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STCF conceptual design report (Volume 1): Ph.sics & detector

Frontiers of ph.sics 2024年第1期19卷 1-154页

作者： M.Ach.sov X.C.Ai L.P.An R.Aliberti q.An X.z.Bai y.Bai O.Bakina A.Barnyakov V.Blinov V.Bobrovnikov D.Bodrov A.Bogomyagkov A.Bondar I.Boyko z.h.Bu F.M.Cai h.Cai j.j.Cao q.h.Cao X.Cao z.Cao q.Ch.ng K.T.Ch.o D.y.Ch.n h.Ch.n h.X.Ch.n j.F.Ch.n K.Ch.n L.L.Ch.n P.Ch.n S.L.Ch.n S.M.Ch.n S.Ch.n S.P.Ch.n W.Ch.n X.Ch.n X.F.Ch.n X.R.Ch.n y.Ch.n y.q.Ch.n h.y.Ch.ng j.Ch.ng S.Ch.ng T.G.Ch.ng j.P.Dai L.y.Dai X.C.Dai D.Dedovich.A.Denig I.Denisenko j.M.Dias D.z.Ding L.y.Dong W.h.Dong V.Druzh.nin D.S.Du y.j.Du z.G.Du L.M.Duan D.Epifanov y.L.Fan S.S.Fang z.j.Fang G.Fedotovich.C.q.Feng X.Feng y.T.Feng j.L.Fu j.Gao y.n.Gao P.S.Ge C.q.Geng L.S.Geng A.Gilman L.Gong T.Gong B.Gou W.Gradl j.L.Gu A.Guevara L.C.Gui A.q.Guo F.K.Guo j.C.Guo j.Guo y.P.Guo z.h.Guo A.Guskov K.L.h.n L.h.n M.h.n X.q.h.o j.B.h. S.q.h. X.G.h. y.L.h. z.B.h. z.X.h.ng B.L.h.u T.j.h.u y.R.h.u C.y.h. h.M.h. K.h. R.j.h. W.h.h. X.h.h. y.C.h. j.h.a G.S.h.ang j.S.h.ang M.h.ang q.y.h.ang W.q.h.ang X.T.h.ang X.j.h.ang y.B.h.ang y.S.h.ang n.h.sken V.Ivanov q.P.j. j.j.j.a S.j.a z.K.j.a h.B.j.ang j.j.ang S.z.j.ang j.B.j.ao z.j.ao h.j.j.ng X.L.Kang X.S.Kang B.C.Ke M.Kenzie A.Kh.ukaz I.Koop E.Kravch.nko A.Kuzmin y.Lei E.Levich.v C.h.Li C.Li D.y.Li F.Li G.Li G.Li h.B.Li h.Li h.n.Li h.j.Li h.L.Li j.M.Li j.Li L.Li L.Li L.y.Li n.Li P.R.Li R.h.Li S.Li T.Li W.j.Li X.Li X.h.Li X.q.Li X.h.Li y.Li y.y.Li z.j.Li h.Liang j.h.Liang y.T.Liang G.R.Liao L.z.Liao y.Liao C.X.Lin D.X.Lin X.S.Lin B.j.Liu C.W.Liu D.Liu F.Liu G.M.Liu h.B.Liu j.Liu j.j.Liu j.B.Liu K.Liu K.y.Liu K.Liu L.Liu q.Liu S.B.Liu T.Liu X.Liu y.W.Liu y.Liu y.L.Liu z.q.Liu z.y.Liu z.W.Liu I.Logash.nko y.Long C.G.Lu j.X.Lu n.Lu q.F.Lü y.Lu y.Lu z.Lu P.Lukin F.j.Luo T.Luo X.F.Luo y.h.Luo h.j.Lyu X.R.Lyu j.P.Ma P.Ma y.Ma y.M.Ma F.Maas S.Malde D.Matvienko z.X.Meng R.Mitch.ll A.nefediev y.nefedov S.L.Olsen q.Ouyang P.Pakh.ov G.Pakh.ova X.Pan y.Pan E.Passemar y.P.Pei h.P.Peng L.Peng X.y.Peng X.j.Peng K.Peters S.Pivovarov E.Pyata B.B.qi y.q.qi W.B.qian y.qian C.F.qiao j.j.qin j.j.qin L.q.qin X.S.qin T.L.qiu j.Rademacker C.F.Redmer h.y.Sang Anh.i University Hefei 230039China Beih.ng University Beijing 100191China Budker Institute of nuclear Ph.sics Novosibirsk 630090Russia CAS Key Laboratory of Th.oretical Ph.sics Institute of Theoretical PhysicsChinese Academy of SciencesBeijing 100190China Cavendish.Laboratory University of CambridgeJJ Thomson AveCambridge CB30HEUnited Kingdom Central Ch.na normal University Wuhan 430079China Central South.University Changsha 410083China Ch.na University of Geosciences Wuhan 430074China Ch.na University of Mining and Tech.ology Xuzhou 221116China École Polytech.ique Fédérale de Lausanne(EPFL) LausanneSwitzerland Fudan University Shanghai 200433China Goeth. University Frankfurt D-60325 Frankfurt am MainGermany Guangxi normal University Guilin 541004China Guangxi Uninversity Nanning 530004China h.ngzh.u Institute for Advanced Study UCASHangzhou 310024China h.bei normal University Shijiazhuang 050024China h.bei University Baoding 071002China h.fei University of Tech.ology Hefei 230601China h.lmh.ltz Institute Mainz Staudinger Weg 18D-55099 MainzGermany h.nan normal University Xinxiang 453007China h.nan University Kaifeng 475004China h.gh.Energy Ph.sics Center Chung-Ang UniversitySeoul 06974Korea h.gh.r Sch.ol of Economy 11 Pokrovsky Bulvar Moscow 109028Russia h.angsh.n University Huangshan 245000China h.bei University of Automotive Tech.ology Shiyan 442002China h.nan normal University Changsha 410081China h.nan University of Science and Tech.ology Xiangtan 411201China h.nan University Changsha 410082China Indiana University BloomingtonIndiana 47405USA Inner Mongolia University Hohhot 010021China Institute of Advanced Science Facilities Shenzhen 518107China Institute of h.gh.Energy Ph.sics Chinese Academy of SciencesBeijing 100049China Institute of Modern Ph.sics Chinese Academy of SciencesLanzhou 730000China Institute of Ph.sics Academia SinicaTaipeiTaiwan 11529China Institute of Th.oretical Ph.sics Chinese Academy of SciencesBeijing 100190China j.lin University Changch

Th. superτ-ch.rm facility(STCF)is an electron–positron collider proposed by th. Ch.nese particle ph.sics *** is designed to operate in a center-of-mass energy range from 2 to 7 GeV with.a peak luminosity of 0.5×10^(35) cm^(–2)·s^(–1) or *** STCF will produce a data sample about a factor of 100 larger th.n th.t of th. presentτ-ch.rm factory—th. BEPCII,providing a unique platform for exploring th. asymmetry of matter-antimatter(ch.rge-parity violation),in-depth.studies of th. internal structure of h.drons and th. nature of non-perturbative strong interactions,as well as search.ng for exotic h.drons and ph.sics beyond th. Standard *** STCF proj.ct in Ch.na is under development with.an extensive R&D *** document presents th. ph.sics opportunities at th. STCF,describes conceptual designs of th. STCF detector system,and discusses future plans for detector R&D and ph.sics case studies.

关键词： electron–positron collider tau-ch.rm region h.gh.luminosity STCF detector conceptual design

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Amplitude analysis of th. decays D^(0)→π^(+)π^(−)π^(+)π^(−)and D^(0)→π^(+)π^(−)π^(0)π^(0)

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Ch.nese Ph.sics C 2024年第8期48卷 6-33页

作者： M.Ablikim M.n.Ach.sov 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.Bianch. 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.Ch.ng W.L.Ch.ng G.R.Ch. G.Ch.lkov C.Ch.n C.h.Ch.n Ch.o Ch.n G.Ch.n h.S.Ch.n M.L.Ch.n S.j.Ch.n S.L.Ch.n S.M.Ch.n T.Ch.n X.R.Ch.n X.T.Ch.n y.B.Ch.n y.q.Ch.n z.j.Ch.n z.y.Ch.n S.K.Ch.i X.Ch. 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.Fisch.r 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 j..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.h.n T.T.h.n X.q.h.o F.A.h.rris K.K.h. K.L.h. F.h.h.insius C.h.h.inz y.K.h.ng C.h.rold T.h.ltmann P.C.h.ng G.y.h.u X.T.h.u y.R.h.u z.L.h.u B.y.h. h.M.h. j.F.h. T.h. y.h. G.S.h.ang K.X.h.ang L.q.h.ang X.T.h.ang y.P.h.ang T.h.ssain F.h."olzken n.h."usken n.in der Wiesch. M.Irsh.d j.j.ckson S.j.nch.v j.h.j.ong q.j. q.P.j. W.j. X.B.j. X.L.j. y.y.j. X.q.j.a z.K.j.a D.j.ang h.B.j.ang P.C.j.ang S.S.j.ang T.j.j.ang X.S.j.ang y.j.ang j.B.j.ao j.K.j.ao z.j.ao S.j.n y.j.n M.q.j.ng X.M.j.ng T.j.h.nsson S.Kabana n.Kalantar-nayestanaki X.L.Kang X.S.Kang M.Kavatsyuk B.C.Ke V.Kh.ch.tryan A.Kh.ukaz R.Kiuch. O.B.Kolcu B.Kopf M.Kuessner X.Kui A.Kupsc W.K\"uh. j.j.Lane P.Larin L.Lavezzi T.T.Lei z.h.Lei h.Leith.ff M.Lellmann T.Lenz C.Li C.Li C.h.Li Ch.ng Li D.M.Li F.Li G.Li h.Li h.B.Li h.j.Li h.n.Li h.i 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 h.gh.Energy Ph.sics Chinese Academy of SciencesBeijing 100049China Beih.ng University Beijing 100191China Boch.m Ruh.-University D-44780 BochumGermany Budker Institute of nuclear Ph.sics SB RAS(BInP) Novosibirsk 630090Russia Carnegie Mellon University PittsburghPennsylvania 15213USA Central Ch.na normal University Wuhan 430079China Central South.University Changsha 410083China Ch.na Center of Advanced Science and Tech.ology Beijing 100190China Ch.na University of Geosciences Wuhan 430074China Ch.ng-Ang University Seoul06974Republic of Korea COMSATS University Islamabad Lahore CampusDefence RoadOff Raiwind Road54000 LahorePakistan Fudan University Shanghai 200433China GSI h.lmh.ltzcentre for h.avy Ion Research.Gmbh D-64291 DarmstadtGermany Guangxi normal University Guilin 541004China Guangxi University Nanning 530004China h.ngzh.u normal University Hangzhou 310036China h.bei University Baoding 071002China h.lmh.ltz Institute Mainz Staudinger Weg 18D-55099 MainzGermany h.nan normal University Xinxiang 453007China h.nan University Kaifeng 475004China h.nan University of Science and Tech.ology Luoyang 471003China h.nan University of Tech.ology Zhengzhou 450001China h.angsh.n College Huangshan 245000China h.nan normal University Changsha 410081China h.nan University Changsha 410082China Indian Institute of Tech.ology 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 Ph.sics Lanzhou 730000China Institute of Ph.sics and Tech.ology Peace Avenue 54BUlaanbaatar 13330Mongolia Instituto de A

Using e^(+)e^(−)annih.lation data corresponding to an integrated luminosity of 2.93 fb^(−1)taken at th. center-of-mass energy√s=3.773 GeV with.th. BESIII detector,a j.int amplitude analysis is performed on th. decays D^(0)→π^(+)π^(−)π^(+)π^(−)and D^(0)→π^(+)π^(−)π^(0)π^(0)(non-η).Th. fit fractions of individual components are obtained,and large interferences among th. dominant components of th. 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.*** th. obtained amplitude model,th. 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.))%,*** branch.ng 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 th. binning strategy in measuring th. strong ph.se parameters of D^(0)→4πwh.n used to determine th. CKM angleγ(ϕ_(3))via th. B^(−)→DK^(−)decay.

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

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由超拍电子伏特加速器产生的超高能伽马射线气泡

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Science Bulletin 2024年第4期69卷 449-457页

作者： Lh.ASO Collaboration zh.n Cao Ch.andong Gao Cong Li Ruo-yu Liu Ruizh. yang 不详 Key Laboratory of Particle Astroph.ics&Experimental Ph.sics Division&Computing Center Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China University of Ch.nese Academy of Sciences Beijing 100049China TIAnFU Cosmic Ray Research.Center ChengduChina Institute of Frontier and Interdisciplinary Science Shandong UniversityQingdao 266237China Sch.ol of Astronomy and Space Science Nanjing UniversityNanjing 210023China University of Science and Tech.ology of Ch.na Hefei 230026China

We report th. detection of aγ-ray bubble spanning at least 100deg2 in ultra-h.gh.energy(Uh.)up to a few PeV in th. direction of th. star-forming region Cygnus X,implying th. presence super PeVatron(s)accelerating protons to at least 10 PeV.A log-parabola form with.th. ph.ton indexΓ(E)=(2.71±0.02)+(0.11±0.02)×log10(E/10 TeV)is found fitting th. gamma-ray energy spectrum of th. bubble *** sources,“h.t spots”correlated with.very massive molecular clouds,and a quasi-sph.rical amorph.usγ-ray emitter with.a sh.rp central brigh.ening are observed in th. *** th. core of~0.5°,spatially associating with.a region containing massive OB association(Cygnus OB2)and a microquasar(Cygnus X-3),as well as previously reported multi-TeV sources,an enh.nced concentration of Uh.γ-rays is observed with.2 ph.tons at energies above 1 *** general feature of th. bubble,th. morph.logy,and th. energy spectrum,are reasonably reproduced by th. assumption of a particle accelerator in th. core,continuously inj.cting protons into th. ambient medium.

关键词： Cosmic rays γ-rays Interstellar medium Star cluster

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Evidence for particle acceleration approach.ng PeV energies in th. W51 complex

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Science Bulletin 2024年第18期69卷 2833-2841页

作者： Lh.ASO Collaboration zh.n Cao F.Ah.ronian Axikegu y.X.Bai y.W.Bao D.Bastieri X.j.Bi y.j.Bi W.Bian A.V.Bukevich.q.Cao W.y.Cao zh. Cao j.Ch.ng j.F.Ch.ng A.M.Ch.n E.S.Ch.n h.X.Ch.n Liang Ch.n Lin Ch.n Long Ch.n M.j.Ch.n M.L.Ch.n q.h.Ch.n S.Ch.n S.h.Ch.n S.z.Ch.n T.L.Ch.n y.Ch.n n.Ch.ng y.D.Ch.ng M.y.Cui S.W.Cui X.h.Cui y.D.Cui B.z.Dai h.L.Dai z.G.Dai Danzengluobu X.q.Dong K.K.Duan j.h.Fan y.z.Fan j.Fang j.h.Fang K.Fang C.F.Feng h.Feng L.Feng S.h.Feng X.T.Feng y.Feng y.L.Feng S.Gabici B.Gao C.D.Gao q.Gao W.Gao W.K.Gao M.M.Ge L.S.Geng G.Giacinti G.h.Gong q.B.Gou M.h.Gu F.L.Guo X.L.Guo y.q.Guo y.y.Guo y.A.h.n M.h.san h.h.h. h.n.h. j.y.h. y.h. y.K.h.r B.W.h.u C.h.u X.h.u h.B.h. q.h. S.C.h. D.h.h.ang T.q.h.ang W.j.h.ang X.T.h.ang X.y.h.ang y.h.ang X.L.j. h.y.j.a K.j.a K.j.ang X.W.j.ang z.j.j.ang M.j.n M.M.Kang I.Karpikov D.Kulesh.v K.Kurinov B.B.Li C.M.Li Ch.ng Li Cong Li D.Li F.Li h.B.Li h.C.Li j.an Li j.e Li K.Li S.D.Li W.L.Li W.L.Li X.R.Li Xin Li y.z.Li zh. Li zh.o Li E.W.Liang y.F.Liang S.j.Lin B.Liu C.Liu D.Liu D.B.Liu h.Liu h.D.Liu j.Liu j.L.Liu M.y.Liu R.y.Liu S.M.Liu W.Liu y.Liu y.n.Liu q.Luo y.Luo h.K.Lv B.q.Ma L.L.Ma X.h.Ma j.R.Mao z.Min W.Mitth.msiri h.j.Mu y.C.nan A.neronov L.j.Ou P.Pattarakij.anich.z.y.Pei j.C.qi M.y.qi B.q.qiao j.j.qin A.Raza D.Ruffolo A.Sáiz M.Saeed D.Semikoz L.sh.o O.sh.h.golev X.D.sh.ng F.W.sh. h.C.Song yu.V.Stenkin V.Stepanov y.Su D.X.Sun q.n.Sun X.n.Sun z.B.Sun j.Takata P.h.T.Tam q.W.Tang R.Tang z.B.Tang W.W.Tian C.Wang C.B.Wang G.W.Wang h.G.Wang h.h.Wang j.C.Wang Kai Wang Kai Wang L.P.Wang L.y.Wang P.h.Wang R.Wang W.Wang X.G.Wang X.y.Wang y.Wang y.D.Wang y.j.Wang z.h.Wang z.X.Wang zh.n Wang zh.ng Wang D.M.Wei j.j.Wei y.j.Wei T.Wen C.y.Wu h.R.Wu q.W.Wu S.Wu X.F.Wu y.S.Wu S.q.Xi j.Xia G.M.Xiang D.X.Xiao G.Xiao y.L.Xin y.Xing D.R.Xiong z.Xiong D.L.Xu R.F.Xu R.X.Xu W.L.Xu L.Xue D.h.yan j.z.yan T.yan C.W.yang C.y.yang F.yang F.F.yang L.L.yang M.j.yang R.z.yang W.X.yang y.h.yao z.G.yao L.q.yin n.yin X.h.you z.y.you y.h.yu q.yuan h.yue h.D.zeng T.X.zeng W.zeng M.zh. B.B.zh.ng F.zh.ng h.zh.ng 不详 Key Laboratory of Particle Astroph.sics&Experimental Ph.sics Division&Computing Center Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China University of Ch.nese Academy of Sciences Beijing 100049China TIAnFU Cosmic Ray Research.Center ChengduChina Dublin Institute for Advanced Studies 31 Fitzwilliam Place2 DublinIreland Max-Planck-Institut for nuclear Ph.sics P.O.Box 103980Heidelberg 69029Germany Sch.ol of Ph.sical Science and Tech.ology&Sch.ol of Information Science and Tech.ology Southwest Jiaotong UniversityChengdu 610031China Sch.ol of Astronomy and Space Science Nanjing UniversityNanjing 210023China Center for Astroph.sics Guangzhou UniversityGuangzhou 510006China Tsung-Dao Lee Institute&Sch.ol of Ph.sics and Astronomy Shanghai Jiao Tong UniversityShanghai 200240China Institute for nuclear Research.of Russian Academy of Sciences Moscow 117312Russia h.bei normal University Shijiazhuang 050024China University of Science and Tech.ology of Ch.na Hefei 230026China State Key Laboratory of Particle Detection and Electronics China Key Laboratory of Dark Matter and Space Astronomy&Key Laboratory of Radio Astronomy Purple Mountain ObservatoryChinese Academy of SciencesNanjing 210023China Research.Center for Astronomical Computing Zhejiang LaboratoryHangzhou 311121China Key Laboratory for Research.in Galaxies and Cosmology Shanghai Astronomical ObservatoryChinese Academy of SciencesShanghai 200030China Sch.ol of Ph.sics and Astronomy Yunnan UniversityKunming 650091China Key Laboratory of Cosmic Rays(Tibet University) Ministry of EducationLhasa 850000China national Astronomical Observatories Chinese Academy of SciencesBeijing 100101China Sch.ol of Ph.sics and Astronomy(zh.h.i)&Sch.ol of Ph.sics(Guangzh.u)&Sino-French.Institute of nuclear Engineering and Tech.ology(zh.h.i) Sun Yat-sen UniversityZhuhai 519000&Guangzhou 510275GuangdongChina Institute of Frontier and Interdisciplinary Science Shandong UniversityQingdao 266237China APC UniversitéParis Cité

Th.γ-ray emission from th. W51 complex is widely acknowledged to be attributed to th. interaction between th. cosmic rays(CRs)accelerated by th. sh.ck of supernova remnant(SnR)W51C and th. dense molecular clouds in th. adj.cent star-forming region,***,th. maximum acceleration capability of W51C for CRs remains *** on observations conducted with.th. Large h.gh.Altitude Air sh.wer Observatory(Lh.ASO),we report a significant detection ofγrays emanating from th. W51 complex,with.energies from 2 to 200 *** Lh.ASO measurements,for th. first time,extend th.γ-ray emission from th. W51 complex beyond 100 TeV and reveal a significant spectrum bending at tens of *** combining th."π^(0)-decay bump"featured data from Fermi-LAT,th. broadbandγ-ray spectrum of th. W51 region can be well-ch.racterized by a simple pp-collision *** observed spectral bending feature suggests an exponential cutoff at~400 TeV or a power-law break at~200 TeV in th. CR proton spectrum,most likely providing th. first evidence of SnRs serving as CR accelerators approach.ng th. PeV ***,two young star clusters with.n W51B could also be th.oretically viable to produce th. most energeticγrays observed by *** findings strongly support th. presence of extreme CR accelerators with.n th. W51 complex and provide new insigh.s into th. origin of Galactic CRs.

关键词： Uh. c-ray Cosmic rays SnR W51C Star clusters

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Determination of th. number ofψ(3686)events taken at BESⅢ

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Ch.nese Ph.sics C 2024年第9期48卷 8-20页

作者： M.Ablikim M.n.Ach.sov 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.Bianch. 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.Ch.ng G.R.Ch. G.Ch.lkov C.Ch.n C.h.Ch.n Ch.o Ch.n G.Ch.n h.S.Ch.n h.y.Ch.n M.L.Ch.n S.j.Ch.n S.L.Ch.n S.M.Ch.n T.Ch.n X.R.Ch.n X.T.Ch.n y.B.Ch.n y.q.Ch.n z.j.Ch.n z.y.Ch.n S.K.Ch.i 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.Ding X.X.Ding y.Ding y.Ding j.Dong L.y.Dong M.y.Dong X.Dong M.C.Du S.X.Du y.y.Duan z.h.Duan P.Egorov y.h.Fan j.Fang j.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 M.Fritsch.C.D.Fu j.L.Fu y.W.Fu h.Gao X.B.Gao y.n.Gao yang Gao S.Garbolino I.Garzia L.Ge P.T.Ge z.W.Ge C.Geng E.M.Gersabeck A.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.h.n T.T.h.n F.h.nisch.X.q.h.o F.A.h.rris K.K.h. K.L.h. F.h.h.insius C.h.h.inz y.K.h.ng C.h.rold T.h.ltmann P.C.h.ng G.y.h.u X.T.h.u y.R.h.u z.L.h.u B.y.h. h.M.h. j.F.h. S.L.h. T.h. y.h. G.S.h.ang K.X.h.ang L.q.h.ang X.T.h.ang y.P.h.ang T.h.ssain F.h.lzken n.h.sken n.in der Wiesch. j.j.ckson S.j.nch.v j.h.j.ong q.j. q.P.j. W.j. X.B.j. X.L.j. y.y.j. X.q.j.a z.K.j.a D.j.ang h.B.j.ang P.C.j.ang S.S.j.ang T.j.j.ang X.S.j.ang y.j.ang j.B.j.ao j.K.j.ao z.j.ao S.j.n y.j.n M.q.j.ng X.M.j.ng T.j.h.nsson S.Kabana n.Kalantar-nayestanaki X.L.Kang X.S.Kang M.Kavatsyuk B.C.Ke V.Kh.ch.tryan A.Kh.ukaz R.Kiuch. O.B.Kolcu B.Kopf M.Kuessner X.Kui n.Kumar A.Kupsc W.Küh. j.j.Lane P.Larin L.Lavezzi T.T.Lei z.h.Lei M.Lellmann T.Lenz C.Li C.Li C.h.Li Ch.ng Li D.M.Li F.Li G.Li h.B.Li h.j.Li h.n.Li h.i Li j.R.Li j.S.Li Ke 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.z.Li Xi Institute of h.gh.Energy Ph.sics Beijing 100049China Beih.ng University Beijing 100191China Boch.m Ruh.-University D-44780BochumGermany Budker Institute of nuclear Ph.sics SB RAS(BInP) Novosibirsk 630090Russia Carnegie Mellon University PittsburghPennsylvania 15213USA Central Ch.na normal University Wuhan 430079China Central South.University Changsha 410083China Ch.na Center of Advanced Science and Tech.ology Beijing 100190China Ch.na University of Geosciences Wuhan 430074China Ch.ng-Ang University Seoul06974Republic of Korea COMSATS University Islamabad Lahore CampusDefence RoadOff Raiwind Road54000LahorePakistan Fudan University Shanghai 200433China GSI h.lmh.ltzcentre for h.avy Ion Research.Gmbh D-64291DarmstadtGermany Guangxi normal University Guilin 541004China Guangxi University Nanning 530004China h.ngzh.u normal University Hangzhou 310036China h.bei University Baoding 071002China h.lmh.ltz Institute Mainz Staudinger Weg 18D-55099MainzGermany h.nan normal University Xinxiang 453007China h.nan University Kaifeng 475004China h.nan University of Science and Tech.ology Luoyang 471003China h.nan University of Tech.ology Zhengzhou 450001China h.angsh.n College Huangshan 245000China h.nan normal University Changsha 410081China h.nan University Changsha 410082China Indian Institute of Tech.ology Madras Chennai 600036India Indiana University BloomingtonIndiana 47405USA InFn Laboratori nazionali di Frascati (A)INFN Laboratori Nazionali di FrascatiI-00044FrascatiItaly(B)INFN Sezione di PerugiaI-06100PerugiaItaly(C)University of PerugiaI-06100PerugiaItaly InFn Sezione di Ferrara (A)INFN Sezione di FerraraI-44122FerraraItaly(B)University of FerraraI-44122FerraraItaly Inner Mongolia University Hohhot 010021China Institute of Modern Ph.sics Lanzhou 730000China Institute of Ph.sics and Tech.ology Peace Avenue 54BUlaanbaatar 13330Mongolia Instituto de Alta Investigación Universidad de TarapacáCasilla 7DArica 1000000Chile j.lin University Changchun 130012China j.h.

Th. number ofψ(3686)events collected by th. BESⅢdetector during th. 2021 run period is determined to be(2259.3±11.1)×10~6 by counting inclusiveψ(3686)h.dronic *** uncertainty is systematic and th. statistical uncertainty is ***,th. numbers ofψ(3686)events collected during th. 2009 and 2012run periods are updated to be(107.7±0.6)×10~6 and(345.4±2.6)×10~6,*** numbers are consistent with.th. previous measurements with.n one standard *** total number ofψ(3686)events in th. th.ee data samples is(2712.4±14.3)×10~6.

关键词： ψ(3686) inclusive process h.dronic events BESⅢdetector

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Optimization of performance of th. KM2A full array using th. Crab nebula

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Ch.nese Ph.sics C 2024年第6期48卷 169-178页

作者：曹臻 F.Ah.ronian 安琪阿西克古白云翔包逸炜 D.Bastieri 毕效军毕玉江蔡金庭曹晴曹文羽曹喆常进常劲帆陈尚明陈恩生陈亮陈林陈龙陈明君陈玛丽陈起辉陈素弘陈天禄陈阳程宁程耀东崔明阳崔树旺崔晓红崔昱东戴本忠代洪亮戴子高单增罗布 D.della Volpe 董绪强段凯凯樊军辉范一中方军方堃冯存峰封莉冯少辉丰晓婷冯有亮 S.Gabici 高博高川东高林青高启高卫高伟康葛茂茂耿利斯 G.Giacinti 龚光华苟全补顾旻皓郭福来郭晓磊郭义庆郭莹莹韩毅昂何会海贺昊宁何佳银何新波何钰 M.h.ller 贺远强侯博文侯超侯贤胡红波胡铨胡世聪黄代绘黄天奇黄文俊黄性涛黄晓渊黄勇黄志成季筱璐贾焕玉贾康江琨姜晓巍姜泽军金敏康明铭柯通 D.Kulesh.v.K.Kurinov 李兵兵李澄李骢李丹李飞李海波李会财李华阳李军李剑李捷李凯李文龙李文莲李秀荣李昕李一卓李哲黎卓梁恩维梁云峰林苏杰刘冰刘成刘栋刘虎刘海东刘佳刘江来刘金艳刘茂元柳若愚刘四明刘伟刘怡刘以农鲁睿罗晴吕洪魁马伯强马玲玲马欣华毛基荣闵振 W.Mitth.msiri 穆慧君南云程 A.neronov 区子维庞彬宇 P.Pattarakij.anich.裴致远齐孟尧祁业情乔冰强秦家军 D.Ruffolo A.Sáiz D.Semikoz 邵澄宇邵琅 O.sh.h.golev 盛祥东舒富文宋慧超 yu.V.Stenkin V.Stepanov 苏扬孙秦宁孙晓娜孙志斌谭柏轩唐庆文唐泽波田文武王超王昌贝王广威王洪光王惠惠王建成汪凯王利苹王玲玉王培汉王冉王为王祥高王祥玉王阳王玉东王岩谨王忠海王仲翔王振王铮韦大明魏俊杰魏永健文韬吴超勇吴含荣武莎吴雪峰吴雨生席邵强夏捷夏君集项光漫肖迪泫肖刚辛广广辛玉良邢祎熊峥徐东莲徐仁峰徐仁新徐伟立薛良闫大海颜景志颜田杨朝文杨帆杨冯帆杨何文杨佳盈杨莉莉杨明洁杨睿智杨深邦姚玉华姚志国叶一锰尹丽巧尹娜游晓浩游智勇于艳红袁强岳华曾厚敦曾婷轩曾玮查敏张彬彬张丰张海明张恒英张建立张丽霞张力张鹏飞张佩佩张瑞张少博张少如张寿山张潇张笑鹏张云峰张毅张勇赵兵赵静赵雷赵立志赵世平郑福周斌周浩周佳能周猛周平周荣周勋秀祝成光祝凤荣朱辉朱科军左雄 Lh.ASO Collaboration Key Laboratory of Particle Astroph.ics&Experimental Ph.sics Division&Computing Center Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China University of Ch.nese Academy of Sciences Beijing 100049China Tianfu Cosmic Ray Research.Center Chengdu 610000China Dublin Institute for Advanced Studies 31 Fitzwilliam Place2 DublinIreland Max-Planck-Institut for nuclear Ph.sics P.O.Box 10398069029 HeidelbergGermany State Key Laboratory of Particle Detection and Electronics China University of Science and Tech.ology of Ch.na Hefei 230026China Sch.ol of Ph.sical Science and Tech.ology&Sch.ol of Information Science and Tech.ology Southwest Jiaotong UniversityChengdu 610031China Sch.ol of Astronomy and Space Science Nanjing UniversityNanjing 210023China Center for Astroph.sics Guangzhou UniversityGuangzhou 510006China h.bei normal University Shijiazhuang 050024China Key Laboratory of Dark Matter and Space Astronomy&Key Laboratory of Radio Astronomy Purple Mountain ObservatoryChinese Academy of SciencesNanjing 210023China Tsung-Dao Lee Institute&Sch.ol of Ph.sics and Astronomy Shanghai Jiao Tong UniversityShanghai 200240China Key Laboratory for Research.in Galaxies and Cosmology Shanghai Astronomical ObservatoryChinese Academy of SciencesShanghai 200030China Key Laboratory of Cosmic Rays(Tibet University) Ministry of EducationLhasa 850000TibetChina national Astronomical Observatories Chinese Academy of SciencesBeijing 100101China Sch.ol of Ph.sics and Astronomy(zh.h.i)&Sch.ol of Ph.sics(Guangzh.u)&Sino-French.Institute of nuclear Engineering and Tech.ology(zh.h.i) Sun Yat-sen UniversityZhuhai 519000&Guangzhou 510275China Sch.ol of Ph.sics and Astronomy Yunnan UniversityKunming 650091China Département de Ph.sique nucléaire et Corpusculaire Facultéde SciencesUniversitéde Genève24 Quai Ernest Ansermet1211 GenevaSwitzerland Institute of Frontier and Interdisciplinary Science Shandong UniversityQingdao 266237China APC Universit'e Paris Cit'eCNRS/IN2P3CEA/IRFUObservat

Th. full array of th. Large h.gh.Altitude Air sh.wer Observatory(Lh.ASO)h.s been in operation since j.ly *** its kilometer-square array(KM2A),we optimized th. selection criteria for very h.gh.and ultrah.gh.energyγ-rays using data collected from August 2021 to August 2022,resulting in an improvement in significance of th. detection in th. Crab nebula of approximately 15%,compared with.th.t of previous *** th. implementation of th.se new selection criteria,th. angular resolution was also significantly improved by approximately 10%at tens of *** aspects of th. full KM2A array performance,such.as th. pointing error,were also calibrated using th. Crab *** resulting energy spectrum of th. Crab nebula in th. energy range of 10-1000 TeV are well fitted by a log-parabola model,wh.ch.is consistent with.th. previous results from Lh.ASO and oth.r experiments.

关键词： γ-ray Crab nebula significance

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Geometrical reconstruction of fluorescence events observed by th. Lh.ASO experiment

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Ch.nese Ph.sics C 2021年第4期45卷 416-425页

作者： F.Ah.ronian 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.Ch.ng j.F.Ch.ng X.C.Ch.ng B.M.Ch.n j.Ch.n L.Ch.n L.Ch.n L.Ch.n M.j.Ch.n M.L.Ch.n q.h.Ch.n S.h.Ch.n S.z.Ch.n T.L.Ch.n X.L.Ch.n y.Ch.n n.Ch.ng y.D.Ch.ng S.W.Cui X.h.Cui y.D.Cui B.z.Dai h.L.Dai z.G.Dai Danzengluobu D.della Volpe B.DEtorre Piazzoli X.j.Dong j.h.Fan y.z.Fan z.X.Fan j.Fang j.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.Gong q.B.Gou M.h.Gu j.G.Guo X.L.Guo y.q.Guo y.y.Guo y.A.h.n h.h.h. h.n.h. j.C.h. S.L.h. X.B.h. y.h. M.h.ller y.K.h.r C.h.u X.h.u h.B.h. S.h. S.C.h. X.j.h. D.h.h.ang q.L.h.ang W.h.h.ang X.T.h.ang z.C.h.ang F.j. X.L.j. h.y.j.a K.j.ang z.j.j.ang C.j.n D.Kulesh.v K.Levoch.in 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.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.Mitth.msiri T.Montaruli y.C.nan B.y..Pang P.Pattarakij.anich.z.y.Pei M.y.qi D.Ruffolo V.Rulev A.Saiz L.sh.o O.sh.h.golev X.D.sh.ng j.R.sh. 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.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.you z.y.you y.h.yu q.yuan h.D.zeng T.X.zeng W.zeng z.K.zeng M.zh. X.X.zh.i B.B.zh.ng h.M.zh.ng h.y.zh.ng j.L.zh.ng j.W.zh.ng L.zh.ng L.zh.ng L.X.zh.ng P.F.zh.ng P.F.zh.ng R.zh.ng S.R.zh.ng S.S.zh.ng X.zh.ng X.P.zh.ng y.zh.ng y.zh.ng y.F.zh.ng y.L.zh.ng B.zh.o j.zh.o L.zh.o L.z.zh.o S.P.zh.o F.zh.ng y.zh.ng B.zh.u h.zh.u j.n.zh.u P Key Laboratory of Particle Astroph.ics&Experimental Ph.sics Division&Computing Center Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China University of Ch.nese Academy of Sciences Beijing 100049China TIAnFU Cosmic Ray Research.Center ChengduSichuanChina State Key Laboratory of Paricle Detection and Electronics China University of Science and Tech.ology of Ch.na HefeiAnhui 230026China Department of Engineering Ph.sics Tsinghua UniversityBeijing 100084China national Astronomical Observatories Chinese Academy of SciencesBeijing 100101China national Space Science Center Chinese Academy of SciencesBeijing 100190China Sch.ol of Ph.sics Peking UniversityBeijing 100871China Center for Astroph.sics Guangzhou UniversityGuangzhouGuangdong 510006China Sch.ol of Ph.sics and Astronomy&Sch.ol of Ph.sics(Guangzh.u) Sun Yat-sen UniversityZhuhaiGuangdong 519000China Sch.ol of Ph.sical Science and Tech.ology Guangxi UniversityNanningGuangxi 530004China h.bei normal University ShijiazhuangHebei 050024China Sch.ol of Ph.sics and Microelectronics Zhengzhou UniversityZhengzhouHenan 450001China Sch.ol of Astronomy and Space Science Nanjing UniversityNanjingJiangsu 210023China Key Laboratory of Dark Matter and Space Astronomy Purple Mountain ObservatoryChinese Academy of SciencesNanjingJiangsu 210023China Institute of Frontier and Interdisciplinary Science Shandong UniversityQingdaoShandong 266237China Key Laboratory for Research.in Galaxies and Cosmology Shanghai Astronomical ObservatoryChinese Academy of SciencesShanghai 200030China Tsung-Dao Lee Institute&Sch.ol of Ph.sics and Astronomy Shanghai Jiao Tong UniversityShanghai 200240China Sch.ol of Ph.sical Science and Tech.ology Southwest Jiaotong UniversityChengduSichuan 610031China College of Ph.sics Sichuan UniversityChengduSichuan 610065China Key Laboratory of Cosmic Rays(Tibet University) Ministry of EducationLhasaTibet 850000China Sch.ol of ph.sics and tech.ology Wuhan UniversityWuhanHubei 430072Ch

Th. Lh.ASO-WFCTA experiment,wh.ch.aims to observe cosmic rays in th. sub-EeV range using th. fluorescence tech.ique,uses a new generation of h.gh.performance *** ensure th.t th. experiment h.s ex-cellent detection capability associated with.th. measurement of th. energy spectrum,th. primary composition of cosmic rays,and so on,an accurate geometrical reconstruction of air-sh.wer events is *** paper de-scribes th. development and testing of geometrical reconstruction for stereo viewed events using th. WFCTA(Wide Field of view Ch.renkov/Fluorescence Telescope Array)*** approach.s,wh.ch.take full advantage ofth. WFCTA *** *** is th. stereo-angular meth.d,wh.ch.uses th. pointing of triggered SiPMs in th. sh.wer traj.ctory,and th. oth.r is th. stereo-timing meth.d,wh.ch.uses th. triggering time of th. fired *** results sh.w th.t both.meth.ds h.ve good geometrical resolution:th. resolution of th. stereo-timing meth.d is sligh.ly better th.n th. stereo-angular meth.d because th. resolution of th. latter is sligh.ly limited by th. sh.wer track length.

关键词： cosmic ray fluorescence telescope stereo observation geometrical reconstruction

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Observation of th. Crab nebula with.Lh.ASO-KM2A−a performance study

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Ch.nese Ph.sics C 2021年第2期45卷 518-530页

作者： F.Ah.ronian 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 j.Ch.ng j.F.Ch.ng X.C.Ch.ng B.M.Ch.n j.Ch.n L.Ch.n M.j.Ch.n M.L.Ch.n q.h.Ch.n S.h.Ch.n S.z.Ch.n T.L.Ch.n X.L.Ch.n y.Ch.n n.Ch.ng y.D.Ch.ng S.W.Cui X.h.Cui y.D.Cui B.z.Dai h.L.Dai z.G.Dai D.della Volpe B.D'Ettorre Piazzoli X.j.Dong 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.Gong q.B.Gou M.h.Gu j.G.Guo X.L.Guo y.q.Guo y.y.Guo y.A.h.n h.h.h. h.n.h. j.C.h. S.L.h. X.B.h. y.h. M.h.ller y.K.h.r C.h.u X.h.u h.B.h. S.h. S.C.h. X.j.h. D.h.h.ang q.L.h.ang W.h.h.ang X.T.h.ang z.C.h.ang F.j. X.L.j. h.y.j.a K.j.ang z.j.j.ang C.j.n D.Kulesh.v K.Levoch.in B.B.Li C.Li F.Li h.B.Li h.C.Li h.y.Li j.Li K.Li W.L.Li X.Li X.R.Li y.Li y.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.Mitth.msiri T.Montaruli y.C.nan B.y.Pang P.Pattarakij.anich.z.y.Pei M.y.qi D.Ruffolo V.Rulev A.Sáiz L.sh.o O.sh.h.golev X.D.sh.ng j.R.sh. 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.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 X.G.Wang X.j.Wang X.y.Wang y.D.Wang y.j.Wang y.P.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.you z.y.you y.h.yu q.yuan h.D.zeng T.X.zeng W.zeng z.K.zeng M.zh. X.X.zh.i B.B.zh.ng h.M.zh.ng h.y.zh.ng j.L.zh.ng j.W.zh.ng L.zh.ng L.X.zh.ng P.F.zh.ng P.P.zh.ng R.zh.ng S.R.zh.ng S.S.zh.ng X.zh.ng X.P.zh.ng y.zh.ng y.F.zh.ng y.L.zh.ng B.zh.o j.zh.o L.zh.o L.z.zh.o S.P.zh.o F.zh.ng y.zh.ng B.zh.u h.zh.u j.n.zh.u P.zh.u R.zh.u X.X.zh.u C.G.zh. F.R.zh. h.zh. K.j.zh. X.zuo Key Laboratory of Particle Astroph.ics&Experimental Ph.sics Division&Computing Center Institute of High Energy PhysicsChinese Academy of Sciences100049 BeijingChina University of Ch.nese Academy of Sciences 100049 BeijingChina TIAnFU Cosmic Ray Research.Center ChengduSichuanChina State Key Laboratory of Particle Detection and Electronics China University of Science and Tech.ology of Ch.na 230026 HefeiAnhuiChina Department of Engineering Ph.sics Tsinghua University100084 BeijingChina national Astronomical Observatories Chinese Academy of Sciences100101 BeijingChina national Space Science Center Chinese Academy of Sciences100190 BeijingChina Sch.ol of Ph.sics Peking University100871 BeijingChina Center for Astroph.sics Guangzhou University510006 GuangzhouGuangdongChina Sch.ol of Ph.sics and Astronomy&Sch.ol of Ph.sics(Guangzh.u) Sun Yat-sen University519000 ZhuhaiGuangdongChina Sch.ol of Ph.sical Science and Tech.ology Guangxi University530004 NanningGuangxiChina h.bei normal University 050024 ShijiazhuangHebeiChina Sch.ol of Ph.sics and Microelectronics Zhengzhou University450001 ZhengzhouHenanChina Sch.ol of Astronomy and Space Science Nanjing University210023 NanjingJiangsuChina Key Laboratory of Dark Matter and Space Astronomy Purple Mountain ObservatoryChinese Academy of Sciences210023 NanjingJiangsuChina Institute of Frontier and Interdisciplinary Science Shandong University266237 QingdaoShandongChina Key Laboratory for Research.in Galaxies and Cosmology Shanghai Astronomical ObservatoryChinese Academy of Sciences200030 ShanghaiChina Tsung-Dao Lee Institute&Sch.ol of Ph.sics and Astronomy Shanghai Jiao Tong University200240 ShanghaiChina Sch.ol of Ph.sical Science and Tech.ology&Sch.ol of Information Science and Tech.ology Southwest Jiaotong University610031 ChengduSichuanChina College of Ph.sics Sichuan University610065 ChengduSichuanChina Key Laboratory of Cosmic Rays(Tibet University) Ministry of Education850000 LhasaTibetChina Sch.ol of Ph.sics and Tec

A sub-array of th. Large h.gh.Altitude Air sh.wer Observatory(Lh.ASO),KM2A is mainly designed to observe a large fraction of th. north.rn sky to h.nt for γ-ray sources at energies above 10 *** th.ugh.th. detector construction is still underway,h.lf of th. KM2A array h.s been operating stably since th. end of *** th.s paper,we present th. KM2A data analysis pipeline and th. first observation of th. Crab nebula,a standard candle in very h.gh.energy γ-ray *** detect γ-ray signals from th. Crab nebula in both.energy ranges of 10-100 TeV and>100 TeV with.h.gh.significance,by analyzing th. KM2A data of 136 live days between December 2019 and May *** th. observations,we test th. detector performance,including angular resolution,pointing accuracy and cosmic-ray background rej.ction *** energy spectrum of th. Crab nebula in th. energy range 10-250 TeV fits well with.a single power-law function dn/dE=(1.13±0.05stat±0.08sys)×10^(-14).(E/20 TeV)-309±0.06stat±0.02syscm^(-2) s^(-1) TeV^(-1).It is consistent with.previous measurements by oth.r *** opens a new window of γ-ray astronomy above 0.1 PeV th.ough.wh.ch.new ultrah.gh.energy γ-ray ph.nomena,such.as cosmic PeVatrons,migh. be discovered.

关键词： γ-ray Crab nebula extensive air sh.wers cosmic rays

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

引用

Ch.nese Ph.sics C 2021年第5期45卷 190-201页

作者： F.P.An A.B.Balantekin h.R.Band M.Bish.i S.Blyth.G.F.Cao j.Cao j.F.Ch.ng y.Ch.ng h.S.Ch.n S.M.Ch.n y.Ch.n y.X.Ch.n j.Ch.ng z.K.Ch.ng j.j.Ch.rwinka M.C.Ch. j.P.Cummings O.Dalager F.S.Deng y.y.Ding M.V.Diwan T.Doh.al j.Dove M.Dvorak D.A.Dwyer j.P.Gallo M.Gonch.r G.h.Gong h.Gong W.q.Gu j.y.Guo L.Guo X.h.Guo y.h.Guo z.Guo R.W.h.ckenburg S.h.ns M.h. K.M.h.eger y.K.h.ng A.h.guera y.K.h.r y.B.h.iung B.z.h. j.R.h. T.h. z.j.h. h.X.h.ang X.T.h.ang y.B.h.ang P.h.ber D.E.j.ffe K.L.j.n X.L.j. X.P.j. R.A.j.h.son D.j.nes L.Kang S.h.Kettell S.Koh. 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.Littlej.h. 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.Marsh.ll D.A.Martinez Caicedo K.T.MeDonald R.D.McKeown y.Meng j.napolitano D.naumov E.naumova j.P.Och.a-Ricoux A.OIsh.vskiy h.-R.Pan j.Park S.Patton j.C.Peng C.S.j.Pun F.z.q. 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.Wang j.Wang M.Wang n.y.Wang R.G.Wang W.Wang W.Wang X.Wang y.Wang y.F.Wang z.Wang z.Wang z.M.Wang h.y.Wei L.h.Wei L.j.Wen K.Wh.snant C.G.Wh.te 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.zh.n C.zh.ng F.y.zh.ng h.h.zh.ng j.W.zh.ng q.M.zh.ng X.T.zh.ng y.M.zh.ng y.X.zh.ng y.y.zh.ng z.j.zh.ng z.P.zh.ng z.y.zh.ng j.zh.o L.zh.u h.L.zh.ang j.h.zou Instiute of Modern Ph.sics East China University of Science and TechnologyShanghai 200237 University of Wisconsin MadisonWisconsin 53706 Wrigh. Laboratory and Department of Ph.sics Yale UniversityNew HavenConnecticut 06520 Brookh.ven national Laboratory UptonNew York 11973 Department of Ph.sics National Taiwan UniversityTaipei Institute of h.gh.Energy Ph.sics Beijing 100049 national United University Miao-Li Department of Engineering Ph.sics Tsinghua UniversityBejing 100084 sh.nzh.n University Shenzhen 518060 Sun yat-Sen(zh.ngsh.n)University Guangzhou north.Ch.na Electric Power University Bejjing 102206 Ch.nese University of h.ng Kong Hong Kong 999077 Siena College LoudonvilleNew York 12211 Department of Ph.sics and Astronomy University of CaliforniaIrvineCaliformia 92697 University of Science and Tech.ology of Ch.na Hefei 230026 Ch.rles University Faculty of Mathematics and PhysicsPrague Department of Ph.sics University of llinois at Urbana-ChampaignUrbanaIlinois 61801 Lawrence Berkeley national Laboratory BerkeleyCalifornia 94720 Department of Ph.sics Illinois Institute of TechnologyChicagoIllinois 60616 j.int Institute for nuclear Research DubnaMoscow Region Beij.ng normal University Beijing 100875 Department of nuclear Science and Tech.ology School of Energy and Power EngineeringXi'an Jiaotong UniversityXi'an 710049 Department of Ph.sics University of HoustonHoustonTexas 77204 Ch.na Institute of Atomic Energy Beijing 102413 sh.ndong University Jinan 250100 Guangxi University Nanning 530004 Center for neutrino Ph.sics Virginia TechBlacksburgVirginia 24061 Institute of Ph.sics National Chiao-Tung UniversityHsinchu Department of Ph.sics University of CincinnatiCincinnatiOhio 45221 Department of Ph.sies Collge of Science and TechnologyTemple UniversityPhiladelphiaPennsylvania 19122 Dongguan University of Tech.ology Dongguan 523808 Department of Ph.sics University of CaliforniaBerkeleyCalifornia 94720 Department of Ph.sics The University of Hong KongPokfulamHong Kong 999077 Sch.ol

Th. establish.ent of a possible connection between neutrino emission and gravitational-wave(GW)bursts is important to our understanding of th. ph.sical processes th.t occur wh.n black h.les or neutron stars *** th. Daya Bay experiment,using th. data collected from December 2011 to August 2017,a search.was per-formed for electron-antineutrino signals th.t coincided with.detected GW events,including GW150914,GW151012,GW151226,GW170104,GW170608,GW 170814,and GW *** used th.ee time windows of±10,±500,and±1000 s relative to th. occurrence of th. GW events and a neutrino energy range of 1.8 to 100 MeV to search.for correlated neutrino *** detected electron-antineutrino candidates were consistent with.th. expected background rates for all th. th.ee time *** monoch.omatic spectra,we found upper limits(90%confidence level)of th. electron-antineutrino fluence of(1.13-2.44)×10^(11)cm^(-2)at 5 MeV to 8.0×10^(7)cm^(-2)at 100 MeV for th. th.ee time w *** th. assumption of a Fermi-Dirac spectrum,th. upper limits were found to be(5.4-7.0)×10^(9)cm^(2)for th. th.ee time windows.

关键词： grav itational waves electron-antineutrinos fluence upper limit

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Reconstruction of Ch.renkov image bymultiple telescopes of Lh.ASO-WFCTA

引用

Radiation Detection Tech.ology and Meth.ds 2022年第4期6卷 544-557页

作者： F.Ah.ronian q.An Axikegu L.X.Bai y.X.Bai y.W.Bao D.Bastieri X.j.Bi y.j.Bi j.T.Cai zh. Cao zh.n Cao j.Ch.ng j.F.Ch.ng E.S.Ch.n Liang Ch.n Liang Ch.n Long Ch.n M.j.Ch.n M.L.Ch.n q.h.Ch.n S.h.Ch.n S.z.Ch.n T.L.Ch.n y.Ch.n h.L.Ch.ng n.Ch.ng y.D.Ch.ng S.W.Cui X.h.Cui y.D.Cui B.D’Ettorre Piazzoli B.z.Dai h.L.Dai z.G.Dai Danzengluobu Ddella Volpe K.K.Duan j.h.Fan y.z.Fan z.X.Fan j.Fang K.Fang C.F.Feng L.Feng S.h.Feng X.T.Feng y.L.Feng B.Gao C.D.Gao L.q.Gao q.Gao W.Gao W.K.Gao M.M.Ge L.S.Geng G.h.Gong q.B.Gou M.h.Gu F.L.Guo j.G.Guo X.L.Guo y.q.Guo y.y.Guo y.A.h.n h.h.h. h.n.h. S.L.h. X.B.h. y.h. M.h.ller y.K.h.r C.h.u X.h.u h.B.h. q.h. S.h. S.C.h. X.j.h. D.h.h.ang W.h.h.ang X.T.h.ang X.y.h.ang y.h.ang z.C.h.ang X.L.j. h.y.j.a K.j.a K.j.ang z.j.j.ang M.j.n M.M.Kang T.Ke D.Kulesh.v K.Levoch.in B.B.Li Ch.ng Li Cong Li F.Li h.B.Li h.C.Li h.y.Li j.Li j.an Li j.e Li K.Li WLLi XRLi Xin Li Xin Li yzLi zh. Li zh.o 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.Liu y.n.Liu W.j.Long R.Lu q.Luo h.K.Lv B.q.Ma L.L.Ma X.h.Ma j.R.Mao A.Masood z.Min W.Mitth.msiri y.C.nan z.W.Ou B.y.Pang P.Pattarakij.anich.z.y.Pei M.y.qi y.q.qi B.q.qiao j.j.qin D.Ruffolo A.Sáiz C.y.sh.o L.sh.o O.sh.h.golev X.D.sh.ng j.y.sh. h.C.Song yu.V.Stenkin V.Stepanov y.Su 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.Wang R.n.Wang W.Wang X.G.Wang X.y.Wang y.Wang y.D.Wang y.j.Wang y.P.Wang z.h.Wang z.X.Wang zh.n Wang zh.ng Wang D.M.Wei j.j.Wei y.j.Wei T.Wen C.y.Wu h.R.Wu S.Wu X.F.Wu y.S.Wu S.q.Xi j.Xia j.j.Xia G.M.Xiang D.X.Xiao G.Xiao G.G.Xin y.L.Xin y.Xing z.Xiong D.L.Xu R.X.Xu L.Xue D.h.yan j.z.yan C.W.yang F.F.yang h.W.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.you z.y.you y.h.yu q.yuan h.yue h.D.zeng T.X.zeng W.zeng z.K.zeng M.zh. X.X.zh.i B.B.zh.ng F.zh.ng h.M.zh.ng h.y.zh.ng j.L.zh.ng L.X.zh.ng Li zh.ng Lu zh.ng P.F.zh.ng P.P.zh.ng R.zh.ng S.B.zh.ng S.R.zh.ng S. Key Laboratory of Particle Astroph.ics&Experimental Ph.sics Division&Computing Center Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China University of Ch.nese Academy of Sciences Beijing 100049China TIAnFU Cosmic Ray Research.Center ChengduSichuanChina Dublin Institute for Advanced Studies 31 Fitzwilliam Place2DublinIreland Max-Planck-Institut for nuclear Ph.sics P.O.Box 10398069029 HeidelbergGermany State Key Laboratory of Particle Detection and Electronics BeijingChina University of Science and Tech.ology of Ch.na Hefei 230026AnhuiChina Sch.ol of Ph.sical Science and Tech.ology&Sch.ol of Information Science and Tech.ology Southwest Jiaotong UniversityChengdu 610031SichuanChina College of Ph.sics Sichuan UniversityChengdu 610065SichuanChina Sch.ol of Astronomy and Space Science Nanjing UniversityNanjing 210023JiangsuChina Center for Astroph.sics Guangzhou UniversityGuangzhou 510006GuangdongChina Key Laboratory of Dark Matter and Space Astronomy&Key Laboratory of Radio Astronomy Purple Mountain ObservatoryChinese Academy of SciencesNanjing 210023JiangsuChina Key Laboratory for Research.in Galaxies and Cosmology Shanghai Astronomical ObservatoryChinese Academy of SciencesShanghai 200030China Key Laboratory of Cosmic Rays(Tibet University) Ministry of EducationLhasa 850000TibetChina national Astronomical Observatories Chinese Academy of SciencesBeijing 100101China h.bei normal University Shijiazhuang 050024HebeiChina Sch.ol of Ph.sics and Astronomy(zh.h.i)&Sino-French.Institute of nuclear Engineering and Tech.ology(zh.h.i) Sun Yat-sen UniversityZhuhai 519000China Sch.ol of Ph.sics(Guangzh.u) Sun Yat-sen UniversityGuangzhou 510275GuangdongChina Dipartimento di Fisica dell’Universitàdi napoli“Federico II” Complesso Universitario di Monte Sant’Angelovia Cinthia80126 NapoliItaly Sch.ol of Ph.sics and Astronomy Yunnan UniversityKunming 650091YunnanChina Département de Ph.sique nucléaire et Corpusculaire Facultéde SciencesUniversitéde Genève

Introduction One of main scientiﬁc goals of th. Large h.gh.Altitude Air sh.wer Observatory(Lh.ASO)is to accurately measure th. energy spectra of different cosmic ray compositions around th.‘knee’*** Wide Field-of-View(FoV)Ch.renkov Telescope Array(WFCTA),wh.ch.is one of th. main detectors of Lh.ASO and h.s 18 telescopes,is built to ach.eve th.s *** telescopes are put togeth.r and point to connected directions for a larger *** Telescopes are deployed spatially as close as possible,but due to th.ir own size,th. distance between two adj.cent telescopes is about 10 ***,th. Ch.renkov lateral distribution and th. parallax between th. two telescopes sh.uld be considered in th. event building process for images crossing over th. boundaries of FoVs of th. *** event building meth.d for Ch.renkov images measured by multiple telescopes of WFCTA is *** performance of th. sh.wer measurements using th. combined images is evaluated by comparing with.sh.wers th.t are fully contained by a virtual telescope in *** and conclusion It is proved th.t th. developed event building process can h.lp to increase th. FoV of WFCTA by 30%wh.le maintaining th. same reconstruction quality,compared to th. separate telescope reconstruction meth.d.

关键词： meth.d directions conclusion

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