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

查看全文 作　　者：[1]麦迪娜;[2,3]M.N.Achasov;[4]S.Ahmed;[5]M.Albrecht;[6,7]M.Alekseev;[6,7]A.Amoroso;[1]安芬芬;[8,9]安琪;[10]白羽;[11]O.Bakina;R.Baldini [12]Ferroli;[13]班勇;[14]K.Begzsuren;[15]D.W.Bennett;[16]J.V.Bennett;[17]N.Berger;[12]M.Bertani;[18]D.Bettoni;[6,7]F.Bianchi;[11]I.Boyko;[16]R.A.Briere;[19]蔡浩;[1,8]蔡啸;[20]O.Cakir;[12]A.Calcaterra;[1,21]曹国富;[22]S.A.Cetin;[7]J.Chai;[1,8]常劲帆;[1,21]W.L.Chang;[11,23,24]G.Chelkov;[1]陈刚;[1,21]陈和生;[1]陈江川;[1,8]陈玛丽;[25]陈平亮;[26]陈申见;[1,8]陈元柏;[7]成伟帅;[18]G.Cibinetto;[7]F.Cossio;[1,8]代洪亮;[27,28]代建平;[4]A.Dbeyssi;[11]D.Dedovich;[1]邓子艳;[17]A.Denig;[11]I.Denysenko;[6,7]M.Destefanis;F.De [6,7]Mori;[29]丁勇;[30]董超;[1,8]董静;[1,21]董燎原;[1]董明义;[26]豆正磊;[31]杜书先;[1]段鹏飞;[32]范荆州;[1,8]方建;[1,21]房双世;[1]方易;[18,33]R.Farinelli;[7,34]L.Fava;[17]S.Fegan;[5]F.Feldbauer;[12]G.Felici;[8,9]封常青;[5]M.Fritsch;[1]傅成栋;[1]付颖;[1]高清;[8,9]高鑫磊;[32]高原宁;[35]高勇贵;[8,9]高榛;[17]B.Garillon;[18]I.Garzia;[36]A.Gilman;[37]K.Goetzen;[30]龚丽;[1,8]龚文煊;[17]W.Gradl;[6,7]M.Greco;[26]谷立民;[1,8]顾旻皓;[38]顾运厅;[1]郭爱强;[39]郭立波;[1,21]郭如盼;[17]郭玉萍;[11]A.Guskov;[40]Z.Haddadi;[19]韩爽;[41]郝喜庆;[42]F.A.Harris;[1,21]何康林;[5]F.H.Heinsius;[5]T.Held;[1]衡月昆;[1]侯治龙;[1,21]胡海明;[27,28]胡继峰;[1]胡涛;[1]胡誉;[8,9]黄光顺;[41]黄金书;[43]黄性涛;[26]黄晓忠;[29]黄智玲;[44]T.Hussain;[45]N.Hüsken;W.Ikegami [46]Andersson;M [8,9]Irshad;[1]纪全;[41]姬清平;[1,21]季晓斌;[1,8]季筱璐;[1]江晓山;[30]蒋兴雨;[43]焦健斌;[47]焦铮;[1]金大鹏;[26]金山;[48]金毅;[46]T.Johansson;[36]A.Julin;N.Kalantar-[40]Nayestanaki;[30]康晓珅;[40]M.Kavatsyuk;[1]柯百谦;[5]I.K.Keshk;[8,9]T.Khan;[45]A.Khoukaz;[17]P.Kiese;[1]R.Kiuchi;[37]R.Kliemt;[49]L.Koch;[22,50]O.B.Kolcu;[5]B.Kopf;[42]M.Kornicer;[5]M.Kuemmel;[5]M.Kuessner;[46]A.Kupsc;[1]M.Kurth;[49]W.Kühn;[49]J.S.Lange;[4]P.Larin;[1,7]L.Lavezzi;[5]S.Leiber;[17]H.Leithoff;[46]李翠;[8,9]李澄;[31]李德民;[1,8]李飞;[13]李峰云;[1]李刚;[1,21]李海波;[1,21]李惠静;[1]李家才;[51]李井文;[1]李科;[52]李蕾;[8,9]李佩莲;[21,53]李培荣;[43]李启云;[43]李腾;[1,21]李卫东;[1]李卫国;[43]李晓玲;[1,8]李小男;[30]李学潜;[54]李志兵;[8,9]梁昊;[55]梁勇飞;[49]梁羽铁;[56]廖广睿;[1,21]廖龙洲;[57]J.Libby;[54]林创新;[4]林德旭;[27,28]刘冰;[1]刘北江;[1]刘春秀;[8,9]刘栋;[27,28]刘殿宇;[58]刘福虎;[1]刘芳;[35]刘峰;[38]刘宏邦;[10]刘恒君;[1,21]刘怀民;[1]刘欢欢;[59]刘汇慧;[8,9]刘建北;[1,21]刘晶译;[32]刘凯;[29]刘魁勇;[35]刘珂;[21]刘倩;[8,9]刘树彬;[60]刘翔;[30]刘玉斌;[1]刘振安;[17]刘智青;[13]龙云飞;[1]娄辛丑;[47]吕海江;[1,21]陆嘉达;[1,8]吕军光;[1]卢宇;[1,8]卢云鹏;[39]罗成林;[61]罗民兴;[62,63]罗涛;[1,8]罗小兰;[7]S.Lusso;[21]吕晓睿;[29]马凤才;[1]马海龙;[43]马连良;[1,21]马明明;[1]马秋梅;[30]马旭宁;[1,21]马新鑫;[1,8]马骁妍;[43]马玉明;[4]F.E.Maas;[6,7]M.Maggiora;[17]S.Maldaner;[44]Q.A.Malik;[64]A.Mangoni;[13]冒亚军;[1]毛泽普;[6,7]S.Marcello;[48]孟召霞;[40]J.G.Messchendorp;[18]G.Mezzadri;[1,8]闵建;[26]闵天觉;[15]R.E.Mitchell;[1]莫晓虎;[35]莫玉俊;C.Morales [4]Morales;[2,3]N.Yu.Muchnoi;[36]H.Muramatsu;[5]A.Mustafa;[37,65]S.Nakhoul;[11]Y.Nefedov;[37,65]F.Nerling;[2,3]I.B.Nikolaev;[1,8]宁哲;[66,67]S.Nisar;[1,8]牛顺利;[68,69]马鹏;[1]欧阳群;[64]S.Pacetti;[8,9]潘越;[46]M.Papenbrock;[12]P.Patteri;[5]M.Pelizaeus;[6,7]J.Pellegrino;[8,9]彭海平;[37,65]K.Peters;[46]J.Pettersson;[39]平加伦;[1,21]平荣刚;[5]A.Pitka;[36]R.Poling;[8,9]V.Prasad;[70]漆红荣;[26]祁鸣;[70]齐天钰;[1,8]钱森;[21]乔从丰;[19]覃拈;[5]X.S.Qin;[1,8]秦中华;[1]邱进发;[30]屈三强;[44,71]K.H.Rashid;[17]C.F.Redmer;[5]M.Richter;[17]M.Ripka;[7]A.Rivetti;[7]M.Rolo;[1,21]荣刚;[4]Ch.Rosner;[45]M.Rump;[11,72]A.Sarantsev;[33]M.Savrié;[46]K.Schoenning;[73]单葳;[8,9]单心钰;[8,9]邵明;[70]沈成平;[30]沈培迅;[1,21]沈肖雁;[1]盛华义;[1,8]史欣;[43]宋娇娇;[43]W.M.Song;[1]宋欣颖;[6,7]S.Sosio;[5]C.Sowa;[6,7]S.Spataro;[1]孙功星;[41]孙俊峰;[19]孙亮;[1,21]孙胜森;[1]孙新华;[8,9]孙勇杰;[8,9]孙艳坤;[1]孙永昭;[1,8]孙志嘉;[1]孙振田;[8,9]谭雅星;[55]唐昌建;[1]唐光毅;[1]唐晓;[74]I.Tapan;[40]M.Tiemens;[14]B.Tsednee;[75]I.Uman;[1]王斌;[21]王滨龙;[26]王成伟;[13]王大勇;[21]王丹;[1,8]王科;[1]王亮亮;[1]王灵淑;[43]王萌;[1,21]王蒙;[1]王平;[1]王佩良;[8,9]王维平;[1]王雄飞;[8,9]王越;[1]王贻芳;[1,8]王铮;[1,8]王志刚;[1]王至勇;[1,21]王宗源;[5]T.Weber;[56]魏代会;[17]P.Weidenkaff;[1]文硕频;[5]U.Wiedner;[46]M.Wolke;[1]伍灵慧;[1,21]吴连近;[1,8]吴智;[8,9]夏磊;[43]X.Xia;[76]夏宇;[1]肖栋;[1,21]肖言佳;[39]肖振军;[1,8]谢宇广;[35]谢跃红;[1,21]熊习安;[1,8]修青磊;[1]许国发;[1,21]徐静静;[1]徐雷;[77]徐庆君;[21]徐庆年;[51]徐新平;[25]严芳;[6,7]严亮;[8,9]鄢文标;[70]闫文成;[76]颜永红;[27,28]杨海军;[1]杨洪勋;[19]杨柳;[8,9]R.X.Yang;[1,21]杨双莉;[26]杨友华;[56]杨永栩;[1,21]杨翊凡;[76]杨子倩;[1,8]叶梅;[53]叶铭汉;[1]殷俊昊;[54]尤郑昀;[1]俞伯祥;[30]喻纯旭;[76]俞洁晟;[1,21]苑长征;[1]袁野;[22,78]A.Yuncu;[44]A.A.Zafar;[76]曾云;[1]张丙新;[1,8]张炳云;[1]张长春;[1]张达华;[54]张宏浩;[1,8]章红宇;[1,21]张晋;[79]张杰磊;[5]J.Q.Zhang;[1]张家文;[1]张建勇;[1,21]张景芝;[1,21]张坤;[32]张磊;[26]张思凡;[27,28]张天骄;[43]张学尧;[8,9]张言;[1,8]张银鸿;[8,9]张亚腾;[1]张洋;[1]张瑶;[21]张宇;[35]张正好;[9]张子平;[19]张振宇;[1]赵光;[1,8]赵京伟;[1,21]赵静宜;[1,8]赵京周;[8,9]赵雷;[1]赵玲;[30]赵明刚;[1]赵强;[31]赵书俊;[1]赵天池;[1,8]赵豫斌;[8,9]赵政国;[11,23]A.Zhemchugov;[25]郑波;[1,8]郑建平;[43]郑文静;[21]郑阳恒;[39]钟彬;[1,8]周莉;[1,21]周巧;[19]周详;[8,9]周晓康;[8,9]周小蓉;[1]周兴玉;[76]周晓宇;[76]周旭;[1,21]朱傲男;[30]朱江;[54]朱江;[1]朱凯;[1]朱科军;[1]朱帅;[80]朱世海;[32]朱相雷;[8,9]朱莹春;[1,21]朱永生;[1,21]朱自安;[1,8]庄建;[1]邹冰松;[1]邹佳恒 机构地区：[1]Institute of High Energy Physics;[2]G.I.Budker Institute of Nuclear Physics SB RAS(BINP);[3]the Novosibirsk State University;[4]Helmholtz Institute Mainz;[5]Bochum Ruhr-University;[6]University of Turin;[7]INFN;[8]State Key Laboratory of Particle Detection and Electronics;[9]University of Science and Technology of China;[10]Southeast University;[11]Joint Institute for Nuclear Research;[12]INFN Laboratori Nazionali di Frascati;[13]Peking University;[14]Institute of Physics and Technology;[15]Indiana University,Bloomington;[16]Carnegie Mellon University;[17]Johannes Gutenberg University of Mainz;[18]INFN Sezione di Ferrara;[19]Wuhan University;[20]Ankara University;[21]University of Chinese Academy of Sciences;[22]Istanbul Bilgi University;[23]the Moscow Institute of Physics and Technology;[24]the Functional Electronics Laboratory,Tomsk State University;[25]University of South China;[26]Nanjing University;[27]Shanghai Jiao Tong University;[28]Key Laboratory for Particle Physics,Astrophysics and Cosmology,Ministry of Education,Shanghai Key Laboratory for Particle Physics and Cosmology,Institute of Nuclear and Particle Physics;[29]Liaoning University;[30]Nankai University;[31]Zhengzhou University;[32]Tsinghua University;[33]University of Ferrara;[34]University of Eastern Piedmont;[35]Central China Normal University;[36]University of Minnesota,Minneapolis;[37]GSI Helmholtzcentre for Heavy Ion Research GmbH;[38]Guangxi University;[39]Nanjing Normal University;[40]KVI-CART,University of Groningen;[41]Henan Normal University;[42]University of Hawaii,Honolulu;[43]Shandong University;[44]University of the Punjab;[45]University of Muenster;[46]Uppsala University;[47]Huangshan College;[48]University of Jinan;[49]Justus-Liebig-Universitaet Giessen,II.Physikalisches Institut;[50]Istanbul Arel University;[51]Soochow University;[52]Beijing Institute of Petrochemical Technology;[53]China Center of Advanced Science and Technology;[54]Sun Yat-Sen University;[55]Sichuan University;[56]Guangxi Normal University;[57]Indian Institute of Technology Madras;[58]Shanxi University;[59]Henan University of Science and Technology;[60]Lanzhou University;[61]Zhejiang University;[62]Fudan University;[63]Key Laboratory of Nuclear Physics and Ion-beam Application(MOE)and Institute of Modern Physics,Fudan University;[64]INFN and University of Perugia;[65]Goethe University Frankfurt;[66]COMSATS Institute of Information Technology;[67]Harvard University,Department of Physics;[68]Seoul National University;[69]Center for Underground Physics,Institute for Basic Science;[70]Beihang University;[71]Government College Women University;[72]the NRC'Kurchatov Institute',PNPI;[73]Hunan Normal University;[74]Uludag University;[75]Near East University;[76]Hunan University;[77]Hangzhou Normal University;[78]Bogazici University;[79]Xinyang Normal University;[80]University of Science and Technology Liaoning 出　　处：《Chinese Physics C》索引2019年第43卷第8期,共9页 基　　金：Supported in part by National Key Basic Research Program of China(2015CB856700);National Natural Science Foundation of China(NSFC)(11235011,11275266,11335008,11425524,11625523,11635010);the Chinese Academy of Sciences(CAS) Large-Scale Scientific Facility Program;the CAS Center for Excellence in Particle Physics(CCEPP);Joint Large-Scale Scientific Facility Funds of the NSFC and CAS(U1332201,U1532257,U1532258);CAS(KJCX2-YW-N29,KJCX2-YW-N45,QYZDJ-SSW-SLH003);100 Talents Program of CAS;National 1000 Talents Program of China;INPAC and Shanghai Key Laboratory for Particle Physics and Cosmology;German Research Foundation DFG(Collaborative Research Center CRC 1044,FOR 2359);Istituto Nazionale di Fisica Nucleare,Italy;Koninklijke Nederlandse Akademie van Wetenschappen(KNAW)(530-4CDP03);Ministry of Development of Turkey(DPT2006K-120470);National Science and Technology fund;The Swedish Research Council;U.S. Department of Energy under(DE-FG02-05ER41374,DE-SC-0010118,DE-SC-0010504,DE-SC-0012069);University of Groningen(RuG);the Helmholtzzentrum fuer Schwerionenforschung GmbH(GSI),Darmstadt;WCU Program of National Research Foundation of Korea(R32-2008-000-10155-0) 摘　　要：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 collider. We find evidence for the decays ∧^+→∑^+η and ∑^+η' and with statistical significance of and , respectively. Normalizing to the reference decays ∧^+→∑^+π^0 and ∑^+ω, we obtain the ratios of the branching fractions B(∧C^+→∑^+η)/V(∧^→∑^+π^0)and B(∧C^+→∑^+η)/B(∧C^+→∑^+ω)to be and , respectively. The upper limits at the 90% confidence level are set to be B(∧C^→∑^+η)/V(∧^+→∑^+π^0)<0.58 and B(∧C^+→∑^+η)/B(∧C^+→∑^+ω)<1.2. Using BESIII measurements of the branching fractions of the reference decays, we determine B(∧C^+→∑^+η)=(0.41±019±0.05)%(<0.68%) and B(∧C^+→∑^+η)=(1.34+0.53+0.19)%(<1.9%). Here, the first uncertainties are statistical and the second systematic. The 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