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

查看全文 作　　者：[1]麦迪娜;[12,86]M.N.Achasov;[78]P.Adlarson;[4]M.Albrecht;[36]R.Aliberti;[75,77]A.Amoroso;[40]安美儒;[72,58]安琪;[57]白羽;[37,8]O.Bakina;R.Baldini [27]Ferroli;[30]I.Balossino;[47,91]Y.Ban;[1,45]V.Batozskaya;[36]D.Becker;[33]K.Begzsuren;[36]N.Berger;[27]M.Bertani;[30]D.Bettoni;[75,77]F.Bianchi;[75,77]E.Bianco;[69]J.Bloms;[75,77]A.Bortone;[37]I.Boyko;[5]R.A.Briere;[69]A.Brueggemann;[79]蔡浩;[1,58]蔡啸;[27]A.Calcaterra;[1,64]曹国富;[1,64]曹宁;[62]S.A.Cetin;[1,58]常劲帆;[1,64]常万玲;[44]车国荣;[37,85]G.Chelkov;[44]陈琛;[55]陈超;[1]陈刚;[1,64]陈和生;[1,58,64]陈玛丽;[43]陈申见;[61]陈少敏;[1,64]T.Chen;[32,64]陈旭荣;[1,64]X.T.Chen;[1,58]陈元柏;[24,92]陈卓俊;[77]成伟帅;[55]S.K.Choi;[44]初晓;[30]G.Cibinetto;[77]F.Cossio;[50]崔佳佳;[1,58]代洪亮;[82]代建平;[18]A.Dbeyssi;R.E.de [4]Boer;[37]D.Dedovich;[1]邓子艳;[36]A.Denig;[37]I.Denysenko;[75,77]M.Destefanis;F.De [75]Mori;[41]丁勇;[35]丁逸;[1,58]董静;[1,64]董燎原;[1,58,64]董明义;[79]董翔;[84]杜书先;[43]段宗欢;[38,85]P.Egorov;[79]范玉兰;[1,58]方建;[1,64]房双世;[1]方文兴;[1]方易;[30]R.Farinelli;[5,76,77]L.Fava;[4]F.Feldbauer;[27]G.Felici;[72,58]封常青;[59]冯俊华;K [70]Fischer;[4]M.Fritsch;[69]C.Fritzsch;[1]傅成栋;[64]高涵;[47,91]高原宁;[72,58]高扬;[77]S.Garbolino;[30]I.Garzia;[79]葛潘婷;[43]葛振武;[59]耿聪;[68]E.M.Gersabeck;A [70]Gilman;[13]K.Goetzen;[41]龚丽;[1,58]龚文煊;[36]W.Gradl;[75,77]M.Greco;[43]谷立民;[1,58]顾旻皓;[15]顾运厅;[1,64]关春懿;[32,64]郭爱强;[42]郭立波;[49]郭如盼;[1,90]郭玉萍;[37,85]A.Guskov;[40]韩文颖;[19]郝喜庆;[66]F.A.Harris;[55]何凯凯;[1,64]何康林;[4]F.H.Heinsius;[36]C.H.Heinz;[1,58,64]衡月昆;[60]C.Herold;[1,64]侯国一;[64]侯颖锐;[1]侯治龙;[1,64]胡海明;[56,93]J.F.Hu;[1,58,64]胡涛;[1]胡誉;[72,58]黄光顺;[59]黄凯旋;[32,64]黄麟钦;[50]黄性涛;[1]黄燕萍;[47,91]黄震;[74]T.Hussain;N [26,36]Hüsken;[26]W.Imoehl;[72,58]M.Irshad;[26]J.Jackson;[4]S.Jaeger;[33]S.Janchiv;[55]E.Jang;[55]J.H.Jeong;[1]纪全;[19]姬清平;[1,64]季晓斌;[1,58]季筱璐;[50]吉钰瑶;[72,58]贾泽坤;[47,91]蒋沛成;[40]姜赛赛;[1,58,64]江晓山;[64]Y.Jiang;[50]焦健斌;[1]焦铮;[43]金山;[67]金毅;[1,64]荆茂强;[78]T.Johansson;[34]S.Kabana;N.Kalantar-[65]Nayestanaki;[9]康晓琳;[41]康晓珅;[65]R.Kappert;[65]M.Kavatsyuk;[84]柯百谦;[4]I.K.Keshk;[69]A.Khoukaz;[1]R.Kiuchi;[3]R.Kliemt;[38]L.Koch;[62]O.B.Kolcu;[4]B.Kopf;[4]M.Kuemmel;[4]M.Kuessner;[45,78]A.Kupsc;[38]W.Kühn;[68]J.J.Lane;[38]J.S.Lange;[18]P.Larin;[25]A.Lavania;[75,77]L.Lavezzi;[72,95]雷天天;[72,58]雷祚弘;[36]H.Leithoff;[36]M.Lellmann;[36]T.Lenz;[44]李聪;[48]李翠;[40]李春花;[72,58]李澄;[84]李德民;[1,58]李飞;[1]李刚;[52]李慧;[72,58]李贺;[1,64]李海波;[19]李惠静;[56,93]H.N.Li;[4]J.Q.Li;[59]李静舒;[50]李井文;[1]李科;L.J [1,64]Li;[1]李龙科;[1]李蕾;[44]李明浩;[39,94,95]李培荣;[11]李素娴;[61]栗帅迎;[50]李腾;[1,64]李卫东;[1]李卫国;[72,58]李旭红;[50]李晓玲;[1,64]李晓宇;[47,91]李彦谷;[15]李振轩;[59]李紫源;[43]梁畅;[35]梁浩;[72,58]梁昊;[54]梁勇飞;[32,64]梁羽铁;[14]廖广睿;[50]廖龙洲;[25]J.Libby;[60]A.Limphirat;[59]林创新;[32,64]林德旭;[1]T.Lin;[1]刘北江;[35]刘成;[1]刘春秀;[18,72]D.Liu;[53]刘福虎;[1]刘芳;[6]刘峰;[56,93]G.M.Liu;[39,94,95]H.Liu;[15]刘宏邦;[1,64]刘怀民;[1]刘欢欢;[20]刘汇慧;[72,58]刘建北;[73]刘佳俊;[1,64]刘晶译;[1]刘凯;[41]刘魁勇;[21]刘珂;[72,58]刘亮;[44]刘露;[11,90]刘美宏;[1]刘佩莲;[64]刘倩;[72,58]刘树彬;[11,90]刘桐;[44]刘维克;[72,58]刘卫民;[39,94,95]刘翔;[39,94,95]刘英;[44]刘玉斌;[1,58,64]刘振安;[50]刘智青;[1,58,64]娄辛丑;[59]卢飞翔;[22,83]吕海江;[1,58,81]吕军光;[1]陆小玲;[7]卢宇;[1,58]卢云鹏;[1,64]卢泽辉;[42]罗成林;[83]罗民兴;[11,90]罗涛;[1,58]罗小兰;[64]吕晓睿;[44]吕翌丰;[41]马凤才;[1]马海龙;[50]马连良;[1,64]马明明;[1]马秋梅;[1,64]马润秋;[64]马瑞廷;[1,58]马骁妍;[47,91]马尧;[18]F.E.Maas;[75,77]M.Maggiora;[4]S.Maldaner;[70]S.Malde;[74]Q.A.Malik;[28]A.Mangoni;[47,91]冒亚军;[1]毛泽普;[75,77]S.Marcello;[67]孟召霞;[13,65]J.G.Messchendorp;[30]G.Mezzadri;[1,64]H.Miao;[43]闵天觉;[26]R.E.Mitchell;[1,58,64]莫晓虎;[12,85]N.Yu.Muchnoi;[37]Y.Nefedov;[18,88]F.Nerling;[12,85]I.B.Nikolaev;[1,58]宁哲;[10,96]S.Nisar;[50]牛艳;[64]S.L.Olsen;[1,58,64]欧阳群;[28,29]S.Pacetti;[11,90]潘祥;[57]潘越;[37]A.Pathak;[72,58]裴宇鹏;[4]M.Pelizaeus;[72,58]彭海平;[13,88]K.Peters;[42]平加伦;[1,64]平荣刚;[36]S.Plura;[38]S.Pogodin;[72,58]V.Prasad;[1]齐法制;[72,58]齐航;[62]漆红荣;[43]祁鸣;[11,90]齐天钰;[1,58]钱森;[64]钱文斌;[59]钱圳;[64]乔从丰;[73]秦佳佳;[14]秦丽清;[11,90]覃潇平;[50]秦小帅;[1,58]秦中华;[1]邱进发;[61]屈三强;[74]K.H.Rashid;[36]C.F.Redmer;[40]任旷洁;[77]A.Rivetti;[65]V.Rodin;[77]M.Rolo;[1,64]荣刚;[18]Ch.Rosner;[44]阮氏宁;[37,87]A.Sarantsev;[36]Y.Schelhaas;[4]C.Schnier;[78]K.Schoenning;[30,31]M.Scodeggio;[11,90]尚科羽;[23]单葳;[72,58]单心钰;[55]上官剑锋;[1,64]邵立港;[72,58]邵明;[11,90]沈成平;[1,64]沈宏飞;[64]沈文涵;[1,64]沈肖雁;[64]施伯安;[72,58]石煌超;[1]石京燕;[55]石勤强;[1,64]师荣盛;[1,58]史欣;[19]宋娇娇;[35]宋维民;[47,91]宋昀轩;[75,77]S.Sosio;[75,77]S.Spataro;[36]F.Stieler;[55]苏彭彭;[64]粟杨捷;[1]孙功星;[64]H.Sun;[1]孙浩凯;[19]孙俊峰;[79]孙亮;[1,64]孙胜森;[1,64]孙童;[35]孙文玉;[72,58]孙勇杰;[1]孙永昭;[50]孙振田;[79]谭英华;[72,58]谭雅星;[54]唐昌建;[1]唐光毅;[59]唐健;[73]陶璐燕;[24,92]陶秋田;[70]M.Tat;[72,58]滕佳秀;[78]V.Thoren;[52]田文辉;[32,64]田野;[63]I.Uman;[1]王斌;[72,58]王博;[64]王滨龙;[43]王成伟;[47,91]王大勇;[73]王菲;[39,94,95]王泓鉴;[1,64]王宏鹏;[1,58]王科;[1]王亮亮;[50]王萌;[47,91]王梦真;[1,64]王蒙;[11,90]王顺;[14]S.Wang;[11,90]王婷;[44]王腾蛟;[59]王为;[79]王文欢;[71,58]王维平;[47,91]王轩;[39,94,95]王雄飞;[11,90]王小龙;[62]王亦;[46]王雅迪;[1,58,64]王贻芳;[48]王英豪;[1]王雨晴;[17,1]王亚乾;[1,58]王铮;[1,64]王至勇;[64,15]王子一;[14]魏代会;[69]F.Weidner;[1]文硕频;[68]D.J.White;[4]U.Wiedner;[70]G.Wilkinson;[78]M.Wolke;[4]L.Wollenberg;[1,63]吴金飞;[1]伍灵慧;[1,64]吴连近;[11,90]吴潇;[35]伍雄浩;[72]Y.Wu;[32]吴英杰;[1,58]吴智;[72,58]夏磊;[44,91]相腾;[39,94,95]肖栋;[43]肖光延;[11,90]肖浩;[1]肖素玉;[11,90]肖云龙;[42]肖振军;[43]谢陈;[46,91]谢昕海;[50]谢勇;[1,58]谢宇广;[6]谢跃红;[72,58]谢智鹏;[1,64]邢天宇;[1,64]C.F.Xu;[59]许创杰;[1]许国发;[67]许皓月;[16]徐庆君;[55]徐新平;[81]胥英超;[43]许泽鹏;[11,90]严芳;[11,90]严亮;[72,58]鄢文标;[84]闫文成;[51,89]杨海军;[35]杨昊霖;[1]杨洪勋;[1]杨涛;[44]杨艳芳;[1,64]杨逸翔;[1,64]杨翊凡;[1,59]叶梅;[8]叶铭汉;[1]殷俊昊;[59]尤郑昀;[1,58,64]俞伯祥;[44]喻纯旭;[1,64]余刚;[73]于涛;[47,91]余旭东;[1,64]苑长征;[2]袁丽;[1]S.C.Yuan;[1]袁晓庆;[1,64]袁野;[59]袁朝阳;[40]岳崇兴;[74]A.A.Zafar;[50]曾凡蕊;[6]曾鑫;[24,92]曾云;[35]翟星晔;[59]詹永华;[1,64]张安庆;[1,64]B.L.Zhang;[1]张丙新;[44]张丹昊;[19]张广义;[71]H.Zhang;[35]张宏宏;[59]张宏浩;[1,58,64]张华桥;[1,58]章红宇;[80]张杰磊;[42]张敬庆;[1,58,64]张家文;[39,94,95]J.X.Zhang;[1]张建勇;[1,64]张景芝;[1,64]张剑宇;[1,64]张嘉伟;[61]张黎明;[59]L.Q.Zhang;[43]张雷;[1]P.Zhang;[40,84]张秋岩;[1,64]张水涵;[24,92]张书磊;[46]张小东;[1]X.M.Zhang;[50]张学尧;[55]张旭颜;[70]Y.Zhang;[84]张亚腾;[1,58]张银鸿;[72,58]张言;[1]张瑶;[1]Z.H.Zhang;[35]张兆领;[44]张子羽;[79]张振宇;[1]赵光;[40]赵静;[1,64]赵静宜;[1,58]赵京周;[72,58]赵雷;[1]赵玲;[44]赵明刚;[84]赵书俊;[1,58,53]赵豫斌;[32,64]赵宇翔;[72,58]赵政国;[37,85]A.Zhemchugov;[73]郑波;[1,58]郑建平;[64]郑阳恒;[42]钟彬;[73]钟翠;[59]钟鑫;[50]周航;[1,64]周利鹏;[79]周详;[64]周晓康;[72,58]周小蓉;[40]周兴玉;[11,90]周袆卓;[44]朱江;[1]朱凯;[1,58,64]朱科军;[64]朱琳萱;[71,10,11]朱世海;[43]朱仕强;[80]朱腾蛟;[11,90]朱文静;[72,62]朱莹春;[1,64]朱自安;[1]邹佳恒;[72,58]祖健 机构地区：[1]Institute of High Energy Physics,Beijing 100049,China;[2]Beihang University,Beijing 100191,China;[3]Beijing Institute of PetrochemicalTechnology,Beijing 102617,China;[4]Bochum Ruhr-University,D-44780 Bochum,Germany;[5]Carnegie Mellon University,Pittsburgh,Pennsylvania15213,USA;[6]Central China Normal University,Wuhan 430079,China;[7]Central South University,Changsha 410083,China;[8]China Center of AdvancedScience and Technology,Beijing 100190,China;[9]China University of Geosciences,Wuhan 430074,China;[10]COMSATS University Islamabad,LahoreCampus,Defence Road,Off Raiwind Road,54000 Lahore,Pakistan;[11]Fudan University,Shanghai 200433,China;[12]G.I.Budker Institute of NuclearPhysics SB RAS(BINP),Novosibirsk 630090,Russia;[13]GSI Helmholtzcentre for Heavy Ion Research GmbH,D-64291 Darmstadt,Germany;[14]GuangxiNormal University,Guilin 541004,China;[15]Guangxi University,Nanning 530004,China;[16]Hangzhou Normal University,Hangzhou 310036,China;[17]Hebei University,Baoding 071002,China;[18]Helmholtz Institute Mainz,Staudinger Weg 18,D-55099 Mainz,Germany;[19]Henan NormalUniversity,Xinxiang 453007,China;[20]Henan University of Science and Technology,Luoyang 471003,China;[21]Henan University of Technology,Zhengzhou 450001,China;[22]Huangshan College,Huangshan 245000,China;[23]Hunan Normal University,Changsha 410081,China;[24]Hunan University,Changsha 410082,China;[25]Indian Institute of Technology Madras,Chennai 600036,India;[26]Indiana University,Bloomington,Indiana 47405,USA;[27]INFN Laboratori Nazionali di Frascati,INFN Laboratori Nazionali di Frascati,I-00044,Frascati,Italy;[28]INFN Laboratori Nazionali di Frascati,INFN Sezione di Perugia,I-06100,Perugia,Italy;[29]INFN Laboratori Nazionali di Frascati,University of Perugia,I-06100,Perugia,Italy;[30]INFN Sezione di Ferrara,INFN Sezione di Ferrara,I-44122,Ferrara,Italy;[31]INFN Sezione di Ferrara,University of Ferrara,I-44122,Ferrara,Italy;[32]Institute of Modern Physics,Lanzhou 730000,People's Republic of China;[33]Institute of Physics and Technology,Peace Avenue 54B,Ulaanbaatar 13330,Mongolia;[34]Instituto de Alta Investigación,Universidad de Tarapacá,Casilla 7D,Arica,Chile;[35]Jilin University,Changchun 130012,China;[36]Johannes Gutenberg University of Mainz,Johann-Joachim-Becher-Weg 45,D-55099 Mainz,Germany;[37]Joint Institute forNuclear Research,141980 Dubna,Moscow region,Russia;[38]Justus-Liebig-Universitaet Giessen,II.Physikalisches Institut,Heinrich-Buff-Ring16,D-35392 Giessen,Germany;[39]Lanzhou University,Lanzhou 730000,China;[40]Liaoning Normal University,Dalian 116029,China;[41]LiaoningUniversity,Shenyang 110036,China;[42]Nanjing Normal University,Nanjing 210023,China;[43]Nanjing University,Nanjing 210093,China;[44]NankaiUniversity,Tianjin 300071,China;[45]National Centre for Nuclear Research,Warsaw 02-093,Poland;[46]North China Electric Power University,Beijing 102206,China;[47]Peking University,Beijing 100871,China;[48]Qufu Normal University,Qufu 273165,China;[49]Shandong Normal University,Jinan 250014,China;[50]Shandong University,Jinan 250100,China;[51]Shanghai Jiao Tong University,Shanghai 200240,China;[52]Shanxi NormalUniversity,Linfen 041004,China;[53]Shanxi University,Taiyuan 030006,China;[54]Sichuan University,Chengdu 610064,China;[55]SoochowUniversity,Suzhou 215006,China;[56]South China Normal University,Guangzhou 510006,China;[57]Southeast University,Nanjing 211100,China;[58]State Key Laboratory of Particle Detection and Electronics,Beijing 100049,Hefei 230026,China;[59]Sun Yat-Sen University,Guangzhou510275,China;[60]Suranaree University of Technology,University Avenue 111,Nakhon Ratchasima 30000,Thailand;[61]Tsinghua University,Beijing100084,China;[62]Turkish Accelerator Center Particle Factory Group,Istinye University,34010,Istanbul,Turkey;[63]Turkish Accelerator Center Particle Factory Group,Near East University,Nicosia,North Cyprus,Mersin 10,Turkey;[64]University of Chinese Academy of Sciences,Beijing 100049,China;[65]University of Groningen,NL-9747 AA Groningen,TheNetherlands;[66]University of Hawaii,Honolulu,Hawaii 96822,USA;[67]University of Jinan,Jinan 250022,China;[68]University of Manchester,Oxford Road,Manchester,M139PL,United Kingdom;[69]University of Muenster,Wilhelm-Klemm-Strasse 9,48149 Muenster,Germany;[70]University ofOxford,Keble Road,Oxford OX13RH,United Kingdom;[71]University of Science and Technology Liaoning,Anshan 114051,China;[72]University ofScience and Technology of China,Hefei 230026,China;[73]University of South China,Hengyang 421001,China;[74]University of the Punjab,Lahore-54590,Pakistan;[75]University of Turin and INFN,University of Turin,I-10125,Turin,Italy;[76]University of Turin and INFN,Universityof Eastern Piedmont,I-15121,Alessandria,Italy;[77]University of Turin and INFN,INFN,I-10125,Turin,Italy;[78]Uppsala University,Box 516,SE-75120 Uppsala,Sweden;[79]Wuhan University,Wuhan 430072,China;[80]Xinyang Normal University,Xinyang 464000,China;[81]Yantai University,Yantai 264005,China;[82]Yunnan University,Kunming 650500,China;[83]Zhejiang University,Hangzhou 310027,China;[84]Zhengzhou University,Zhengzhou 450001,China;[85]Also at the Moscow Institute of Physics and Technology,Moscow 141700,Russia;[86]Also at the Novosibirsk State University,Novosibirsk,630090,Russia;[87]Also at the NRC'Kurchatov Institute',PNPI,188300,Gatchina,Russia;[88]Also at Goethe University Frankfurt,60323 Frankfurt am Main,Germany;[89]Also at Key Laboratory for Particle Physics,Astrophysics and Cosmology,Ministry of Education/Shanghai Key Laboratory for Particle Physicsand Cosmology/Institute of Nuclear and Particle Physics,Shanghai 200240,China;[90]Also at Key Laboratory of Nuclear Physics and Ion-beam Application(MOE)and Institute of Modern Physics,Fudan University,Shanghai200443,China;[91]Also at State Key Laboratory of Nuclear Physics and Technology,Peking University,Beijing 100871,China;[92]Also at School of Physics and Electronics,Hunan University,Changsha 410082,China;[93]Also at Guangdong Provincial Key Laboratory of Nuclear Science,Institute of Quantum Matter,South China Normal University,Guangzhou510006,China;[94]Also at Frontiers Science Center for Rare Isotopes,Lanzhou University,Lanzhou 730000,China;[95]Also at Lanzhou Center for Theoretical Physics,Lanzhou University,Lanzhou 730000,China;[96]Also at the Department of Mathematical Sciences,IBA,Karachi,Pakistan. 出　　处：《Chinese Physics C》索引2023年第47卷第3期,共14页 基　　金：Supported in part by National Key R&D Program of China(Grant Nos.2020YFA0406400,2020YFA0406300);National Natural Science Foundation of China(NSFC)(Grant Nos.11635010,11735014,11805086,11835012,11935015,11935016,11935018,11961141012,12022510,12025502,12035009,12035013,12192260,12192261,12192262,12192263,12192264,12192265);the Chinese Academy of Sciences(CAS)Large-Scale Scientific Facility Program;Joint Large-Scale Scientific Facility Funds of the NSFC and CAS(Grant No.U1832207);the CAS Center for Excellence in Particle Physics(CCEPP);100 Talents Program of CAS;Fundamental Research Funds for the Central Universities,Lanzhou University,University of Chinese Academy of Sciences;The Institute of Nuclear and Particle Physics(INPAC)and Shanghai Key Laboratory for Particle Physics and Cosmology;ERC(Grant No.758462);European Union's Horizon 2020 research and innovation programme under Marie Sklodowska-Curie grant agreement(Grant No.894790);German Research Foundation DFG(Grant No.443159800),Collaborative Research Center CRC 1044,GRK 2149;Istituto Nazionale di Fisica Nucleare,Italy;Ministry of Development of Turkey(Grant No.DPT2006K-120470);National Science and Technology fund;National Science Research and Innovation Fund(NSRF)via the Program Management Unit for Human Resources&Institutional Development,Research and Innovation(Grant No.B16F640076);Olle Engkvist Foundation(Grant No.200-0605);STFC(United Kingdom);Suranaree University of Technology(SUT),Thailand Science Research and Innovation(TSRI),and National Science Research and Innovation Fund(NSRF)(Grant No.160355);The Royal Society,UK(Grant Nos.DH140054,DH160214);The Swedish Research Council;U.S.Department of Energy(Grant No.DE-FG02-05ER41374)。 摘　　要：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 detector.The 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 )+ c.c.We 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 energies.The upper limits of σ^(Born).B are found to be at the level of O(1)pb at each energy.Larger 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