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Search for Steady Emission of 10—TeV Gamma Rays from the Crab Nebula,Cygnus X—3,and Hercules X—1 Using the Tibet Air Shower Array

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西藏大学学报(社会科学版) 1993年第4期8卷 71-75页

作者： M.Amenomori Z.Cao.L.K.Ding Z.Y.Feng K.Hibino N.Hotta Q.Huang A.X.Huo H.Y.Jia G.Z.Jiang S.Q.Jiao F.Kajino K.Kasahara Labaciren D.M.Mei L.Meng X.R.Meng Mimaeiren K.Mizutani J.Mu H.Nanjo M.Nishizawa Nusang A.Oguro M.Ohnishi I.Ohta J.R.Ren To.saito M.Sakata Z.Z.Shi M.Shibata T.shirai H.sugimoto X.X.Sun A.Tai K.Taira Y.H.Tan N.Tateyama S.Torii H.Wang C.Z.Wen Y.Yamamoto X.Y.Yao G.C.Yu P.Yuan T.Yuda J.G.Zeng C.S.Zhang H.M.Zhang L.Zhang Zhasang Zhaxlclren W.D.Zhou Department of Physics Hirosaki UniuersityHirosakiJapan Institute of High Energy Physics Academia SinicaBeijingChina Department of Physics South West Jiaotong UniuersityChengduChina Institute for Cosmic Ray Research Uniuersity of TokyoTanashiJapan Faculty of Education Utsunomiya UniuersityUtsunomiyaJapan Departmem of Physics Konan UniuersityDepartmem of PhysicsKonan UniuersityKobeJapan Faculty of Engireering Kanagawa UniversityYokohamaJapan Department of Mathematics and Physics Tibet UniuersityLhasaChina Department of Physics Saitama UniuersityUrawaJapan Department of Physics Yunnan UniuersityKunmingChina Faculty of Education Yokohama National UniuersityYokohamaJapan Shonan Institute of Technology FujisawaJapan

寻找到高能和超高能的Gamma射线点源,在宇宙射线源方面有着极为重要的意义,本文就西藏羊八井观测到的空气簇射阵列及共它资料,对寻找稳定的10-TeV Gamma射线进行了分析论述。

关键词：西藏空气簇射 Gamma射线点源大气厚度 10TeV

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Performance and calibration of quark/gluon-jet taggers using 140 fb^(-1) of pp collisions at √s=13 TeV with the ATLAS detector

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Chinese Physics C 2024年第2期48卷 1-25页

作者： G. Aad B. Abbott K. Abeling N.J. Abicht S.H. Abidi A. Aboulhorma H. Abramowicz H. Abreu Y. Abulaiti B.S. Acharya C. Adam Bourdarios L. Adamczyk S.V. Addepalli M.J. Addison J. Adelman A. Adiguzel T. Adye A.A. Affolder Y. Afik M.N. Agaras J. Agarwala A. Aggarwal C. Agheorghiesei A. Ahmad F. Ahmadov W.S. Ahmed S. Ahuja X. Ai G. Aielli A. Aikot M. Ait Tamlihat B. Aitbenchikh I. Aizenberg M. Akbiyik T.P.A. Åkesson A.V. Akimov D. Akiyama N.N. Akolkar K. Al Khoury G.L. Alberghi J. Albert P. Albicocco G.L. Albouy S. Alderweireldt M. Aleksa I.N. Aleksandrov C. Alexa T. Alexopoulos F. Alfonsi M. Algren M. Alhroob B. Ali H.M.J. Ali S. Ali S.W. Alibocus M. Aliev G. Alimonti W. Alkakhi C. Allaire B.M.M. Allbrooke J.F. Allen C.A. Allendes Flores P.P. Allport A. Aloisio F. Alonso C. Alpigiani M. Alvarez Estevez A. Alvarez Fernandez M. Alves Cardoso M.G. Alviggi M. Aly Y. Amaral Coutinho A. Ambler C. Amelung M. Amerl C.G. Ames D. Amidei S.P. Amor Dos Santos K.R. Amos V. Ananiev C. Anastopoulos T. Andeen J.K. Anders S.Y. Andrean A. Andreazza S. Angelidakis A. Angerami A.V. Anisenkov A. Annovi C. Antel M.T. Anthony E. Antipov M. Antonelli F. Anulli M. Aoki T. Aoki J.A. Aparisi Pozo M.A. Aparo L. Aperio Bella C. Appelt A. Apyan N. Aranzabal S.J. Arbiol Val C. Arcangeletti A.T.H. Arce E. Arena J-F. Arguin S. Argyropoulos J.-H. Arling O. Arnaez H. Arnold G. Artoni H. Asada K. Asai S. Asai N.A. Asbah J. Assahsah K. Assamagan R. Astalos S. Atashi R.J. Atkin M. Atkinson H. Atmani P.A. Atmasiddha K. Augsten S. Auricchio A.D. Auriol V.A. Austrup G. Avolio K. Axiotis G. Azuelos D. Babal H. Bachacou K. Bachas A. Bachiu F. Backman A. Badea P. Bagnaia M. Bahmani A.J. Bailey V.R. Bailey J.T. Baines L. Baines O.K. Baker E. Bakos D. Bakshi Gupta V. Balakrishnan R. Balasubramanian E.M. Baldin P. Balek E. Ballabene F. Balli L.M. Baltes W.K. Balunas J. Balz E. Banas M. Bandieramonte A. Bandyopadhyay S. Bansal L. Barak M. Barakat E.L. Barberio D. Barberis M. Barbero M.Z. Barel K.N. Barends T. Barillari M-S. Barisits T. Barklow P. Baron D.A. Baron Mo The ATLAS Collaboration

The identification of jets originating from quarks and gluons,often referred to as quark/gluon tagging,plays an important role in various analyses performed at the Large Hadron Collider,as Standard Model measurements and searches for new particles decaying to quarks often rely on suppressing a large gluon-induced *** paper describes the measurement of the efficiencies of quark/gluon taggers developed within the ATLAS Collaboration,using √s=13 TeV proton–proton collision data with an integrated luminosity of 140 fb^(-1) collected by the ATLAS *** taggers with high performances in rejecting jets from gluon over jets from quarks are studied:one tagger is based on requirements on the number of inner-detector tracks associated with the jet,and the other combines several jet substructure observables using a boosted decision tree.A method is established to determine the quark/gluon fraction in data,by using quark/gluon-enriched subsamples defined by the jet *** in tagging efficiency between data and simulation are provided for jets with transverse momentum between 500 GeV and 2 TeV and for multiple tagger working points.

关键词： ATLAS JET QUARK GLUON TAGGING

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