Search for the Chiral Magnetic Effect with charge-dependent azimuthal correlations in Xe–Xe collisions at √sNN = 5.44 TeV

作     者：Acharya, S. Adamová, D. Adler, A. Rinella, G. Aglieri Agnello, M. Agrawal, N. Ahammed, Z. Ahmad, S. Ahn, S.U. Ahuja, I. Akindinov, A. Al-Turany, M. Aleksandrov, D. Alessandro, B. Alfanda, H.M. Molina, R. Alfaro Ali, B. Alici, A. Alizadehvandchali, N. Alkin, A. Alme, J. Alocco, G. Alt, T. Altsybeev, I. Alvarado, J.R. Anaam, M.N. Andrei, C. Andronic, A. Anguelov, V. Antinori, F. Antonioli, P. Apadula, N. Aphecetche, L. Appelshäuser, H. Arata, C. Arcelli, S. Aresti, M. Arnaldi, R. Arsene, I.C. Arslandok, M. Augustinus, A. Averbeck, R. Azmi, M.D. Badalà, A. Bae, J. Baek, Y.W. Bai, X. Bailhache, R. Bailung, Y. Balbino, A. Baldisseri, A. Balis, B. Banerjee, D. Banoo, Z. Barbera, R. Barile, F. Barioglio, L. Barlou, M. Barnaföldi, G.G. Barnby, L.S. Barret, V. Barreto, L. Bartels, C. Barth, K. Bartsch, E. Bastid, N. Basu, S. Batigne, G. Battistini, D. Batyunya, B. Bauri, D. Alba, J.L. Bazo Bearden, I.G. Beattie, C. Becht, P. Behera, D. Belikov, I. Hechavarria, A.D.C. Bell Bellini, F. Bellwied, R. Belokurova, S. Belyaev, V. Bencedi, G. Beole, S. Bercuci, A. Berdnikov, Y. Berdnikova, A. Bergmann, L. Besoiu, M.G. Betev, L. Bhaduri, P.P. Bhasin, A. Bhat, M.A. Bhattacharjee, B. Bianchi, L. Bianchi, N. Bielčík, J. Bielčíková, J. Biernat, J. Bigot, A.P. Bilandzic, A. Biro, G. Biswas, S. Bize, N. Blair, J.T. Blau, D. Blidaru, M.B. Bluhme, N. Blume, C. Boca, G. Bock, F. Bodova, T. Bogdanov, A. Boi, S. Bok, J. Boldizsár, L. Bolozdynya, A. Bombara, M. Bond, P.M. Bonomi, G. Borel, H. Borissov, A. Carcamo, A.G. Borquez Bossi, H. Botta, E. Bouziani, Y.E.M. Bratrud, L. Braun-Munzinger, P. Bregant, M. Broz, M. Bruno, G.E. Buckland, M.D. Budnikov, D. Buesching, H. Bufalino, S. Bugnon, O. Buhler, P. Buthelezi, Z. Bysiak, S.A. Cai, M. Caines, H. Caliva, A. Villar, E. Calvo Camacho, J.M.M. Camerini, P. Canedo, F.D.M. Cantway, S.L. Carabas, M. Carballo, A.A. Carnesecchi, F. Caron, R. Carvalho, L.A.D. Castellanos, J. Castillo 

作者机构：Max-Planck-Institut fur Physik Munich Germany  Bologna Italy Dipartimento DET del Politecnico di Torino Turin Italy Yildiz Technical University Istanbul Turkey Department of Applied Physics Aligarh Muslim University Aligarh India Institute of Theoretical Physics University of Wroclaw Poland An Institution Covered by a Cooperation agreement with CERN Switzerland Foundation Yerevan Armenia AGH University of Krakow Cracow Poland Bogolyubov Institute for Theoretical Physics National Academy of Sciences of Ukraine Kiev Ukraine  Kolkata India California Polytechnic State University San Luis ObispoCA United States Central China Normal University Wuhan China  Havana Cuba  Mérida Mexico City Mexico Chicago State University ChicagoIL United States China Institute of Atomic Energy Beijing China Chungbuk National University Cheongju Korea Republic of Comenius University Bratislava Faculty of Mathematics Physics and Informatics Bratislava Slovakia COMSATS University Islamabad Islamabad Pakistan Creighton University OmahaNE United States Department of Physics Aligarh Muslim University Aligarh India Department of Physics Pusan National University Pusan Korea Republic of Department of Physics Sejong University Seoul Korea Republic of Department of Physics University of California BerkeleyCA United States Department of Physics University of Oslo Oslo Norway Department of Physics and Technology University of Bergen Bergen Norway Dipartimento di Fisica Università di Pavia Pavia Italy Dipartimento di Fisica dell’Università and Sezione INFN Cagliari Italy Dipartimento di Fisica dell’Università and Sezione INFN Trieste Italy Dipartimento di Fisica dell’Università and Sezione INFN Turin Italy Dipartimento di Fisica e Astronomia dell’Università and Sezione INFN Bologna Italy Dipartimento di Fisica e Astronomia dell’Università and Sezione INFN Catania Italy Dipartimento di Fisica e Astronomia dell’Università and Sezione INFN Padova Italy Dipartimento di Fisica E.R. Caianiello’ dell’Università Gruppo Collegato INFN Salerno Italy Dipartimento DISAT del Politecnico Sezione INFN Turin Italy Dipartimento di Scienze MIFT Università di Messina Messina Italy Dipartimento Interateneo di Fisica ‘M. Merlin’ and Sezione INFN Bari Italy  Geneva Switzerland Faculty of Electrical Engineering Mechanical Engineering and Naval Architecture University of Split Split Croatia Faculty of Engineering and Science Western Norway University of Applied Sciences Bergen Norway Faculty of Nuclear Sciences and Physical Engineering Czech Technical University in Prague Prague Czech Republic Faculty of Physics Sofia University Sofia Bulgaria Faculty of Science P.J. Šafárik University Košice Slovakia Frankfurt Institute for Advanced Studies Johann Wolfgang Goethe-Universität Frankfurt Frankfurt Germany Fudan University Shanghai China Gangneung-Wonju National University Gangneung Korea Republic of Gauhati University Department of Physics Guwahati India Helmholtz-Institut für Strahlen- und Kernphysik Rheinische Friedrich-Wilhelms-Universität Bonn Bonn Germany  Helsinki Finland High Energy Physics Group Universidad Autónoma de Puebla Puebla Mexico Horia Hulubei National Institute of Physics and Nuclear Engineering Bucharest Romania HUN-REN Wigner Research Centre for Physics Budapest Hungary  Mumbai India Indian Institute of Technology Indore Indore India INFN Laboratori Nazionali di Frascati Frascati Italy INFN Sezione di Bari Bari Italy INFN Sezione di Bologna Bologna Italy INFN Sezione di Cagliari Cagliari Italy INFN Sezione di Catania Catania Italy INFN Sezione di Padova Padova Italy INFN Sezione di Pavia Pavia Italy INFN Sezione di Torino Turin Italy INFN Sezione di Trieste Trieste Italy Inha University Incheon Korea Republic of  Utrecht University/Nikhef Utrecht Netherlands Institute of Experimental Physics Slovak Academy of Sciences Košice Slovakia Institute of Physics Homi Bhabha National Institute Bhubaneswar India Institute of Physics the Czech Academy of Sciences Prague Czech Republic  Bucharest Romania Institut für Kernphysik Johann Wolfgang Goethe-Universität Frankfurt Frankfurt Germany Instituto de Ciencias Nucleares Universidad Nacional Autónoma de México Mexico City Mexico  Porto Alegre Brazil Instituto de Física Universidad Nacional Autónoma de México Mexico City Mexico iThemba LABS National Research Foundation Somerset West South Africa Jeonbuk National University Jeonju Korea Republic of Johann-Wolfgang-Goethe Universität Frankfurt Institut für Informatik Fachbereich Informatik undMathematik Frankfurt Germany Korea Institute of Science and Technology Information Daejeon Korea Republic of KTO Karatay University Konya Turkey Laboratoire de Physique Subatomique et de Cosmologie Université Grenoble-Alpes CNRS-IN2P3 Grenoble France Lawrence Berkeley National Laboratory BerkeleyCA United States 

出 版 物：《arXiv》 (arXiv)

年 卷 期：2022年

核心收录：

主　　题：Viscous flow 

摘      要：Charge-dependent two- and three-particle correlations measured in Xe–Xe collisions at √sNN = 5.44 TeV are presented. Results are obtained for charged particles in the pseudorapidity range |η| T αβ ≡ 〈cos(φα +φβ −2Ψ2)〉, calculated for different combinations of charge sign α and β, is expected to be sensitive to the presence of the Chiral Magnetic Effect (CME). Its magnitude is similar to the one observed in Pb–Pb collisions in contrast to a smaller CME signal in Xe–Xe collisions than in Pb–Pb collisions predicted by Monte Carlo (MC) calculations including a magnetic field induced by the spectator protons. These observations point to a large non-CME contribution to the correlator. Furthermore, the charge dependence of γαβ can be described by a blast wave model calculation that incorporates background effects and by the Anomalous Viscous Fluid Dynamics model with values of the CME signal consistent with zero. The Xe–Xe and Pb–Pb results are combined with the expected CME signal dependence on the system size from the MC calculations including a magnetic field to obtain the fraction of CME contribution in γαβ, fCME. The CME fraction is compatible with zero for the 30% most central events in both systems and then becomes positive. This yields an upper limit of 2% (3%) and 25% (32%) at 95% (99.7%) confidence level for the CME signal contribution to γαβ in the 0–70% Xe–Xe and Pb–Pb collisions, respectively. © 2022, CC BY.