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Amplitude analysis of the decays d^(0)→π^(+)π^(−)π^(+)π^(−)and d^(0)→π^(+)π^(−)π^(0)π^(0)

Chinese Physics C 2024年第8期48卷 6-33页

作者： m.Ablikim m.n.Achasov P.Adlarson O.Afedulidis X.C.Ai r.Aliberti A.Amoroso Q.An y.Bai O.Bakina I.Balossino y.Ban h.-r.Bao V.Batozskaya K.Begzsuren n.Berger m.Berlowski m.Bertani d.Bettoni F.Bianchi E.Bianco A.Bortone I.Boyko r.A.Briere A.Brueggemann h.Cai X.Cai A.Calcaterra G.F.Cao n.Cao S.A.Cetin j.F.Chang W.L.Chang G.r.Che G.Chelkov C.Chen C.h.Chen Chao Chen G.Chen h.S.Chen m.L.Chen S.j.Chen S.L.Chen S.m.Chen T.Chen X.r.Chen X.T.Chen y.B.Chen y.Q.Chen Z.j.Chen Z.y.Chen S.K.Choi X.Chu G.Cibinetto F.Cossio j.j.Cui h.L.dai j.P.dai A.dbeyssi r.E.de Boer d.dedovich C.Q.deng Z.y.deng A.denig I.denysenko m.destefanis F.de mori B.Fang S.S.Fang W.X.Fang y.Fang y.Q.Fang r.Farinelli L.Fava F.Feldbauer G.Felici C.Q.Feng j.h.Feng y.T.Feng K.Fischer m.Fritsch C.d.Fu j.L.Fu y.W.Fu h.Gao y.n.Gao yang Gao S.Garbolino I.Garzia P.T.Ge Z.W.Ge C.Geng E.m.Gersabeck B.ding X.X.ding y.ding y.ding j.dong L.y.dong m.y.dong X.dong m.C.du S.X.du Z.h.duan P.Egorov y.h.Fan j.Fang jA.Gilman K.Goetzen L.Gong W.X.Gong W.Gradl S.Gramigna m.Greco m.h.Gu y.T.Gu C.y.Guan Z.L.Guan A.Q.Guo L.B.Guo m.j.Guo r.P.Guo y.P.Guo A.Guskov j.Gutierrez K.L.han T.T.han X.Q.hao F.A.harris K.K.he K.L.he F.h.heinsius C.h.heinz y.K.heng C.herold T.holtmann P.C.hong G.y.hou X.T.hou y.r.hou Z.L.hou B.y.hu h.m.hu j.F.hu T.hu y.hu G.S.huang K.X.huang L.Q.huang X.T.huang y.P.huang T.hussain F.h\"olzken n.h\"usken n.in der Wiesche m.Irshad j.jackson S.janchiv j.h.jeong Q.ji Q.P.ji W.ji X.B.ji X.L.ji y.y.ji X.Q.jia Z.K.jia d.jiang h.B.jiang P.C.jiang S.S.jiang T.j.jiang X.S.jiang y.jiang j.B.jiao j.K.jiao Z.jiao S.jin y.jin m.Q.jing X.m.jing T.johansson S.Kabana n.Kalantar-nayestanaki X.L.Kang X.S.Kang m.Kavatsyuk B.C.Ke V.Khachatryan A.Khoukaz r.Kiuchi O.B.Kolcu B.Kopf m.Kuessner X.Kui A.Kupsc W.K\"uhn j.j.Lane P.Larin L.Lavezzi T.T.Lei Z.h.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.B.Li h.j.Li h.n.Li hui Li j.r.Li j.S.Li K.Li L.j.Li L.K.Li Lei Li m.h.Li P.r.Li Q.m.Li Q.X.Li r.Li S.X.Li T.Li W.d.Li W.G.Li X.Li X.h.Li X.L.Li X.y.Li y Institute of high Energy Physics Chinese Academy of SciencesBeijing 100049China Beihang university Beijing 100191China Bochum ruhr-university D-44780 BochumGermany Budker Institute of nuclear Physics SB rAS(BInP) Novosibirsk 630090Russia Carnegie mellon.university PittsburghPennsylvania 15213USA Central China normal university Wuhan 430079China Central South university Changsha 410083China China Center of Advanced Science and Technology Beijing 100190China China university of Geosciences Wuhan 430074China Chung-Ang university Seoul06974Republic of Korea COmSATS university Islamabad Lahore CampusDefence RoadOff Raiwind Road54000 LahorePakistan Fudan.university Shanghai 200433China GSI 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 Kaifeng 475004China henan.university of Science and Technology Luoyang 471003China henan.university of Technology Zhengzhou 450001China huangshan College Huangshan 245000China hunan normal university Changsha 410081China hunan.university Changsha 410082China Indian Institute of Technology madras Chennai 600036India Indiana university BloomingtonIndiana 47405USA InFn Laboratori nazionali di Frascati INFN Laboratori Nazionali di FrascatiI-00044FrascatiItaly InFn Laboratori nazionali di Frascati INFN Sezione di PerugiaI-06100PerugiaItaly InFn Laboratori nazionali di Frascati University of PerugiaI-06100PerugiaItaly InFn Sezione di Ferrara INFN Sezione di FerraraI-44122FerraraItaly InFn Sezione di Ferrara University of FerraraI-44122FerraraItaly Inner mongolia university Hohhot 010021China Institute of modern Physics Lanzhou 730000China Institute of Physics and Technology Peace Avenue 54BUlaanbaatar 13330Mongolia Instituto de A

using e^(+)e^(−)annihilation data corresponding to an integrated luminosity of 2.93 fb^(−1)taken at the center-of-mass energy√s=3.773 GeV with the BESIII detector,a joint amplitude analysis is performed on the decays d^(0)→π^(+)π^(−)π^(+)π^(−)and d^(0)→π^(+)π^(−)π^(0)π^(0)(non-η).The fit fractions of individual components are obtained,and large interferences among the dominant components of the decays d^(0)→a_(1)(1260)π,d^(0)→π(1300)π,d^(0)→ρ(770)ρ(770),and d^(0)→2(ππ)_(S)are observed in both *** the obtained amplitude model,the CP-even fractions of d^(0)→π^(+)π^(−)π^(+)π^(−)and d^(0)→π^(+)π^(−)π^(0)π^(0)(non-η)are determined to be(75.2±1.1_(stat).±1.5_(syst.))%and(68.9±1.5_(stat).±2.4_(syst.))%,*** branching fractions of d^(0)→π^(+)π^(−)π^(+)π^(−)and d^(0)→π^(+)π^(−)π^(0)π^(0)(non-η)are measured to be(0.688±0.010_(stat.)±0.010_(syst.))%and(0.951±0.025_(stat.)±0.021_(syst.))%,*** amplitude analysis provides an important model for the binning strategy in measuring the strong phase parameters of d^(0)→4πwhen.used to determine the CKm angleγ(ϕ_(3))via the B^(−)→dK^(−)decay.

关键词： BESIII d^(0)meson decays amplitude analysis CP-even fraction

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Improved mechanical properties and strengthening mechanism with the altered precipitate orientation in magnesium alloys

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journal of magnesium and Alloys 2022年第5期10卷 1256-1267页

作者： y.j.wan.y.Zeng y.C.dou d.C.hu X.y.Qian Q.Zeng K.X.Sun G.F.Quan Key Laboratory of Advanced Technologies of materials Ministry of EducationSchool of Material Science and EngineeringSouthwest Jiaotong UniversityChengdu 610031China College of materials Science and Engineering Sichuan University of Science and EngineeringZigong 643000China department of materials The University of ManchesterOxford RoadManchester M139PLUnited Kingdom

Aging prior to twinning deformation was proposed to alter the precipitate orientation of the plate-shapedβ-mgAlfrom(0002)basal planes(named basal plates)to■prismatic planes(named prismatic plates)in AZ31 mg *** experimental results showed that the compressive yield strength(CyS)of the sample containing prismatic plates increased 40 mPa and the compression ratio raised by 22%compared to that containing basal *** underlying strengthening mechanism was analyzed via a yield strengthen(yS)model with a function of grain size,precipitate characters(size,oritention,fraction)and Schmid factor(SF).It revealed that the improvement of CyS was mainly attributed to the altered precipitate orientation and refined grain size produced by twinning ***,the prismatic plates always have a stronger hardening effect on basal slip than basal plates under the same varites of precipitate diameter and ***,the decreased CrSS ratio of prismatic slip to basal slip revealed that the activity of non-basal slip in mg alloy might be *** activated slip systems provided more mobile dislocations,contributing to the large compression ratio of the mg rolled sheet with prismatic plates.

关键词： Precipitate orientation Precipitation strengthening Grain boundary strengthening yield strength model

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Inhibiting effect of I-phase formation on the plastic instability of the duplex structured mg-8Li-6Zn-1.2y(in wt.%)alloy

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镁合金学报(英文) 2023年第6期11卷 2196-2204页

作者： B.j.wan. d.K.Xu X.Q.Zhuang L.y.Sheng School of Environmental and Chemical Engineering Shenyang Ligong UniversityShenyang110159China Key Laboratory of nuclear materials and Safety Assessment Institute of Metal ResearchChinese Academy of SciencesShenyang110016China Peking university Shenzhen InstituteShenzhen Key Lab Human Tissue Regenerate&RepairShenzhen 518057China

In this work,the tensile behaviors of mg-8%Li and mg-8%Li-6%Zn-1.2%y alloys at ambient temperature were investigated and *** revealed that the plastic instability of mg-8%Li alloy was quite remarkable and the variation range of serrated flowing stress can reach5 *** the mg-8%Li-6%Zn-1.2%y alloy,the formation of I-phase(mg_(3)Zn_(6)y)can simultaneously enhance the tensile strength and eliminate the plastic instability phenomenon,whilst its ductility was *** in-situ tensile tests revealed that for the mg-8%Li alloy,the severity and number of slip traces present in bothα-mg andβ-Li matrix phases increased remarkably with the applied tensile ***,slip traces were quite fine inβ-Li matrix phase and could be clearly observed when the applied tensile strain exceeded 18%.due to the incompatibility of plastic deformation occurred in two matrix phases,the in.uced strain concentration atα-mg/β-Li interfaces caused their subsequent *** the mg-8%-6%Zn-1.2%y alloy,the I-phase distributed atα-mg/β-Li interfaces suppressed the plastic deformation ofα-mg matrix phase and the tensile strain was dominated by theβ-Li matrix phase,resulting in the disappearance of plastic ***,the plastic strain would preferentially concentrate at I-phase/β-Li interfaces and subsequently in.uced the cracking of I-phase.

关键词： mg-li alloys microstructure Plastic deformation Basal slip Cracking

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Search for the rare decays W^(+)→d_(s)^(+)γ and Z→d^(0)γ at LhCb

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中国物理C:英文版 2023年第9期47卷 14-26页

作者： r.Aaij A.S.W.Abdelmotteleb C.Abellan Beteta F.Abudinén T.Ackernley B.Adeva m.Adinolfi P.Adlarson h.Afsharnia C.Agapopoulou C.A.Aidala Z.Ajaltouni S.Akar K.Akiba j.Albrecht F.Alessio m.Alexander A.Alfonso Albero Z.Aliouche P.Alvarez Cartelle r.Amalric S.Amato j.L.Amey y.Amhis L.An L.Anderlini m.Andersson A.Andreianov m.Andreotti d.Andreou d.Ao F.Archilli A.Artamonov m.Artuso E.Aslanides m.Atzeni B.Audurier S.Bachmann m.Bachmayer j.j.Back A.Bailly-reyre P.Baladron rodriguez V.Balagura W.Baldini j.Baptista de Souza Leite m.Barbetti r.j.Barlow S.Barsuk W.Barter m.Bartolini F.Baryshnikov j.m.Basels G.Bassi B.Batsukh A.Battig A.Bay A.Beck m.Becker F.Bedeschi I.B.Bediaga A.Beiter V.Belavin S.Belin V.Bellee K.Belous I.Belov I.Belyaev G.Benane G.Bencivenni E.Ben-haim A.Berezhnoy *** *** Andres d.Berninghoff h.C.Bernstein C.Bertella A.Bertolin C.Betancourt F.Betti Ia.Bezshyiko S.Bhasin j.Bhom L.Bian m.S.Bieker n.V.Biesuz S.Bifani P.Billoir A.Biolchini m.Birch F.C.r.Bishop A.Bitadze A.Bizzeti m.P.Blago T.Blake F.Blanc j.E.Blank S.Blusk d.Bobulska j.A.Boelhauve O.Boente Garcia T.Boettcher A.Boldyrev C.S.Bolognani r.Bolzonella n.Bondar F.Borgato S.Borghi m.Borsato j.T.Borsuk S.A.Bouchiba T.j.V.Bowcock A.Boyer C.Bozzi m.j.Bradley S.Braun A.Brea rodriguez j.Brodzicka A.Brossa Gonzalo j.Brown d.Brun.u A.Buon.ura L.Buonincontri A.T.Burke C.Burr A.Bursche A.Butkevich j.S.Butter j.Buytaert W.Byczynski S.Cadeddu h.Cai r.Calabrese L.Calefice S.Cali r.Calladine m.Calvi m.Calvo Gomez P.Campana d.h.Campora Perez A.F.Campoverde Quezada S.Capelli L.Capriotti A.Carbone G.Carboni r.Cardinale A.Cardini P.Carniti L.Carus A.Casais Vidal r.Caspary G.Casse m.Cattaneo G.Cavallero V.Cavallini S.Celani j.Cerasoli d.Cervenkov A.j.Chadwick m.G.Chapman m.Charles Ph.Charpentier C.A.Chavez Barajas m.Chefdeville C.Chen S.Chen A.Chernov S.Chernyshenko V.Chobanova S.Cholak m.Chrzaszcz A.Chubykin V.Chulikov P.Ciambrone m.F.Cicala X.Cid Vidal G.Ciezarek G.Ciullo P.E.L.Clarke m.Clemencic h.V.Cliff j.Closier j.L.Cobbledick V.Coco j.A.B.Coelho j.Cogan E.Cognera Centro Brasileiro de Pesquisas Físicas(CBPF) Rio de JaneiroBrazil universidade Federal do rio de janeiro(uFrj) Rio de JaneiroBrazil Center for high Energy Physics Tsinghua UniversityBeijingChina Institute Of high Energy Physics(IhEP) BeijingChina School of Physics State Key Laboratory of nuclear Physics and Technology Peking UniversityBeijingChina university of Chinese Academy of Sciences BeijingChina Institute of Particle Physics Central China Normal UniversityWuhanHubeiChina université Savoie mont Blanc CNRSIN2P3-LAPPAnnecyFrance universitéClermont Auvergne CNRS/IN2P3LPCClermont-FerrandFrance Aix marseille univ CNRS/IN2P3CPPMMarseilleFrance universitéParis-Saclay CNRS/IN2P3IJCLabOrsayFrance Laboratoire Leprince-rin.uet CNRS/IN2P3Ecole PolytechniqueInstitut Polytechnique de ParisPalaiseauFrance LPnhE Sorbonne UniversitéParis Diderot Sorbonne Paris CitéCNRS/IN2P3ParisFrance I.Physikalisches Institut RWTH Aachen UniversityAachenGermany Fakultat Physik Technische Universitat DortmundDortmundGermany max-Planck-Institut für Kernphysik(mPIK) 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 FrascatiItaly InFn Sezione di Genova GenovaItaly InFn Sezione di milano MilanoItaly InFn Sezione di milano-Bicocca MilanoItaly InFn Sezione di Cagliari MonserratoItaly universitàdegli Studi di Padova Universitàe INFNPadovaPadovaItaly InFn Sezione di Pisa PisaItaly InFn Sezione di roma La Sapienza RomaItaly InFn Sezione di roma Tor Vergata RomaItaly nikhef national Institute for Subatomic Physics AmsterdamNetherlands nikhef national Institute for Subatomic Physics and Vu university Amsterdam AmsterdamNetherlands AGh-university of Science and Technology Faculty of Physics and Applied Computer Scienc

A search for the rare decays W^(+)→d_(s)^(+)γ and Z→d0γis performed using proton-proton collision data collected by the LhCb experiment at a centre-of-mass energy of 13TeV,corresponding to an integrated luminosity of 2.0fb−*** significant signal is observed for either decay mode and upper limits on their branching fractions are set using W^(+)→d_(s)^(+)γ and Z→μ+μ−decays as normalization *** upper limits are 6.5×10^(−4) and 2.1×10^(−3) at 95% confidence level for the W^(+)→d_(s)^(+)γ and Z→d^(0)γ decay modes,*** is the first reported search for the Z→d^(0)γ decay,while the upper limit on the W+→d+sγbranching fraction improves upon the previous best limit.

关键词： W/Z boson rare decay upper limit of branching fraction

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Observation of the y(4230)and a new structure in e^(+)e^(-)→K^(+)K^(-)j/Ψ

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Chinese Physics C 2022年第11期46卷 7-21页

作者：麦迪娜 m.n.Achasov P.Adlarson m.Albrecht r.Aliberti A.Amoroso 安美儒安琪白旭红白羽 O.Bakina r.Baldini Ferroli I.Balossino 班勇 V.Batozskaya d.Becker K.Begzsuren n.Berger m.Bertani d.Bettoni F.Bianchi 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 G.Chelkov 陈琛陈刚陈和生陈玛丽陈申见 T.Chen 陈旭荣 X.T.Chen 陈元柏陈卓俊成伟帅初晓 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 丁勇董静董燎原董明义董翔杜书先 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 葛潘婷耿聪 E.m.Gersabeck A Gilman K.Goetzen 龚丽龚文煊 W.Gradl m.Greco 顾旻皓关春懿郭爱强郭立波郭如盼郭玉萍 A.Guskov 韩婷婷韩文颖郝喜庆 F.A.harris 何凯凯何康林 F.h.heinsius C.h.heinz 衡月昆 C.herold m.himmelreich T.holtmann 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麟钦黄性涛黄燕萍 Z.huang T.hussain n hüsken W.Imoehl m.Irshad j.jackson S.jaeger S.janchiv Q.ji 姬清平季晓斌季筱璐吉钰瑶贾泽坤姜侯兵姜赛赛江晓山 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 P.Kiese 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 李聪李翠李春花李澄李德民李飞李刚李贺 h.Li 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紫源梁浩梁昊梁浩梁勇飞梁羽铁廖广睿廖龙洲 j.Libby A.Limphirat C.X.Lin 林德旭 T.Lin 刘北江刘春秀 d.Liu 刘福虎刘芳刘峰 G.m.Liu h.Liu 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 FEmaas 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.miao 闵天觉 r.E.mitchell 莫晓虎 n.yu.muchnoi h.muramatsu y.nefedov F.nerling I.B.nikolaev 宁哲 S.nisar 牛艳 S.L.Olsen 欧阳群 S.Pacetti 潘祥 y.Pan A.Pathak A.Pathak m.Pelizaeus 彭海平 K.Peters j.Pettersson 平加伦平荣刚 S.Plura S.Pogodin r.Poling V.Prasad 齐法制齐航漆红荣祈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 S.Q.Qu Institute of high Energy Physics Beijing 100049China Beihang university Beijing 100191China Beijing Institute of Petrochemical Technology Beijing 102617China Bochum ruhr-university D-44780 BochumGermany Carnegie mellon.university PittsburghPennsylvania 15213USA Central China normal university Wuhan 430079China China Center of Advanced Science and Technology Beijing 100190China COmSATS university Islamabad Lahore CampusDefence RoadOff Raiwind Road54000 LahorePakistan Fudan.university Shanghai 200433China G.I.Budker Institute of nuclear Physics SB rAS(BInP) Novosibirsk 630090Russia GSI 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 cross sections of e^(+)e^(-)→K^(+)K^(-)j/Ψat center-of-mass energies from 4.127 to 4.600 GeV are measured based on 15.6 fb-1data collected with the BESⅢ detector operating at the BEPCⅡ storage *** resonant structures are observed in the line shape of the cross *** mass and width of the first structure are measured to be(4225.3±2.3±21.5)meV and(72.9±6.1±30.8)meV,*** are consistent with those of the established y(4230).The second structure is observed for the first time with a statistical significance greater than 8σ,denoted as y(4500).Its mass and width are determined to be(4484.7±13.3±24.1)meV and(111.1±30.1±15.2)meV,*** first presented uncertainties are statistical and the second ones are *** product of the electronic partial width with the decay branching fractionΓ(y(4230)→e^(+)e^(−))B(y(4230)→K^(+)K^(−)j/Ψ)is reported.

关键词： y states charmon.um-like states BESⅢ

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Line-of-shower trigger method to lower energy threshold for GrB detection.using LhAASO-WCdA

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radiation detection Technology and methods 2021年第4期5卷 531-541页

作者： F.Aharonian Q.An Axikegu L.X.Bai y.X.Bai y.W.Bao d.Bastieri X.j.Bi y.j.Bi h.Cai j.T.Cai Z.Cao Z.Cao j.Chang j.F.Chang X.C.Chan B.m.Chen j.Chen L.Chen L.Chen L.Chen m.j.Chen m.L.Chen Q.h.Chen S.h.Chen S.Z.Chen T.L.Chen X.L.Chen y.Chen n.Chen y.d.Chen S.W.Cui X.h.Cui y.d.Cui B.Z.dai h.L.dai Z.G.dai danzengluobu d.della Volpe B.d’Ettorre Piazzoli X.j.don j.h.Fan y.Z.Fan Z.X.Fan j.Fang K.Fan C.F.Feng L.Feng S.h.Fen y.L.Feng B.Gao C.d.Gao Q.Gao W.Gao m.m.Ge L.S.Gen G.h.Gong Q.B.Gou m.h.Gu j.G.Guo X.L.Guo y.Q.Guo y.y.Guo y.A.han h.h.he h.n.he j.C.he S.L.he X.B.he y.he m.heller y.K.hor C.hou X.hou h.B.hu S.hu S.C.hu X.j.hu d.h.huang Q.L.huan W.h.huang X.T.huang Z.C.huang F.ji X.L.ji h.y.jia K.jiang Z.j.jiang C.jin d.Kuleshov K.Levochkin B.B.Li C.Li C.Li F.Li h.B.Li h.C.Li h.y.Li j.Li K.Li W.L.Li X.Li X.Li X.r.Li y.Li y.Z.Li Z.Li Z.Li E.W.Liang y.F.Liang S.j.Lin B.Liu C.Liu d.Liu h.Liu h.d.Liu j.Liu j.L.Liu j.S.Liu j.y.Liu m.y.Liu r.y.Liu S.m.Liu W.Liu y.n.Liu Z.X.Liu W.j.Long r.Lu h.K.Lv B.Q.ma L.L.ma X.h.ma j.r.mao A.masood W.mitthumsiri T.montaruli y.C.nan B.y.Pang P.Pattarakijwan.ch Z.y.Pei m.y.Qi d.ruffolo V.rulev A.Sáiz L.Shao O.Shchegolev X.d.Shen j.r.Shi h.C.Song yu.V.Stenkin V.Stepanov Q.n.Sun X.n.Sun Z.B.Sun P.h.T.Tam Z.B.Tang W.W.Tian B.d.wan.C.wan. h.wan. h.G.wan. j.C.wan. j.S.wan. L.P.wan. L.y.wan.r.n.wan. W.wan. W.wan. X.G.wan. X.j.wan.X.y.wan. y.d.wan.y.j.wan.y.P.wan. Z.wan. Z.wan. Z.h.wan. Z.X.wan. d.m.Wei j.j.Wei y.j.Wei T.Wen C.y.Wu h.r.Wu S.Wu W.X.Wu X.F.Wu S.Q.Xi j.Xia j.j.Xia G.m.Xiang G.Xiao h.B.Xiao G.G.Xin y.L.Xin y.Xing d.L.Xu r.X.Xu L.Xue d.h.yan C.W.yang F.F.yang j.y.yang L.L.yang m.j.yan r.Z.yang S.B.yang y.h.yao Z.G.yao y.m.ye L.Q.yin n.yin X.h.you Z.y.you y.h.yu Q.yuan h.d.Zeng T.X.Zeng W.Zeng Z.K.Zeng m.Zha X.X.Zhai B.B.zhan. h.m.zhan. h.y.zhan. j.L.zhan. j.W.zhan. L.zhan. L.zhan. L.X.zhan. P.F.zhan. P.P.zhan. r.zhan. S.r.zhan. S.S.zhan.X.zhan. X.P.zhan.y.zhan.y.zhan. y.F.zhan. y.L.zhan.B.Zhao j.Zhao L.Zhao L.Z.Zhao S.P.Zhao F.Zheng y.Zheng B.Zhou h.Zhou j.n.Zhou P.Zhou r.Zhou X.X.Zhou C.G. Key Laboratory of Particle Astrophysics&Experimental Physics division&Computing Center Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China university of Chinese Academy of Sciences Beijing 100049China TIAn.u Cosmic ray research Center ChengduSichuanChina State Key Laboratory of Particle detection and Electronics BeijingChina university of Science and Technology of China Hefei 230026AnhuiChina department of Engineering Physics Tsinghua UniversityBeijing 100084China national Astronomical Observatories Chinese Academy of SciencesBeijing 100101China national Space Science Center Chinese Academy of SciencesBeijing 100190China School of Physics Peking UniversityBeijing 100871China Center for Astrophysics Guangzhou UniversityGuangzhou 510006GuangdongChina School of Physics and Astronomy&School of Physics(Guangzhou) Sun Yat-sen UniversityZhuhai 519000GuangdongChina School of Physical Science and Technology Guangxi UniversityNanning 530004GuangxiChina hebei normal university Shijiazhuang 050024HebeiChina School of Physics and microelectronics Zhengzhou UniversityZhengzhou 450001HenanChina School of Astronomy and Space Science Nanjing UniversityNanjing 210023JiangsuChina Key Laboratory of dark matter and Space Astronomy Purple Mountain ObservatoryChinese Academy of SciencesNanjing 210023JiangsuChina Institute of Frontier and Interdisciplinary Science Shandong UniversityQingdao 266237ShandongChina Key Laboratory for research in Galaxies and Cosmology Shanghai Astronomical ObservatoryChinese Academy of SciencesShanghai 200030China Tsung-dao Lee Institute&School of Physics and Astronomy Shanghai Jiao Tong UniversityShanghai 200240China School of Physical Science and Technology&School of Information Science and Technology Southwest Jiaotong UniversityChengdu 610031SichuanChina College of Physics Sichuan UniversityChengdu 610065SichuanChina Key Laboratory of Cosmic rays(Tibet university) Ministry of EducationLhasa 850000TibetChina School of Physic

Purpose Observation of high energy and very high emission from Gamma ray Bursts(GrBs)is crucial to study the gigantic explosion and the underline *** a large field-of-view and almost full duty cycle,the Water Cherenkov detector Array(WCdA),a sub-array of the Large high Altitude Air Shower Observatory(LhAASO),is appropriate to monitor the very high energy emission from unpredictable transients such as *** nevertheless,the main issue for an extensive air shower array is the high energy threshold which limits the horizon of the *** address this issue a new trigger method is developed in this article to lower the energy threshold of WCdA for GrB *** The proposed method significantly improves the detection efficiency of WCdA for gamma-rays around the GrB direction at 10-300 *** sensitivity of the WCdA for GrB detection with the new trigger method is *** achieved sensitivity of the quarter WCdA array above 10 GeV is comparable with that of *** data analysis process and corresponding fluence upper limit for GrB 190719C is presented as an example.

关键词： LhAASO WCdA GrB

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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.miao 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 PetrochemicalTechnology Beijing 102617China Bochum 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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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.miao 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 Petrochemical Technology Beijing 102617China Bochum 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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Luminosities and energies of e^(+)e^(−) collision data taken between √s=4.61 GeV and 4.95 GeV at BESⅢ

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Chinese Physics C 2022年第11期46卷 64-75页

From december 2019 to june 2021,the BESⅢ experiment collected approximately 5.85 fb^(−1) of data at center-of-mass energies between 4.61 and 4.95 *** is the highest collision energy BEPCⅡ has reached to *** accumulated e^(+)e^(−) annihilation data samples are useful for studying charmon.um(-like)states and charmed-hadron *** adopting a novel method of analyzing the production of A_(c)^(+)A_(c)^(-) pairs in e^(+)e^(−) annihilation,the center-of-mass energies are measured with a precision of 0.6 *** luminosities are measured with a precision of better than 1% by analyzing the events of large-angle Bhabha *** measurements provide important in.uts to analyses based on these data samples.

关键词： luminosity center-of-mass energy BESⅢdetector

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Search for electron-antin.utrinos associated with gravitational-wave events GW150914,GW151012,GW151226,GW170104,GW170608,GW170814,and GW170817 at daya Bay

引用

Chinese Physics C 2021年第5期45卷 190-201页

作者： F.P.An A.B.Balantekin h.r.Band m.Bishai S.Blyth G.F.Cao j.Cao j.F.Chang y.Chang h.S.Chen S.m.Chen y.Chen y.X.Chen j.Cheng Z.K.Cheng j.j.Cherwinka m.C.Chu j.P.Cummings O.dalager F.S.deng y.y.ding m.V.diwan.T.dohnal j.dove m.dvorak d.A.dwyer j.P.Gallo m.Gonchar G.h.Gong h.Gong W.Q.Gu j.y.Guo L.Guo X.h.Guo y.h.Guo Z.Guo r.W.hacken.urg S.hans m.he K.m.heeger y.K.heng A.higuera y.K.hor y.B.hsiung B.Z.hu j.r.hu T.hu Z.j.hu h.X.huang X.T.huang y.B.huang P.huber d.E.jaffe K.L.jen X.L.ji X.P.ji r.A.johnson d.jones L.Kang S.h.Kettell S.Kohn m.Kramer T.j.Langford j.Lee j.h.C.Lee r.T.Lei r.Leitner j.K.C.Leung F.Li j.j.Li Q.j.Li S.Li S.C.Li W.d.Li X.n.Li X.Q.Li y.F.Li Z.B.Li h.Liang C.j.Lin G.L.Lin S.Lin j.j.Ling j.m.Link L.Littenberg B.r.Littlejohn j.C.Liu j.L.Liu C.Lu h.Q.Lu j.S.Lu K.B.Luk X.B.ma X.y.ma y.Q.ma C.marshall d.A.martinez Caicedo K.T.medonald r.d.mcKeown y.meng j.napolitano d.n.umov E.n.umova j.P.Ochoa-ricoux A.OIshevskiy h.-r.Pan j.Park S.Patton j.C.Peng C.S.j.Pun F.Z.Qi m.Qi X.Qian n.raper j.ren C.morales reveco r.rosero B.roskovec X.C.ruan h.Steiner j.L.Sun T.Tmej K.Treskov W.-h.Tse C.E.Tull B.Viren V.Vorobel C.h.wan. j.wan. m.wan. n.y.wan. r.G.wan. W.wan. W.wan. X.wan. y.wan. y.F.wan. Z.wan. Z.wan. Z.m.wan. h.y.Wei L.h.Wei L.j.Wen K.Whisnant C.G.White h.L.h.Wong E.Worcester d.r.Wu F.L.Wu Q.Wu W.j.Wu d.m.Xia Z.Q.Xie Z.Z.Xing j.L.Xu T.Xu T.Xue C.G.yang L.yang y.Z.yang h.F.yao m.ye m.yeh B.L.young h.Z.yu Z.y.yu B.B.yue S.Zeng y.Zeng L.zhan.C.zhan. F.y.zhan. h.h.zhan. j.W.zhan. Q.m.zhan. X.T.zhan. y.m.zhan. y.X.zhan. y.y.zhan. Z.j.zhan. Z.P.zhan. Z.y.zhan. j.Zhao L.Zhou h.L.Zhuang j.h.Zou Instiute of modern Physics East China University of Science and TechnologyShanghai 200237 university of Wisconsin MadisonWisconsin 53706 Wright Laboratory and department of Physics Yale UniversityNew HavenConnecticut 06520 Brookhaven national Laboratory UptonNew York 11973 department of Physics National Taiwan UniversityTaipei Institute of high Energy Physics Beijing 100049 national united university Miao-Li department of Engineering Physics Tsinghua UniversityBejing 100084 Shenzhen.university Shenzhen 518060 Sun yat-Sen(Zhongshan.university Guangzhou north China Electric Power university Bejjing 102206 Chinese university of hong Kong Hong Kong 999077 Siena College LoudonvilleNew York 12211 department of Physics and Astronomy University of CaliforniaIrvineCaliformia 92697 university of Science and Technology of China Hefei 230026 Charles university Faculty of Mathematics and PhysicsPrague department of Physics University of llinois at Urbana-ChampaignUrbanaIlinois 61801 Lawrence Berkeley national Laboratory BerkeleyCalifornia 94720 department of Physics Illinois Institute of TechnologyChicagoIllinois 60616 joint Institute for nuclear research DubnaMoscow Region Beijing normal university Beijing 100875 department of nuclear Science and Technology School of Energy and Power EngineeringXi'an Jiaotong UniversityXi'an 710049 department of Physics University of HoustonHoustonTexas 77204 China Institute of Atomic Energy Beijing 102413 Shandong university Jinan 250100 Guangxi university Nanning 530004 Center for n.utrino Physics Virginia TechBlacksburgVirginia 24061 Institute of Physics National Chiao-Tung UniversityHsinchu department of Physics University of CincinnatiCincinnatiOhio 45221 department of Physies Collge of Science and TechnologyTemple UniversityPhiladelphiaPennsylvania 19122 dongguan.university of Technology Dongguan 523808 department of Physics University of CaliforniaBerkeleyCalifornia 94720 department of Physics The University of Hong KongPokfulamHong Kong 999077 School

The establishment of a possible connection between n.utrino emission and gravitational-wave(GW)bursts is important to our understanding of the physical processes that occur when black holes or n.utron stars *** the daya Bay experiment,using the data collected from december 2011 to August 2017,a search was per-formed for electron-antin.utrino signals that coincided with detected GW events,including GW150914,GW151012,GW151226,GW170104,GW170608,GW 170814,and GW *** used three time windows of±10,±500,and±1000 s relative to the occurrence of the GW events and a n.utrino energy range of 1.8 to 100 meV to search for correlated n.utrino *** detected electron-antin.utrino candidates were consistent with the expected background rates for all the three time *** monochromatic spectra,we found upper limits(90%confidence level)of the electron-antin.utrino fluence of(1.13-2.44)×10^(11)cm^(-2)at 5 meV to 8.0×10^(7)cm^(-2)at 100 meV for the three time w *** the assumption of a Fermi-dirac spectrum,the upper limits were found to be(5.4-7.0)×10^(9)cm^(2)for the three time windows.

关键词： grav itational waves electron-antin.utrinos fluence upper limit

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