to an integrated luminosity of9 *** significant signal of the decay is observed and an upper limitof 1.1x 10^(-7)at 90%confidence level is set on the branching fraction.

关键词： B physics flavour physics rare decay ω-Фmixing branching fraction

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Search for the doubly heavy baryons Ωbc0 and Ξbc0 decaying to Λc+π- and Ξc+π-

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Chinese Physics C 2021年第9期45卷 14-25页

作者： R.Aaij C.Abellán Beteta T.Ackernley B.Adeva m.Adinolfi h.Afsharnia C.A.Aidala S.Aiola z.Ajaltouni S.Akar J.Albrecht F.Alessio m.Alexander A.Alfonso Albero z.Aliouche G.Alkhazov P.Alvarez Cartelle S.Amato Y.Amhis L.An L.Anderlini A.Andreianov m.Andreotti F.Archilli A.Artamonov m.Artuso k.Arzymatov E.Aslanides m.Atzeni B.Audurier S.Bachmann m.Bachmayer J.J.Back P.Baladron Rodriguez V.Balagura W.Baldini J.Baptista Leite R.J.Barlow S.Barsuk W.Barter m.Bartolini F.Baryshnikov J.m.Basels G.Bassi B.Batsukh A.Battig A.Bay m.Becker F.Bedeschi I.Bediaga A.Beiter V.Belavin S.Belin V.Bellee k.Belous I.Belov I.Belyaev G.Bencivenni E.Ben-haim A.Berezhnoy *** D.Berninghoff h.C.Bernstein C.Bertella A.Bertolin C.Betancourt F.Betti Ia.Bezshyiko S.Bhasin J.Bh.m.L.Bian m.S.Bieker S.Bifani P.Billoir m.Birch F.C.R.Bishop A.Bitadze A.Bizzeti m.Bj?rn m.P.Blago T.Blake F.Blanc S.Blusk D.Bobulska J.A.Boelhauve O.Boente Garcia T.Boettcher A.Boldyrev A.Bondar N.Bondar S.Borghi m.Borisyak.m.Borsato J.T.Borsuk S.A.Bouchiba T.J.V.Bowcock A.Boyer C.Bozzi m.J.Bradley S.Braun A.Brea Rodriguez m.Brodski J.Brodzicka A.Brossa Gonzalo D.Brundu A.Buonaura C.Burr A.Bursche A.Butkevich J.S.Butter J.Buytaert W.Byczynski S.Cadeddu h.Cai R.Calabrese L.Calefice L.Calero Diaz S.Cali R.Calladine m.Calvi m.Calvo Gomez P.Camargo magalhaes A.Camboni P.Campana A.F.Campoverde Quezada S.Capelli L.Capriotti A.Carbone G.Carboni R.Cardinale A.Cardini I.Carli P.Carniti L.Carus k.Carvalho Akiba A.Casais Vidal G.Casse m.Cattaneo G.Cavallero S.Celani J.Cerasoli A.J.Chadwick.m.G.Chapman m.Charles Ph.Charpentier G.Chatzikonstantinidis C.A.Chavez Barajas m.Chefdeville C.Chen S.Chen A.Chernov V.Chobanova S.Cholak.m.Chrzaszcz A.Chubykin V.Chulikov P.Ciambrone m.F.Cicala x.Cid Vidal G.Ciezarek P.E.L.Clarke m.Clemencic h.V.Cliff J.Closier J.L.Cobbledick V.Coco J.A.B.Coelho J.Cogan E.Cogneras L.Cojocariu P.Collins T.Colombo L.Congedo A.Contu N.Cooke G.Coombs G.Corti C.m.Costa Sobral B.Couturier D.C.Craik J.Crkovská m.Cruz Torres R.Currie C.L.Da Silva E.Dall'Occo J.Dalseno C.D'Amb university of Edinburgh horia hulubei National Institute of Physics and Nuclear Engineering INFN Sezione di Bari Università di Bari Los Alamos National Laboratory (LANL) Van Swinderen Institute university of Groningen Universiteit maastricht AGh-university of science and technology Faculty of Physics and Applied Computer science Université Clermont Auvergne Università di Cagliari Institute for Nuclear Research of the National Academy of sciences (kINR) school of Physics university College Dublin NSC kharkiv Institute of Physics and technology (NSC kIPT) INFN Sezione di Perugia STFC Rutherford Appleton Laboratory school of Physics and Astronomy monash university Novosibirsk State university CNRS/IN2P3 department of Physics and Astronomy Uppsala university Università di Genova school of Physics State key Laboratory of Nuclear Physics and technology Peking university National Center for Nuclear Research (NCBJ) Università di Roma Tor Vergata Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio) Universidade Federal do Triangulo mineiro (UFTm) Institute of Particle Physics LPC Central china Normal university hangzhou Institute for Advanced Study UCAS Instituto de Fisica Corpuscular Centro mixto Universidad de Valencia-CSIC Nikhef National Institute for Subatomic Physics and VU university Amsterdam National Research Tomsk Polytechnic university AGh-university of science and technology Faculty of Computer science Electronics and Telecommunications university of michigan Università di Siena Università di Padova Scuola Normale Superiore National Research Centre kurchatov Institute Università degli Studi di milano mSU-Iligan Institute of technology (mSU-IIT) Università di Firenze INFN Sezione di Roma La Sapienza Institut für Physik Universit?t Rostock INFN Sezione di milano Departamento de Fisica Universidad Nacional de Colombia Universit?t Bonn-helmholtz-Institut für Strahlen und kernphysik hanoi university of science Università di Pisa P.N. Lebedev Physical Institute Russian Academy of science (LPI RAS) Università

The first search for the doubly heavy Ωbc0baryon and a search for the Ξbc0baryon are performed using pp collision data collected via the LhCb experiment from 2016 to 2018 at a centre-of-mass energy of 13 TeV,corresponding to an integrated luminosity of 5.2 *** baryons are reconstructed via their decays to ∧c+π-andΞc+π-.No significant excess is found for invariant masses between 6700 and 7300 meV/c2,in a rapidity range from2.0 to 4.5 and a transverse momentum range from 2 to 20 meV/*** limits are set on the ratio of the Ωbc0andΞbc0production cross-section times the branching fraction to ∧c+π-（Ξc+π-） relative to that of the ∧b0（Ξb0） baryon,for different lifetime hypotheses,at 95% confidence *** upper limits range from 0.5×10-4to 2.5×10-4for theΩbc0→∧c+π-(Ξbc0→∧c+π-) decay,and from 1.4×10-3to 6.9×10-3for the Ωbc0→Ξc+π-(Ξbc0→Ξc+π-) decay,depending on the considered mass and lifetime of the Ωbc0(Ξbc0) baryon.

关键词： B physics quarkonium spectroscopy heavy quark production

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