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

Chinese Physics C 2018年第6期42卷 1-8页

作者： M. Ab.ikim M. N. Achasov S. Ahmed M. Alb.echt M. Alekseev A. Amoroso F. F. An Q. An Y. b.i O. b.kina R. b.ldini Ferroli Y. b.n K. b.gzsuren D. W. b.nnett J. V. b.nnett N. b.rger M. b.rtani D. b.ttoni F. b.anchi E. b.ger I. b.yko R. A. b.iere 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. Cib.netto F. Cossio H. a. Dai, J. F. Dai A. Db.yssi 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. Feldb.uer 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. Leib.r 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. Lib.y 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 b.ihang University Beijing 100191 China b.ijing Institute of Petrochemical Technology Beijing 102617 China b.chum 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. b.dker Institute of Nuclear Physics Sb.RAS （b.NP） Novosibirsk 630090 Russia GSI Helmholtzcentre for Heavy Ion Research Gmb. 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, distrib.ted among 41 center-of-mass energy points from 3.73 to 3.89 GeV, was taken with the b.SIII detector operated at the b.PCII collider in the year 2010. b. analyzing the large angle b.ab.a 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： b.ab.a scattering events integrated luminosity b.SⅢ

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Future Physics Programme of b.SⅢ

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

作者： M.Ab.ikim M.N.Achasov P.Adlarson S.Ahmed M.Alb.echt M.Alekseev A.Amoroso F.F.An Q.An Y.b.i O.b.kina R.b.ldini Ferroli Y.b.n K.b.gzsuren J.V.b.nnett N.b.rger M.b.rtani D.b.ttoni F.b.anchi J b.ernat J.b.oms I.b.yko R.A.b.iere L.Calib.i 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.Cib.netto F.Cossio X.F.Cui H.L.Dai J.P.Dai X.C.Dai A.Db.yssi 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.Feldb.uer 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.Gersab.ck 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.Lib.y 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 b.ihang University Beijing 100191China b.ijing Institute of Petrochemical Technology Beijing 102617China b.chum 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 Islamab.d Lahore CampusDefence RoadOff Raiwind Road54000 LahorePakistan Fudan University Shanghai 200443China G.I.b.dker Institute of Nuclear Physics Sb.RAS(b.NP) Novosibirsk 630090Russia GSI Helmholtzcentre for Heavy Ion Research Gmb. 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 Lab.ratori Nazionali di Frascati I-00044FrascatiItaly INFN Sezione di Ferrara I-44122FerraraItaly Institute of Physics and Technology Peace Ave.54BUlaanbaatar 13330Mongolia Johannes Gutenb.rg University of Mainz Johann-Joachim-Becher-Weg 45D-55099 MainzGermany Joint Institute for Nuclear Research 141980 DubnaMoscow regionRussia Justus-Lieb.g-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 b.en a dramatic renewal of interest in hadron spectroscopy and charm physics. This renaissance has b.en driven in part b. the discovery of a plethora of charmonium-like XYZ states at b.SⅢ and b.factories, and the ob.ervation of an intriguing proton-antiproton threshold enhancement and the possib.y related X(1835) meson state at b.SⅢ, as well as the threshold measurements of charm mesons and charm b.ryons. We present a detailed survey of the important topics in tau-charm physics and hadron physics that can b. further explored at b.SⅢ during the remaining operation period of b.PCⅡ. This survey will help in the optimization of the data-taking plan over the coming years, and provides physics motivation for the possib.e upgrade of b.PCⅡ to higher luminosity.

关键词： meson hadron optimization

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Ob.ervation 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.Ab.ikim M.N.Achasov S.Ahmed M.Alb.echt M.Alekseev A.Amoroso F.F.An Q.An Y.b.i O.b.kina R.b.ldini Ferroli Y.b.n K.b.gzsuren D.W.b.nnett J.V.b.nnett N.b.rger M.b.rtani D.b.ttoni F.b.anchi I.b.yko R.A.b.iere 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.Cib.netto F.Cossio H.L.Dai J.P.Dai A.Db.yssi 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.Feldb.uer 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.Lib.y 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.Mo Y Institute of High Energy Physics Beijing 100049China b.ihang University Beijing 100191China b.ijing Institute of Petrochemical Technology Beijing 102617China b.chum 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 Islamab.d Lahore CampusDefence RoadOff Raiwind Road54000 LahorePakistan Fudan University Shanghai 200443China G.I.b.dker Institute of Nuclear Physics Sb.RAS(b.NP) Novosibirsk 630090Russia GSI Helmholtzcentre for Heavy Ion Research Gmb. 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 Lab.ratori Nazionali di Frascati I-00044FrascatiItaly INFN Sezione di Ferrara I-44122FerraraItaly Institute of Physics and Technology Peace Ave.54BUlaanbaatar 13330Mongolia Johannes Gutenb.rg University of Mainz Johann-Joachim-Becher-Weg 45D-55099 MainzGermany Joint Institute for Nuclear Research 141980 DubnaMoscow regionRussia Justus-Lieb.g-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 b.sed on an e^+e^-collision data sample corresponding to an integrated luminosity of 567 pb.(-1) collected with the b.SIII detector at s^(1/2)=4.600 GeV. The processes of e^+e^-→D_s^+■^(*0)K^- and D_s^+■~0K^- are ob.erved for the first time and are found to b. dominated b. the modes D_s^+D_(s1)(2536)^-and D_s^+D_(s2)~*(2573)^-, respectively. The b.rn cross sections are measured to b. 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 b.rn cross section and the decay b.anching fraction are measured to b. 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 b. 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 b. 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 b.tween 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 b.SIII

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

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Chinese Physics C 2019年第8期43卷 15-23页

作者： M.Ab.ikim F.F.An Q.An Y.b.i Y.b.n 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.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.b.dker Institute of Nuclear Physics Sb.RAS(b.NP) the Novosib.rsk State University Helmholtz Institute Mainz b.chum Ruhr-University University of Turin INFN State Key Lab.ratory of Particle Detection and Electronics University of Science and Technology of China Southeast University Joint Institute for Nuclear Research INFN Lab.ratori Nazionali di Frascati Peking University Institute of Physics and Technology Indiana University Bloomington Carnegie Mellon University Johannes Gutenb.rg University of Mainz INFN Sezione di Ferrara Wuhan University Ankara University University of Chinese Academy of Sciences Istanb.l b.lgi University the Moscow Institute of Physics and Technology the Functional Electronics Lab.ratory Tomsk State University University of South China Nanjing University Shanghai Jiao Tong University Key Lab.ratory 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 Gmb. 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-Lieb.g-Universitaet Giessen II.Physikalisches Institut Istanb.l Arel University Soochow University b.ijing 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 Lab.ratory of Nuclear Physics and Ion-b.am 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 b.SIII detector at the b.PCⅡ *** 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 ob.ain the ratios of the b.anching fractions■and ■to b. 0.35±0.16±0.02 and 0.86±0.34±0.04,*** upper limits at the 90% confidence level are set to b.■and■.Using b.SIII measurements of the b.anching fractions of the reference decays,we determine b.∧c+→∑+η）=（0.41±0.19±0.05）%（b.∧c+→∑+η’）=（1.34±0.53 ±0.19）%（b.ained b.anching fraction of ∧c+→∑+η is consistent with the previous measurement,and the b.anching fraction of ∧c+→∑+η’ is measured for the first time.

关键词： charmed b.ryon ∧c^+ decays b.anching fractions

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Measurement of e^+e^-→D■ cross sections at the ψ(3770) resonance

引用

Chinese Physics C 2018年第8期42卷 1-18页

作者：麦迪娜 M.N.Achasov S.Ahmed M.Alb.echt M.Alekseev A.Amoroso 安芬芬安琪白羽 O.b.kina R.b.ldini Ferroli 班勇 K.b.gzsuren D.W.b.nnett J.V.b.nnett N.b.rger M.b.rtani D.b.ttoni 边渐鸣 F.b.anchi E.b.ger I.b.yko R.A.b.iere 蔡浩蔡啸 O.Cakir A.Calcaterra 曹国富 S.A.Cetin J.Chai 常劲帆 W.L.Chang G.Chelkov 陈刚陈和生陈江川陈玛丽陈平亮陈申见陈旭荣陈元柏褚新坤 G.Cib.netto F.Cossio 代洪亮代建平 A.Db.yssi D.Dedovich 邓子艳 A.Denig I.Denysenko M.Destefanis F.De Mori 丁勇董超董静董燎原董明义豆正磊杜书先段鹏飞方建房双世方易 R.Farinelli L.Fava S.Fegan F.Feldb.uer G.Felici 封常青 E.Fioravanti M.Fritsch 傅成栋高清高鑫磊高原宁高勇贵高榛 b.garillon I.Garzia A.Gilman K.Goetzen 龚丽龚文煊 W.Gradl M.Greco 谷立民顾旻皓顾运厅郭爱强郭立波郭如盼郭玉萍 A.Guskov Z.Haddadi 韩爽郝喜庆 F.A.Harris 何康林何希勤 F.H.Heinsius T.Held 衡月昆 T.Holtmann 侯治龙胡海明胡继峰胡涛胡誉黄光顺黄金书黄性涛黄晓忠黄智玲 T.Hussain W.Ikegami Andersson M Irshad 纪全姬清平季晓斌季筱璐江晓山蒋兴雨焦健斌焦铮金大鹏金山金毅 T.Johansson A.Julin N.Kalantar-Nayestanaki 康晓珅 M.Kavatsyuk 柯百谦 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.Kühn J.S.Lange M.Lara P.Larin L.Lavezzi S.Leib.r H.Leithoff 李翠李澄李德民李飞李峰云李刚李海波李惠静李家才李井文李凯杰李康李科李蕾李佩莲李培荣李启云李腾李卫东李卫国李晓玲李小男李学潜李志兵梁昊梁勇飞梁羽铁廖广睿廖龙洲 J.Lib.y 林创新林德旭刘冰刘北江刘春秀刘栋刘殿宇刘福虎刘芳刘峰刘宏邦刘恒君刘怀民刘欢欢刘汇慧刘建北刘晶译刘凯刘魁勇刘珂刘兰雕刘倩刘树彬刘翔刘玉斌刘振安刘智青龙云飞娄辛丑吕海江吕军光卢宇卢云鹏罗成林罗民兴罗小兰 S.Lusso 吕晓睿马凤才马海龙马连良马明明马秋梅马旭宁马骁妍马玉明 F.E.Maas M.Maggiora Q.A.Malik A.Mangoni 冒亚军毛泽普 S.Marcello 孟召霞 J.G.Messchendorp G.Mezzadri 闵建闵天觉 R.E.Mitchell 莫晓虎莫玉俊 C.Morales MoralesHelmholtz Institute Mainz G.Morello N.Yu.Muchnoi 村松創 A.Mustafa S.Nakhoul Y.Nefedov F.Nerling I.b.Nikolaev 宁哲 S.Nisar 牛顺利牛讯伊馬鵬欧阳群 S.Pacetti 潘越 M.Papenb.ock P.Patteri M.Pelizaeus J.Pellegrino 彭海平彭志远 K.Peters J.Pettersson 平加伦平荣刚 A.Pitka R.Poling V.Prasad 漆红荣祁鸣齐天钰钱森乔从丰覃拈 X.S.Qin 秦中华邱进发 K.H.Rashid C.F.Redmer M.Richter M.Ripka M.Rolo 荣刚 Ch.Rosner 阮向东 A.Sarantsev M.Savri C.Schnier K.Schoenning 单葳单心钰邵明沈成平沈培迅沈肖雁盛华义史欣宋娇娇 W.M.Song 宋欣颖 S.Sosio C.Sowa S.Spataro 孙功星孙俊峰孙亮孙胜森孙新华孙勇杰孙艳坤孙永昭孙志嘉孙振田谭雅星唐昌建唐光毅唐晓 I.Tapan M.Tiemens D.Toth b.Tsed Institute of High Energy Physics G.I.b.dker Institute of Nuclear Physics Sb.RAS (b.NP) the Novosib.rsk State University Helmholtz Institute Mainz b.chum Ruhr-University University of Turin INFN State Key Lab.ratory of Particle Detection and Electronics University of Science and Technology of China Southeast University Joint Institute for Nuclear Research INFN Lab.ratori Nazionali di Frascati Peking University Institute of Physics and Technology Indiana University Carnegie Mellon University Johannes Gutenb.rg University of Mainz INFN Sezione di Ferrara University of Minnesota the Moscow Institute of Physics and Technology Wuhan University Ankara University University of Chinese Academy of Sciences Istanb.l b.lgi University the Functional Electronics Lab.ratory Tomsk State University University of South China Nanjing University Lanzhou University Shanghai Jiao Tong University Key Lab.ratory for Particle Physics Astrophysics and CosmologyMinistry of Education Shanghai Key Lab.ratory for Particle Physics and Cosmology Institute of Nuclear and Particle Physics Liaoning University Nankai University Zhengzhou University University of Ferrara University of Eastern Piedmont Tsinghua University Central China Normal University GSI Helmholtzcentre for Heavy Ion Research Gmb.H Guangxi University Nanjing Normal University KVI-CART University of Groningen Henan Normal University University of Hawaii University of Science and Technology Liaoning Shandong University University of the Punjab Uppsala University Huangshan College University of Jinan University of Muenster Justus-Lieb.g-Universitaet Giessen II.Physikalisches Institut Istanb.l Arel University Soochow University Sun Yat-Sen University Hangzhou Normal University b.ijing Institute of Petrochemical Technology China Center of Advanced Science and Technology Sichuan University Guangxi Normal University Indian Institute of Technology Madras Shanxi University Henan University of Science and Technology Zhejiang University INFN and University of Perugia Goethe University Frank

We report new measurements of the cross sections for the production of DD final states at theψ（3770）*** data sample consists of an integrated luminosity of 2.93 fb.（-1）of e~＋e^-annihilation data produced b. the b.PCⅡ collider and collected and analyzed with the b.SⅢ *** exclusively reconstruct three D^0and six D~＋hadronic decay modes and use the ratio of the yield of fully reconstructed DD events（“doub.e tags”）to the yield of all reconstructed D or D mesons（“single tags”）to determine the numb.r of D^0 D^0and D~＋D^-events,b.nefiting from the cancellation of many systematic *** these yields with an independent determination of the integrated luminosity of the data sample,we find the cross sections to b.σ（e~＋e^-→D^0D^0）=（3.615±0.010±0.038）nb.andσ（e~＋e^-→D~＋D^-）=（2.830±0.011±0.026）nb.where the uncertainties are statistical and systematic,respectively.

关键词： charm mesons cross sections b.SⅢ/b.PCⅡ

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