Centrality dependence of J/psi and psi(2S) production and nuclear modification in p-Pb collisions at sNN=8.16 TeV

Autor: Albuquerque, Danilo Silva de, 1992, Chinellato, David Dobrigkeit, 1983, Souza, Rafael Derradi de, 1982, Takahashi, Jun, 1971
Přispěvatelé: UNIVERSIDADE ESTADUAL DE CAMPINAS
Rok vydání: 2021
Předmět:
Zdroj: Repositório Institucional da Unicamp
Universidade Estadual de Campinas (UNICAMP)
instacron:UNICAMP
Repositório da Produção Científica e Intelectual da Unicamp
Popis: Agradecimentos: The ALICE collaboration would like to thank all its engineers and technicians for their invaluable contributions to the construction of the experiment and the CERN accelerator teams for the outstanding performance of the LHC complex. The ALICE collaboration gratefully acknowledges the resources and support provided by all Grid centres and the Worldwide LHC Computing Grid (WLCG) collaboration. The ALICE collaboration acknowledges the following funding agencies for their support in building and running the ALICE detector: A.I. Alikhanyan National Science Laboratory (Yerevan Physics Institute) Foundation (ANSL), State Committee of Science and World Federation of Scientists (WFS), Armenia||Austrian Academy of Sciences, Austrian Science Fund (FWF): [M 2467-N36] and Nationalstiftung für Forschung, Technologie und Entwicklung, Austria||Ministry of Communications and High Technologies, National Nuclear Research Center, Azerbaijan||Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq), Financiadora de Estudos e Projetos (Finep), Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) and Universidade Federal do Rio Grande do Sul (UFRGS), Brazil||Ministry of Education of China (MOEC), Ministry of Science & Technology of China (MSTC) and National Natural Science Foundation of China (NSFC), China||Ministry of Science and Education and Croatian Science Foundation, Croatia||Centro de Aplicaciones Tecnológicas y Desarrollo Nuclear (CEADEN), Cubaenergía, Cuba||Ministry of Education, Youth and Sports of the Czech Republic, Czech Republic||The Danish Council for Independent Research | Natural Sciences, the VILLUM FONDEN and Danish National Research Foundation (DNRF), Denmark||Helsinki Institute of Physics (HIP), Finland||Commissariat à l’Energie Atomique (CEA) and Institut National de Physique Nucléaire et de Physique des Particules (IN2P3) and Centre National de la Recherche Scientifique (CNRS), France||Bundesministerium für Bildung und Forschung (BMBF) and GSI Helmholtzzentrum für Schwerionenforschung GmbH, Germany||General Secretariat for Research and Technology, Ministry of Education, Research and Religions, Greece||National Research, Development and Innovation Office, Hungary||Department of Atomic Energy Government of India (DAE), Department of Science and Technology, Government of India (DST), University Grants Commission, Government of India (UGC) and Council of Scientific and Industrial Research (CSIR), India||Indonesian Institute of Science, Indonesia||Centro Fermi - Museo Storico della Fisica e Centro Studi e Ricerche Enrico Fermi and Istituto Nazionale di Fisica Nucleare (INFN), Italy||Institute for Innovative Science and Technology, Nagasaki Institute of Applied Science (IIST), Japanese Ministry of Education, Culture, Sports, Science and Technology (MEXT) and Japan Society for the Promotion of Science (JSPS) KAK-ENHI, Japan||Consejo Nacional de Ciencia (CONACYT) y Tecnología, through Fondo de Cooperación Internacional en Ciencia y Tecnología (FONCICYT) and Dirección General de Asuntos del Personal Academico (DGAPA), Mexico||Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO), Netherlands||The Research Council of Norway, Norway||Commission on Science and Technology for Sustainable Development in the South (COMSATS), Pakistan||Pontificia Universidad Católica del Perú, Peru||Ministry of Science and Higher Education, National Science Centre and WUT ID-UB, Poland||Korea Institute of Science and Technology Information and National Research Foundation of Korea (NRF), Republic of Korea||Ministry of Education and Scientific Research, Institute of Atomic Physics and Ministry of Research and Innovation and Institute of Atomic Physics, Romania||Joint Institute for Nuclear Research (JINR), Ministry of Education and Science of the Russian Federation, National Research Centre Kurchatov Institute, Russian Science Foundation and Russian Foundation for Basic Research, Russia||Ministry of Education, Science, Research and Sport of the Slovak Republic, Slovakia||National Research Foundation of South Africa, South Africa||Swedish Research Council (VR) and Knut & Alice Wallenberg Foundation (KAW), Sweden||European Organization for Nuclear Research, Switzerland||Suranaree University of Technology (SUT), National Science and Technology Development Agency (NSDTA) and Office of the Higher Education Commission under NRU project of Thailand, Thailand||Turkish Atomic Energy Agency (TAEK), Turkey||National Academy of Sciences of Ukraine, Ukraine||Science and Technology Facilities Council (STFC), United Kingdom||National Science Foundation of the United States of America (NSF) and United States Department of Energy, Office of Nuclear Physics (DOE NP), United States of America Abstract: The inclusive production of the J/? and ?(2S) charmonium states is studied as a function of centrality in p-Pb collisions at a centre-of-mass energy per nucleon pair sNN---v = 8.16 TeV at the LHC. The measurement is performed in the dimuon decay channel with the ALICE apparatus in the centre-of-mass rapidity intervals -4.46 < ycms < -2.96 (Pb-going direction) and 2.03 < ycms < 3.53 (p-going direction), down to zero transverse momentum (pT). The J/? and ?(2S) production cross sections are evaluated as a function of the collision centrality, estimated through the energy deposited in the zero degree calorimeter located in the Pb-going direction. The pT-differential J/? production cross section is measured at backward and forward rapidity for several centrality classes, together with the corresponding average and ?p2T? values. The nuclear effects affecting the production of both charmonium states are studied using the nuclear modification factor. In the p-going direction, a suppression of the production of both charmonium states is observed, which seems to increase from peripheral to central collisions. In the Pb-going direction, however, the centrality dependence is different for the two states: the nuclear modification factor of the J/? increases from below unity in peripheral collisions to above unity in central collisions, while for the ?(2S) it stays below or consistent with unity for all centralities with no significant centrality dependence. The results are compared with measurements in p-Pb collisions at sNN---v = 5.02 TeV and no significant dependence on the energy of the collision is observed. Finally, the results are compared with theoretical models implementing various nuclear matter effects CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO - CNPQ FINANCIADORA DE ESTUDOS E PROJETOS - FINEP FUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULO - FAPESP Aberto
Databáze: OpenAIRE
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