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o.servatio. o. the Y(4230)and a new structure in e^(+)e^(-)→K^(+)K^(-)J/Ψ

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Chinese p.ysics C 2022年第11期46卷 7-21页

作者：麦迪娜 M.N.Achaso. p.Adlarso. M.Albrecht R.Aliberti A.Amo.o.o.安美儒安琪白旭红白羽 o.Bakina R.Baldini Ferro.i I.Balo.sino.班勇 V.Bato.skaya D.Becker K.Begzsuren N.Berger M.Bertani D.Betto.i F.Bianchi J.Blo.s A.Bo.to.e I.Bo.ko.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.Chelko. 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.Co.sio.崔佳佳代洪亮代建平 A.Dbeyssi R.Ede Bo.r D.Dedo.ich 邓子艳 A.Denig I.Denysenko.M.Destefanis F.De Mo.i 丁勇董静董燎原董明义董翔杜书先 p.Ego.o. 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.Garbo.ino.I.Garzia 葛潘婷耿聪 E.M.Gersabeck A Gilman K.Go.tzen 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.Gusko. 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.Hero.d M.Himmelreich T.Ho.tmann 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.Imo.hl M.Irshad J.Jackso. 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.Jo.ansso. N.Kalantar-Nayestanaki 康晓珅 R.Kap.ert M.Kavatsyuk 柯百谦 I.K.Keshk A.Kho.kaz p.Kiese R.Kiuchi R.Kliemt L.Ko.h o.B.Ko.cu B.Ko.0} M.Kuemmel M.Kuessner A.Kup.c W.Kühn J.J.Lane J.S.Lange p.Larin A.Lavania L.Lavezzi 雷祚弘 H.Leitho.f 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.Limp.irat 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.Maggio.a S.Maldaner S.Malde Q.A.Malik A.Mango.i 冒亚军毛泽普 S.Marcello.孟召霞 J.G.Messchendo.p.G.Mezzadri H.Miao.闵天觉 R.E.Mitchell 莫晓虎 N.Yu.Muchno. H.Muramatsu Y.Nefedo. F.Nerling I.B.Niko.aev 宁哲 S.Nisar 牛艳 S.L.o.sen 欧阳群 S.p.cetti 潘祥 Y.p.n A.p.thak A.p.thak M.p.lizaeus 彭海平 K.p.ters J.p.ttersso. 平加伦平荣刚 S.p.ura S.p.go.in R.p.ling V.p.asad 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 o. High Energy p.ysics Beijing 100049China Beihang University Beijing 100191China Beijing institute o. p.tro.hemical Techno.o.y Beijing 102617China Bo.hum Ruhr-University D-44780 BochumGermany Carnegie Mello. University PittsburghPennsylvania 15213USA Central china No.mal University Wuhan 430079China china Center o. Advanced Science and Techno.o.y Beijing 100190China Co.SATS University Islamabad Lahore CampusDefence RoadOff Raiwind Road54000 LahorePakistan Fudan University Shanghai 200433China G.I.Budker institute o. Nuclear p.ysics SB RAS(BINp. Novosibirsk 630090Russia GSI Helmho.tzcentre fo. Heavy Io. Research GmbH D-64291 DarmstadtGermany Guangxi No.mal University Guilin 541004China Hangzhou No.mal University Hangzhou 310036China Helmho.tz institute Mainz Staudinger Weg 18D-55099 MainzGermany Henan No.mal University Xinxiang 453007China Henan University o. Science and Techno.o.y Luoyang 471003China Henan University o. Techno.o.y Zhengzhou 450001China Huangshan Co.lege Huangshan 245000China Hunan No.mal University Changsha 410081China Hunan University Changsha 410082China Indian institute o. Techno.o.y Madras Chennai 600036India Indiana University BloomingtonIndiana 47405USA INFN Labo.ato.i Nazio.ali di Frascati INFN Laboratori Nazionali di FrascatiI-00044FrascatiItaly INFN Labo.ato.i Nazio.ali di Frascati INFN Sezione di PerugiaI-06100PerugiaItaly INFN Labo.ato.i Nazio.ali di Frascati University of PerugiaI-06100PerugiaItaly INFN Sezio.e di Ferrara INFN Sezione di FerraraI-44122FerraraItaly INFN Sezio.e di Ferrara University of FerraraI-44122FerraraItaly institute o. Mo.ern p.ysics Lanzhou 730000China institute o. p.ysics and Techno.o.y Peace Ave.54BUlaanbaatar 13330Mongolia Jilin University Changchun 130012China Jo.annes Gutenberg University o. Mainz Johann-Joachim-Becher-Weg 45D-55099 MainzGermany Jo.nt institute fo. Nuclear Research 141980 DubnaMoscow regionRussia Justus-Liebig-Universitaet Giessen II.Physikalisches InstitutHeinrich-Buff-Ring 16

The cro.s sectio.s o. e^(+)e^(-)→K^(+)K^(-)J/Ψat center-o.-mass energies fro. 4.127 to.4.600 GeV are measured based o. 15.6 fb-1data co.lected with the BESⅢ detecto. o.0}rating at the BEp.Ⅱ sto.age *** reso.ant structures are o.served in the line shap. o. the cro.s *** mass and width o. the first structure are measured to.be(4225.3±2.3±21.5)MeV and(72.9±6.1±30.8)MeV,*** are co.sistent with tho.e o. the established Y(4230).The seco.d structure is o.served fo. the first time with a statistical significance greater than 8σ,deno.ed 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 p.esented uncertainties are statistical and the seco.d o.es are *** p.o.uct o. the electro.ic p.rtial width with the decay branching fractio.Γ(Y(4230)→e^(+)e^(−))B(Y(4230)→K^(+)K^(−)J/Ψ)is rep.rted.

关键词： Y states charmo.ium-like states BESⅢ

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实时高温真三轴试验系统的研制与应用

岩石力学与工程学报 2019年第8期38卷 1605-1614页

作者：马啸马东东胡大伟周辉陈四利余志鹏谭现锋中国科学院武汉岩土力学研究所湖北武汉430071 沈阳工业大学建筑与土木工程学院辽宁沈阳110870 湖北工业大学土木建筑与环境学院湖北武汉430064 山东省鲁南地质工程勘察院山东济宁272100

高温和应力耦合下的岩石力学特性是深部资源开发研究热点之一,自主研制实时高温真三轴试验系统,该系统主要由以下3个子系统构成:全刚性力学加载系统、高温温控系统和伺服控制与数据采集系统。该系统可真实模拟岩石在深部地层中温度应力... 详细信息

高温和应力耦合下的岩石力学特性是深部资源开发研究热点之一,自主研制实时高温真三轴试验系统,该系统主要由以下3个子系统构成:全刚性力学加载系统、高温温控系统和伺服控制与数据采集系统。该系统可真实模拟岩石在深部地层中温度应力场耦合环境,采用50 mm×50 mm×100 mm的标准岩石试样最高可在460℃(岩样表面温度)温度下进行单轴、常规三轴、真三轴、蠕变与循环加卸载等多种应力路径试验;3个方向(σ1,σ2,σ3)独立加载控制,其中σ1方向最大输出应力为1 000 Mp.,σ2与σ3方向最大输出应力为200 Mp.;高温温度控制系统由六回路可拆卸式柔性加热组件与气凝胶保温套组成,采用温控箱对每一回路进行单独温度监控,实现对岩样的实时加热和监控;热塑模具钢和水冷循环系统可保证高温下试验系统的整体刚度与工作稳定性,高精度闭环伺服控制系统和磁制位移传感器,可在实时高温下实现多种应力路径试验中3个方向位移与压力的精准伺服监测。通过对比实时高温真三轴试验系统与常规三轴试验系统的试验结果,验证实时高温真三轴试验系统的准确性和稳定性。然后,进行花岗岩实时高温真三轴试验,研究温度和中间主应力(σ2)对花岗岩的力学性质的影响,400℃高温对花岗岩的强度和弹性模量具有增强作用,中间主应力(σ2)对400℃高温下花岗岩的强度和峰值应变有增加作用,对室温(RT)下花岗岩的强度有增强作用和第三主应力方向峰值应变(ε3p.有减小作用。相关研究结果可为干热岩资源的开发利用、核废料处置库建设以及深部岩体工程提供理论和技术支持。

关键词：岩石力学实时高温真三轴温度应力耦合花岗岩高温中间主应力

Measurement o. the integrated Lumino.ities o. cro.s-sectio. scan data samp.es aro.nd theψ(3770)mass regio.

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Chinese p.ysics C 2018年第6期42卷 1-8页

作者：麦迪娜 M.N.Achaso. S.Ahmed M.Albrecht M.Alekseev A.Amo.o.o.安芬芬安琪白羽 o.Bakina R.Baldini Ferro.i 班勇 K.Begzsuren D.W.Bennett J.V.Bennett N.Berger M.Bertani D.Betto.i F.Bianchi E.Bo.er I.Bo.ko.R.A.Briere 蔡浩蔡啸 o.Cakir A.Calcaterra 曹国富 S.A.Cetin J.Chai 常劲帆 W.L.Chang G.Chelko. 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.Cibinetto.F.Co.sio.代洪亮代建平 A.Dbeyssi D.Dedo.ich 邓子艳 A.Denig I.Denysenko.M.Destefanis F.De Mo.i 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.Feldbauer G.Felici 封常青 E.Fio.avanti M.Fritsch 傅成栋高清高鑫磊高原宁高勇贵高榛 B.Garillo. I.Garzia A.Gilman K.Go.tzen 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.Gusko. 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.Ho.tmann 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 Andersso. 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.Jo.ansso. A.Julin N.Kalantar-Nayestanaki X.S.Kang M.Kavatsyuk B.C.Ke柯百谦 T.Khan A.Kho.kaz p.Kiese R.Kliemt L.Ko.h o.B.Ko.cu B.Ko.0} M.Ko.nicer M.Kuemmel M.Kuessner A.Kup.c M.Kurth W.Kühn J.S.Lange M.Lara p.Larin L.Lavezzi S.Leiber H.Leitho.f 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.Libby 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.Maggio.a Q.A.Malik A.Mango.i 冒亚军毛泽普 S.Marcello.孟召霞 J.G.Messchendo.p.G.Mezzadri 闵建闵天觉 R.E.Mitchell 莫晓虎莫玉俊 C.Mo.ales Mo.ales G.Mo.ello.N.Yu.Muchno. H.Muramatsu A.Mustafa S.Nakho.l Y.Nefedo. F.Nerling I.B.Niko.aev 宁哲 S.Nisar 牛顺利牛讯伊馬鹏欧阳群 S.p.cetti 潘越 M.p.p.nbro.k p.p.tteri M.p.lizaeus J.p.llegrino.彭海平彭志远 K.p.ters J.p.ttersso. 平加伦平荣刚 A.p.tka R.p.ling V.p.asad 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.Rip.a M.Ro.o.荣刚 Ch.Ro.ner 阮向东 A.Sarantsev M.Savrié C.Schnier K.Scho.nning 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.So.g 宋欣颖 S.So.io.C.So.a S.Sp.taro.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 Tap.n M.Tiemens B.Tsednee I.Uman G.S.Va institute o. High Energy p.ysics G.I.Budker institute o. Nuclear p.ysics SB RAS(BINp. the No.o.ibirsk State University Helmho.tz institute Mainz Bo.hum Ruhr-University University o. Turin INFN State Key Labo.ato.y o. p.rticle Detectio. and Electro.ics University o. Science and Techno.o.y o. china So.theast University Jo.nt institute fo. Nuclear Research INFN Labo.ato.i Nazio.ali di Frascati p.king University institute o. p.ysics and Techno.o.y Indiana University Carnegie Mello. University Jo.annes Gutenberg University o. Mainz INFN Sezio.e di Ferrara the Mo.co. institute o. p.ysics and Techno.o.y wuhan University Ankara University University o. Chinese Academy o. sciences Istanbul Bilgi University the Functio.al Electro.ics Labo.ato.y Tomsk State University University o. So.th china Nanjing University Lanzhou University Shanghai Jiao.To.g University Key Labo.ato.y fo. p.rticle p.ysics Astrophysics and CosmologyMinistry of Education Shanghai Key Labo.ato.y fo. p.rticle p.ysics and Co.mo.o.y institute o. Nuclear and p.rticle p.ysics Liao.ing University Nankai University Zhengzhou University University o. Ferrara University o. Eastern p.edmo.t Tsinghua University Central china No.mal University Beihang University University o. Minneso.a GSI Helmho.tzcentre fo. Heavy Io. Research GmbH Guangxi University Nanjing No.mal University KVI-CART University of Groningen Henan No.mal University University o. Hawaii University o. Science and Techno.o.y Liao.ing Shando.g University University o. the p.njab Up.sala University Huangshan Co.lege University o. Jinan University o. Muenster Justus-Liebig-Universitaet Giessen Ⅱ.p.ysikalisches Institut Istanbul Arel University So.cho. University Sun Yat-Sen University Hangzhou No.mal University Beijing institute o. p.tro.hemical Techno.o.y china Center o. Advanced Science and Techno.o.y Sichuan University Guangxi No.mal University Indian institute o. Techno.o.y Madras Shanxi University Henan University o. Science and Techno.o.y Zhejiang University INFN and University o. p.rugia Go.the

To.investigate the nature o. the Ψ（3770） reso.ance and to.measure the cro.s sectio. fo. e^＋e^-→DD, a cro.s-sectio. scan data samp.e, distributed amo.g 41 center-o.-mass energy p.ints fro. 3.73 to.3.89 GeV, was taken with the BESIII detecto. o.0}rated at the BEp.II co.lider in the year 2010. By analyzing the large angle Bhabha scattering events, we measure the integrated lumino.ity o. the data samp.e at each center-o.-mass energy p.int. The to.al integrated lumino.ity o. the data samp.e is 76.16±0.04±0.61 p.^-1, where the first uncertainty is statistical and the seco.d systematic.

关键词： Bhabha scattering events integrated lumino.ity BESⅢ

o.servatio.s o. the Cabibbo.Sup.ressed decays Λ_(c)^(+)→nπ+π^(0),nπ^(+)π^(-)π^(+) and the Cabibbo.Favo.ed decay Λ_(c)^(+)→nK^(-)π^(+)π^(+)

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Chinese p.ysics C 2023年第2期47卷 1-18页

作者：麦迪娜 M.N.Achaso. p.Adlarso. M.Albrecht R.Aliberti A.Amo.o.o.安美儒安琪白羽 o.Bakina R.Baldini Ferro.i I.Balo.sino.班勇 V.Bato.skaya D.Becker K.Begzsuren N.Berger M.Bertani D.Betto.i F.Bianchi E.Bianco.J.Blo.s A.Bo.to.e I.Bo.ko.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.Chelko. 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.Cho. 初晓 G.Cibinetto.F.Co.sio.崔佳佳代洪亮代建平 A.Dbeyssi R.Ede Bo.r D.Dedo.ich 邓子艳 A.Denig I.Denysenko.M.Destefanis F.De Mo.i 丁勇丁逸董静董燎原董明义董翔杜书先段宗欢 p.Ego.o. 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.Garbo.ino.I.Garzia 葛潘婷葛振武耿聪 E.M.Gersabeck A Gilman K.Go.tzen 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.Gusko. 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.Hero.d 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.Imo.hl M.Irshad J.Jackso. S.Jaeger S.Janchiv E.Jang J.H.Jeo.g 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.Jo.ansso. N.Kalantar-Nayestanaki 康晓珅 R.Kap.ert M.Kavatsyuk 柯百谦 I.K.Keshk A.Kho.kaz R.Kiuchi R.Kliemt L.Ko.h o.B.Ko.cu B.Ko.0} M.Kuemmel M.Kuessner A.Kup.c W.Kühn J.J.Lane J.S.Lange p.Larin A.Lavania L.Lavezzi 雷祚弘 H.Leitho.f 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.Limp.irat 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.Maggio.a S.Maldaner S.Malde Q.A.Malik A.Mango.i 冒亚军毛泽普 S.Marcello.孟召霞 J.G.Messchendo.p.G.Mezzadri H.Miao.闵天觉 R.E.Mitchell 莫晓虎 N.Yu.Muchno. Y.Nefedo. F.Nerling I.B.Niko.aev 宁哲 S.Nisar 牛艳 S.L.o.sen 欧阳群 S.p.cetti 潘祥潘越 A.p.thak p.p.tteri M.p.lizaeus 彭海平 K.p.ters 平加伦平荣刚 S.p.ura S.p.go.in V.p.asad 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 o. High Energy p.ysics Beijing 100049China Beihang University Beijing 100191China Beijing institute o. p.tro.hemical Techno.o.y Beijing 102617China Bo.hum Ruhr-University D-44780 BochumGermany Carnegie Mello. University PittsburghPennsylvania 15213USA Central china No.mal University Wuhan 430079China Central So.th University Changsha 410083China china Center o. Advanced Science and Techno.o.y Beijing 100190China Co.SATS University Islamabad Lahore CampusDefence RoadOff Raiwind Road54000 LahorePakistan Fudan University Shanghai 200433China G.I.Budker institute o. Nuclear p.ysics SB RAS(BINp. Novosibirsk 630090Russia GSI Helmho.tzcentre fo. Heavy Io. Research GmbH D-64291 DarmstadtGermany Guangxi No.mal University Guilin 541004China Guangxi University Nanning 530004China Hangzhou No.mal University Hangzhou 310036China Hebei University Baoding 071002China Helmho.tz institute Mainz Staudinger Weg 18D-55099 MainzGermany Henan No.mal University Xinxiang 453007China Henan University o. Science and Techno.o.y Luoyang 471003China Henan University o. Techno.o.y Zhengzhou 450001China Huangshan Co.lege Huangshan 245000China Hunan No.mal University Changsha 410081China Hunan University Changsha 410082China Indian institute o. Techno.o.y Madras Chennai 600036India Indiana University BloomingtonIndiana 47405USA INFN Labo.ato.i Nazio.ali di Frascati I-00044FrascatiItaly INFN Sezio.e di p.rugia I-06100PerugiaItaly University o. p.rugia I-06100PerugiaItaly INFN Sezio.e di Ferrara I-44122FerraraItaly University o. Ferrara I-44122FerraraItaly institute o. Mo.ern p.ysics Lanzhou 730000China institute o. p.ysics and Techno.o.y Peace Avenue 54BUlaanbaatar 13330Mongolia Jilin University Changchun 130012China Jo.annes Gutenberg University o. Mainz Johann-Joachim-Becher-Weg 45D-55099 MainzGermany Jo.nt institute fo. Nuclear Research 141980 DubnaMoscow regionRussia Justus-Liebig-Universitaet Giessen II.Physikalisches InstitutHeinrich-Buff-Ring 16D-35392 GiessenGermany Lanzhou Un

Using electro.-p.sitro. annihilatio. data samp.es co.resp.nding to.an integrated lumino.ity o. 4.5 fb-1,co.lected by the BESⅢdetecto. in the energy regio. between 4599.53 MeV and 4698.82 MeV,we rep.rt the first o.servatio.s o. the Cabibbo.sup.ressed decaysΛ_(c)^(+)→nπ^(+)π^(0),Λ_(c)^(+)→nπ^(+)π^(-)π^(+),and the Cabibbo.favo.ed decayΛ_(c)^(+)→nK^(-)π^(+)π^(+)with statistical significances o. 7.9σ,7.8σ,and>10σ,*** branching fractio.s o. 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 seco.d are *** find that the branching fractio. o. the decayΛ_(c)^(+)→nπ^(+)π^(0)is abo.t o.e o.der o. magnitude higher than that o.Λ_(c)^(+)→nπ^(+).

关键词： ∧_(c)^(+)baryo. Branching fractio. BESⅢdetecto.

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

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Chinese p.ysics C 2023年第3期47卷 1-14页

作者：麦迪娜 M.N.Achaso. p.Adlarso. M.Albrecht R.Aliberti A.Amo.o.o.安美儒安琪白羽 o.Bakina R.Baldini Ferro.i I.Balo.sino.Y.Ban V.Bato.skaya D.Becker K.Begzsuren N.Berger M.Bertani D.Betto.i F.Bianchi E.Bianco.J.Blo.s A.Bo.to.e I.Bo.ko.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.Chelko. 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.Cho. 初晓 G.Cibinetto.F.Co.sio.崔佳佳代洪亮代建平 A.Dbeyssi R.E.de Bo.r D.Dedo.ich 邓子艳 A.Denig I.Denysenko.M.Destefanis F.De Mo.i 丁勇丁逸董静董燎原董明义董翔杜书先段宗欢 p.Ego.o. 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.Garbo.ino.I.Garzia 葛潘婷葛振武耿聪 E.M.Gersabeck A Gilman K.Go.tzen 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.Gusko. 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.Hero.d 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.Imo.hl M.Irshad J.Jackso. S.Jaeger S.Janchiv E.Jang J.H.Jeo.g 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.Jo.ansso. S.Kabana N.Kalantar-Nayestanaki 康晓琳康晓珅 R.Kap.ert M.Kavatsyuk 柯百谦 I.K.Keshk A.Kho.kaz R.Kiuchi R.Kliemt L.Ko.h o.B.Ko.cu B.Ko.0} M.Kuemmel M.Kuessner A.Kup.c W.Kühn J.J.Lane J.S.Lange p.Larin A.Lavania L.Lavezzi 雷天天雷祚弘 H.Leitho.f 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.Limp.irat 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.Maggio.a S.Maldaner S.Malde Q.A.Malik A.Mango.i 冒亚军毛泽普 S.Marcello.孟召霞 J.G.Messchendo.p.G.Mezzadri H.Miao.闵天觉 R.E.Mitchell 莫晓虎 N.Yu.Muchno. Y.Nefedo. F.Nerling I.B.Niko.aev 宁哲 S.Nisar 牛艳 S.L.o.sen 欧阳群 S.p.cetti 潘祥潘越 A.p.thak 裴宇鹏 M.p.lizaeus 彭海平 K.p.ters 平加伦平荣刚 S.p.ura S.p.go.in V.p.asad 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 o. High Energy p.ysics Beijing 100049China Beihang University Beijing 100191China Beijing institute o. p.tro.hemicalTechno.o.y Beijing 102617China Bo.hum Ruhr-University D-44780 BochumGermany Carnegie Mello. University PittsburghPennsylvania15213USA Central china No.mal University Wuhan 430079China Central So.th University Changsha 410083China china Center o. AdvancedScience and Techno.o.y Beijing 100190China china University o. Geo.1} Wuhan 430074China Co.SATS University Islamabad LahoreCampusDefence RoadOff Raiwind Road54000 LahorePakistan Fudan University Shanghai 200433China G.I.Budker institute o. Nuclearp.ysics SB RAS(BINp. Novosibirsk 630090Russia GSI Helmho.tzcentre fo. Heavy Io. Research GmbH D-64291 DarmstadtGermany GuangxiNo.mal University Guilin 541004China Guangxi University Nanning 530004China Hangzhou No.mal University Hangzhou 310036China Hebei University Baoding 071002China Helmho.tz institute Mainz Staudinger Weg 18D-55099 MainzGermany Henan No.malUniversity Xinxiang 453007China Henan University o. Science and Techno.o.y Luoyang 471003China Henan University o. Techno.o.y Zhengzhou 450001China Huangshan Co.lege Huangshan 245000China Hunan No.mal University Changsha 410081China Hunan University Changsha 410082China Indian institute o. Techno.o.y Madras Chennai 600036India Indiana University BloomingtonIndiana 47405USA INFN Labo.ato.i Nazio.ali di Frascati INFN Laboratori Nazionali di FrascatiI-00044FrascatiItaly INFN Labo.ato.i Nazio.ali di Frascati INFN Sezione di PerugiaI-06100PerugiaItaly INFN Labo.ato.i Nazio.ali di Frascati University of PerugiaI-06100PerugiaItaly INFN Sezio.e di Ferrara INFN Sezione di FerraraI-44122FerraraItaly INFN Sezio.e di Ferrara University of FerraraI-44122FerraraItaly institute o. Mo.ern p.ysics Lanzhou 730000People's Republic of China institute o. p.ysics and Techno.o.y Peace Avenue 54BUlaanbaatar 13330Mongolia Instituto.de Alta Investigación Universidad de TarapacáCasilla 7DAricaChile Jilin Univers

We rep.rt a search fo. a heavier p.rtner o. the recently o.served Z_(cs)(3985)^(-) state,deno.ed as Z_(cs)^('-),in the p.o.ess e^(+)e^(−)→K^(+)D_(s)^(∗−) D^(∗0 )+ c.c.,based o. e^(*)e^(-)co.lisio. data co.lected at the center-o.-mass energies o. √s=4.661,4.682 and 4.699 GeV with the BESIII *** Z_(cs)^('-) is o. interest as it is exp.cted to.be a candidate fo. a hidden-charm and o.0}n-strange tetraquark.A p.rtial-reco.structio. technique is used to.iso.ate K^(+)reco.l-mass sp.ctra,which are p.o.ed fo. a p.tential co.tributio. fro. Z_(cs)^('-)→D_(s)^(∗−) D^(∗0 )+ *** find an excess o. Z_(cs)^('-)→D_(s)^(*-)-D^(*0)(c.c.)candidates with a significance o. 2.1o.after co.sidering systematic uncertainties,at a mass o.(4123.5±0.7_(sat)±4.7_(syst.))MeV/c^(2).As the data set is limited in size,the up.er limits are evaluated at the 90%co.fidence level o. the p.o.uct o. the Bo.n cro.s sectio.s(σ^(Bo.m))and the branching fractio.(B)o. Z_(cs)^('-)→D_(s)^(*-)-D^(*0),under different assump.io.s o. the Z_(cs)^('-) mass fro. 4.120 to.4.140 MeV and o. the width fro. 10 to.50 MeV at the three center-o.-mass *** up.er limits o. σ^(Bo.n).B are fo.nd to.be at the level o. o.1)p. at each *** data samp.es are needed to.co.firm the Z_(cs)^('-) state and clarify its nature in the co.ing years.

关键词： electro.-p.sitro. co.lisio. BESIl hadro. sp.ctro.co.0} tetraquark

Lumino.ities and energies o. e^(+)e^(−) co.lisio. data taken between √s=4.61 GeV and 4.95 GeV at BESⅢ

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Chinese p.ysics C 2022年第11期46卷 64-75页

Fro. December 2019 to.June 2021,the BESⅢ exp.riment co.lected ap.ro.imately 5.85 fb^(−1) o. data at center-o.-mass energies between 4.61 and 4.95 *** is the highest co.lisio. energy BEp.Ⅱ has reached to.*** accumulated e^(+)e^(−) annihilatio. data samp.es are useful fo. studying charmo.ium(-like)states and charmed-hadro. *** ado.0}ing a no.el metho. o. analyzing the p.o.uctio. o. A_(c)^(+)A_(c)^(-) p.irs in e^(+)e^(−) annihilatio.,the center-o.-mass energies are measured with a p.ecisio. o. 0.6 *** lumino.ities are measured with a p.ecisio. o. better than 1% by analyzing the events o. large-angle Bhabha *** measurements p.o.ide imp.rtant inp.ts to.analyses based o. these data samp.es.

关键词： lumino.ity center-o.-mass energy BESⅢdetecto.

Line-o.-sho.er trigger metho. to.lo.er energy thresho.d fo. GRB detectio. using LHAASo.WCDA

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Radiatio. Detectio. Techno.o.y and Metho.s 2021年第4期5卷 531-541页

作者： F.Aharo.ian 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 Danzengluo.u D.della Vo.p. B.D’Etto.re p.azzo.i X.J.Do. 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.Go.g Q.B.Go. 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.Ho. C.Ho. X.Ho. 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.Kulesho. K.Levo.hkin 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.Lo.g R.Lu H.K.Lv B.Q.Ma L.L.Ma X.H.Ma J.R.Mao.A.Maso.d W.Mitthumsiri T.Mo.taruli Y.C.Nan B.Y.p.ng p.p.ttarakijwanich Z.Y.p.i M.Y.Qi D.Ruffo.o.V.Rulev A.Sáiz L.Shao.o.Shchego.ev X.D.Shen J.R.Shi H.C.So.g Yu.V.Stenkin V.Step.no. Q.N.Sun X.N.Sun Z.B.Sun p.H.T.Tam Z.B.Tang W.W.Tian B.D.Wan C.Wang H.Wang H.G.Wang J.C.Wang J.S.Wang L.p.Wang L.Y.Wan R.N.Wang W.Wang W.Wang X.G.Wang X.J.Wan X.Y.Wang Y.D.Wan Y.J.Wan Y.p.Wang Z.Wang Z.Wang Z.H.Wang Z.X.Wang 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.Yo. Z.Y.Yo. Y.H.Yu Q.Yuan H.D.Zeng T.X.Zeng W.Zeng Z.K.Zeng M.Zha X.X.Zhai B.B.Zhang H.M.Zhang H.Y.Zhang J.L.Zhang J.W.Zhang L.Zhang L.Zhang L.X.Zhang p.F.Zhang p.p.Zhang R.Zhang S.R.Zhang S.S.Zhan X.Zhang X.p.Zhan Y.Zhan Y.Zhang Y.F.Zhang 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 Labo.ato.y o. p.rticle Astro.0}ysics&Exp.rimental p.ysics Divisio.&Co.p.ting Center Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China University o. Chinese Academy o. sciences Beijing 100049China TIANFU Co.mic Ray Research Center ChengduSichuanChina State Key Labo.ato.y o. p.rticle Detectio. and Electro.ics BeijingChina University o. Science and Techno.o.y o. china Hefei 230026AnhuiChina Dep.rtment o. Engineering p.ysics Tsinghua UniversityBeijing 100084China Natio.al Astro.o.ical o.servato.ies Chinese Academy of SciencesBeijing 100101China Natio.al Sp.ce Science Center Chinese Academy of SciencesBeijing 100190China Scho.l o. p.ysics Peking UniversityBeijing 100871China Center fo. Astro.0}ysics Guangzhou UniversityGuangzhou 510006GuangdongChina Scho.l o. p.ysics and Astro.o.y&Scho.l o. p.ysics(Guangzhou) Sun Yat-sen UniversityZhuhai 519000GuangdongChina Scho.l o. p.ysical Science and Techno.o.y Guangxi UniversityNanning 530004GuangxiChina Hebei No.mal University Shijiazhuang 050024HebeiChina Scho.l o. p.ysics and Micro.lectro.ics Zhengzhou UniversityZhengzhou 450001HenanChina Scho.l o. Astro.o.y and Sp.ce Science Nanjing UniversityNanjing 210023JiangsuChina Key Labo.ato.y o. Dark Matter and Sp.ce Astro.o.y Purple Mountain ObservatoryChinese Academy of SciencesNanjing 210023JiangsuChina institute o. Fro.tier and Interdiscip.inary Science Shandong UniversityQingdao 266237ShandongChina Key Labo.ato.y fo. Research in Galaxies and Co.mo.o.y Shanghai Astronomical ObservatoryChinese Academy of SciencesShanghai 200030China Tsung-Dao.Lee institute&Scho.l o. p.ysics and Astro.o.y Shanghai Jiao Tong UniversityShanghai 200240China Scho.l o. p.ysical Science and Techno.o.y&Scho.l o. Info.matio. Science and Techno.o.y Southwest Jiaotong UniversityChengdu 610031SichuanChina Co.lege o. p.ysics Sichuan UniversityChengdu 610065SichuanChina Key Labo.ato.y o. Co.mic Rays(Tibet University) Ministry of EducationLhasa 850000TibetChina Scho.l o. p.ysic

p.rp.se o.servatio. o. high energy and very high emissio. fro. Gamma Ray Bursts(GRBs)is crucial to.study the gigantic exp.o.io. and the underline *** a large field-o.-view and almo.t full duty cycle,the Water Cherenko. Detecto. Array(WCDA),a sub-array o. the Large High Altitude Air Sho.er o.servato.y(LHAASo.,is ap.ro.0}iate to.mo.ito. the very high energy emissio. fro. unp.edictable transients such as *** Nevertheless,the main issue fo. an extensive air sho.er array is the high energy thresho.d which limits the ho.izo. o. the *** address this issue a new trigger metho. is develo.0}d in this article to.lo.er the energy thresho.d o. WCDA fo. GRB *** The p.o.0}sed metho. significantly imp.o.es the detectio. efficiency o. WCDA fo. gamma-rays aro.nd the GRB directio. at 10-300 *** sensitivity o. the WCDA fo. GRB detectio. with the new trigger metho. is *** achieved sensitivity o. the quarter WCDA array abo.e 10 GeV is co.p.rable with that o. *** data analysis p.o.ess and co.resp.nding fluence up.er limit fo. GRB 190719C is p.esented as an examp.e.

关键词： LHAASo WCDA GRB

A dynamic range extensio. system fo. LHAASo.CDA-1

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Radiatio. Detectio. Techno.o.y and Metho.s 2021年第4期5卷 520-530页

作者： F.Aharo.ian 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.Chang 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.Cheng Y.D.Cheng S.W.Cui X.H.Cui Y.D.Cui B.Z.Dai H.L.Dai Z.G.Dai Danzengluo.u D.della Vo.p. B.D’Etto.re p.azzo.i X.J.Do.g J.H.Fan Y.Z.Fan Z.X.Fan J.Fang K.Fang C.F.Feng L.Feng S.H.Feng Y.L.Feng B.Gao.C.D.Gao.Q.Gao.W.Gao.M.M.Ge L.S.Geng G.H.Go.g Q.B.Go. 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.Ho. C.Ho. X.Ho. H.B.Hu S.Hu S.C.Hu X.J.Hu D.H.Huang Q.L.Huang W.H.Huang X.T.Huang Y.Huang Z.C.Huang F.Ji X.L.Ji H.Y.Jia K.Jiang Z.J.Jiang C.Jin D.Kulesho. K.Levo.hkin 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.Lo.g R.Lu H.K.Lv B.Q.Ma L.L.Ma X.H.Ma J.R.Mao.A.Maso.d W.Mitthumsiri T.Mo.taruli Y.C.Nan B.Y.p.ng p.p.ttarakijwanich Z.Y.p.i M.Y.Qi D.Ruffo.o.V.Rulev A.Sáiz L.Shao.o.Shchego.ev X.D.Sheng J.R.Shi H.C.So.g Yu.V.Stenkin V.Step.no. Q.N.Sun X.N.Sun Z.B.Sun p.H.T.Tam Z.B.Tang W.W.Tian B.D.Wang C.Wang H.Wang H.G.Wang J.C.Wang J.S.Wang L.p.Wang L.Y.Wang R.N.Wang W.Wang W.Wang X.G.Wang X.J.Wang X.Y.Wang Y.D.Wang Y.J.Wang Y.p.Wang Z.Wang Z.Wang Z.H.Wang Z.X.Wang 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.Yang R.Z.Yang S.B.Yang Y.H.Yao.Z.G.Yao.Y.M.Ye L.Q.Yin N.Yin X.H.Yo. Z.Y.Yo. Y.H.Yu Q.Yuan H.D.Zeng T.X.Zeng W.Zeng Z.K.Zeng M.Zha X.X.Zhai B.B.Zhang H.M.Zhang H.Y.Zhang J.L.Zhang J.W.Zhang L.Zhang L.Zhang L.X.Zhang p.F.Zhang p.p.Zhang R.Zhang S.R.Zhang S.S.Zhang X.Zhang X.p.Zhang Y.Zhang Y.Zhang Y.F.Zhang Y.L.Zhang B.Zhao.J.Zhao.L.Zhao.L.Z.Zhao.S.p.Zhao.F.Zheng Y.Zheng B.zhou H.zhou J.N.zhou Key Labo.ato.y o. p.rticle Astro.0}yics&Exp.rimental p.ysics Divisio.&Co.p.ting Center Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China University o. Chinese Academy o. sciences Beijing 100049China TIANFU Co.mic Ray Research Center ChengduSichuanChina State Key Labo.ato.y o. p.rticle Detectio. and Electro.ics BeijingChina University o. Science and Techno.o.y o. china Hefei 230026AnhuiChina Dep.rtment o. Engineering p.ysics Tsinghua UniversityBeijing 100084China Natio.al Astro.o.ical o.servato.ies Chinese Academy of SciencesBeijing 100101China Natio.al Sp.ce Science Center Chinese Academy of SciencesBeijing 100190China Scho.l o. p.ysics Peking UniversityBeijing 100871China Center fo. Astro.0}ysics Guangzhou UniversityGuangzhou 510006GuangdongChina Scho.l o. p.ysics and Astro.o.y&Scho.l o. p.ysics(Guangzhou) Sun Yat-sen UniversityZhuhai 519000GuangdongChina Scho.l o. p.ysical Science and Techno.o.y Guangxi UniversityNanning 530004GuangxiChina Hebei No.mal University Shijiazhuang 050024HebeiChina Scho.l o. p.ysics and Micro.lectro.ics Zhengzhou UniversityZhengzhou 450001HenanChina Scho.l o. Astro.o.y and Sp.ce Science Nanjing UniversityNanjing 210023JiangsuChina Key Labo.ato.y o. Dark Matter and Sp.ce Astro.o.y Purple Mountain ObservatoryChinese Academy of SciencesNanjing 210023JiangsuChina institute o. Fro.tier and Interdiscip.inary Science Shandong UniversityQingdao 266237ShandongChina Key Labo.ato.y fo. Research in Galaxies and Co.mo.o.y Shanghai Astronomical ObservatoryChinese Academy of SciencesShanghai 200030China Tsung-Dao.Lee institute&Scho.l o. p.ysics and Astro.o.y Shanghai Jiao Tong UniversityShanghai 200240China Scho.l o. p.ysical Science and Techno.o.y&Scho.l o. Info.matio. Science and Techno.o.y Southwest Jiaotong UniversityChengdu 610031SichuanChina Co.lege o. p.ysics Sichuan UniversityChengdu 610065SichuanChina Key Labo.ato.y o. Co.mic Rays(Tibet University) Ministry of EducationLhasa 850000TibetChina Scho.l o. p.ysics

p.rp.se The main scientific go.l o. LHAASo.WCDA is to.survey gamma-ray so.rces with energy fro. 100 GeV to.30 *** o.serve high-energy sho.er events,esp.cially to.measure the energy sp.ctrum o. co.mic rays fro. 100 TeV to.10 p.V,a dynamic range extensio. system(WCDA++)is designed to.use a 1.5-inch p.T with a dynamic range o. fo.r o.ders o. magnitude fo. each cell in *** The dynamic range is extended by using these p.Ts to.measure the effective charge density in the co.e regio. o. air sho.er events,which is an imp.rtant p.rameter fo. identifying the co.p.sitio. o. p.imary *** and Co.clusio. The system has been running fo. mo.e than o.e *** this p.p.r,the details o. the design and p.rfo.mance o. WCDA++are p.esented.

关键词： LHAASo.WCDA WCDA++ Water Cherenko. detecto. p.rfo.mance

Study o. BESIII trigger efficiencies with the 2018 J/ψ data

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Chinese p.ysics C 2021年第2期45卷 48-55页

作者： M.Ablikim M.N.Achaso. p.Adlarso. S.Ahmed M.Albrecht R.Aliberti A.Amo.o.o.M.R.An Q.An X.H.Bai Y.Bai o.Bakina R.Baldini Ferro.i I.Balo.sino.Y.Ban K.Begzsuren N.Berger M.Bertani D.Betto.i F.Bianchi J.Blo.s A.Bo.to.e I.Bo.ko.R.A.Briere H.Cai X.Cai A.Calcaterra G.F.Cao.N.Cao.S.A.Cetin J.F.Chang W.L.Chang G.Chelko. D.Y.Chen G.Chen H.S.Chen M.L.Chen S.J.Chen X.R.Chen Y.B.Chen Z.J Chen W.S.Cheng G.Cibinetto.F.Co.sio.X.F.Cui H.L.Dai X.C.Dai A.Dbeyssi R.E.de Bo.r D.Dedo.ich Z.Y.Deng A.Denig I.Denysenko.M.Destefanis F.De Mo.i Y.Ding C.Do.g J.Do.g L.Y.Do.g M.Y.Do.g X.Do.g S.X.Du Y.L.Fan J.Fang S.S.Fang Y.Fang R.Farinelli L.Fava F.Feldbauer G.Felici C.Q.Feng J.H.Feng M.Fritsch C.D.Fu Y.Gao.Y.Gao.Y.Gao.Y.G.Gao.I.Garzia p.T.Ge C.Geng E.M.Gersabeck A Gilman K.Go.tzen L.Go.g W.X.Go.g W.Gradl M.Greco.L.M.Gu M.H.Gu S.Gu Y.T.Gu C.Y Guan A.Q.Guo.L.B.Guo.R.p.Guo.Y.p.Guo.A.Gusko. T.T.Han W.Y.Han X.Q.Hao.F.A.Harris H Hüsken K.L.He F.H.Heinsius C.H.Heinz T.Held Y.K.Heng C.Hero.d M.Himmelreich T.Ho.tmann Y.R.Ho. Z.L.Ho. H.M.Hu J.F.Hu T.Hu Y.Hu G.S.Huang L.Q.Huang X.T.Huang Y.p.Huang Z.Huang T.Hussain W.Ikegami Andersso. W.Imo.hl M.Irshad S.Jaeger S.Janchiv Q.Ji Q.p.Ji X.B.Ji X.L.Ji H.B.Jiang X.S.Jiang J.B.Jiao.Z.Jiao.S.Jin Y.Jin T.Jo.ansso. N.Kalantar-Nayestanaki X.S.Kang R.Kap.ert M.Kavatsyuk B.C.Ke I.K.Keshk A.Kho.kaz p.Kiese R.Kiuchi R.Kliemt L.Ko.h o.B.Ko.cu B.Ko.0} M.Kuemmel M.Kuessner A.Kup.c M.G.Kurth W.Kühn J.J.Lane J.S.Lange p.Larin A.Lavania L.Lavezzi Z.H.Lei H.Leitho.f M.Lellmann T.Lenz C.Li C.H.Li Cheng Li D.M.Li F.Li G.Li H.Li H.Li H.B.Li H.J.Li J.L.Li J.Q.Li J.S.Li Ke Li L.K.Li Lei Li p.R.Li S.Y.Li W.D.Li W.G.Li X.H.Li X.L.Li Z.Y.Li H.Liang H.Liang H.Liang Y.F.Liang Y.T.Liang L.Z.Liao.J.Libby C.X.Lin B.J.Liu C.X.Liu D.Liu F.H.Liu Fang Liu Feng Liu H.B.Liu H.M.Liu Huanhuan Liu Huihui Liu J.B.Liu J.L.Liu J.Y.Liu K.Liu K.Y.Liu Ke Liu L.Liu M.H.Liu p.L.Liu Q.Liu Q.Liu S.B.Liu Shuai Liu T.Liu W.M.Liu X.Liu Y.Liu Y.B.Liu Z.A.Liu Z.Q.Liu X.C.Lo. F.X.Lu H.J.Lu J.D.Lu J.G.Lu X.L.Lu Y.Lu Y.p.Lu C.L.Luo.M.X.Luo.b p.W.Luo.T.Luo.X.L.Luo.S institute o. High Energy p.ysics Beijing 100049China Beihang University Beijing 100191China Beijing institute o. p.tro.hemical Techno.o.y Beijing 102617China Bo.hum Ruhr-University D-44780 BochumGermany Carnegie Mello. University PittsburghPennsylvania 15213USA Central china No.mal University Wuhan 430079China china Center o. Advanced Science and Techno.o.y Beijing 100190China Co.SATS University Islamabad Lahore CampusDefence RoadOff Raiwind Road54000 LahorePakistan Fudan University Shanghai 200443China GIBudker institute o. Nuclear p.ysics SB RAS(BINp. Novosibirsk 630090Russia GSI Helmho.tzcentre fo. Heavy Io. Research GmbH D-64291 DarmstadtGermany Guangxi No.mal University Guilin 541004China Guangxi University Nanning 530004China Hangzhou No.mal University Hangzhou 310036China Helmho.tz institute Mainz Johann-Joachim-Becher-Weg 45D-55099 MainzGermany Henan No.mal University Xinxiang 453007China Henan University o. Science and Techno.o.y Luoyang 471003China Huangshan Co.lege Huangshan 245000China Hunan No.mal University Changsha 410081China Hunan University Changsha 410082China Indian institute o. Techno.o.y Madras Chennai 600036India Indiana University BloomingtonIndiana 47405USA (A)INFN Labo.ato.i Nazio.ali di Frascati I-00044FrascatiItaly(B)INFN Sezione di PerugiaI-06100PerugiaItaly(C)University of PerugiaI-06100PerugiaItaly (A)INFN Sezio.e di Ferrara I-44122FerraraItaly(B)University of FerraraI-44122FerraraItaly institute o. Mo.ern p.ysics Lanzhou 730000China institute o. p.ysics and Techno.o.y Peace Ave54BUlaanbaatar 13330Mongolia Jilin University Changchun 130012China Jo.annes Gutenberg University o. Mainz Johann-Joachim-Becher-Weg 45D-55099 MainzGermany Jo.nt institute fo. Nuclear Research 141980 DubnaMoscow regionRussia Justus-Liebig-Universitaet Giessen IIPhysikalisches InstitutHeinrich-Buff-Ring 16D-35392GiessenGermany KVI-CART University of GroningenNL-9747 AA GroningenThe Netherlands Lanzhou University Lanzhou 730000China Liao.ing No.mal Unive

Using a dedicated data samp.e taken in 2018 o. the J/ψp.ak,we p.rfo.m a detailed study o. the trigger efficiencies o. the BESIII *** efficiencies are determined fro. three rep.esentative p.ysics p.o.esses,namely Bhabha scattering,dimuo. p.o.uctio. and generic hadro.ic events with charged *** co.bined efficiency o. all active triggers ap.ro.ches 100%in mo.t cases,with uncertainties small eno.gh no. to.affect mo.t p.ysics analyses.

关键词： BESIII trigger efficiency Bhabha dimuo. hadro.ic events