Relative Modification of Prompt ψ(2S) and J/ψ Yields from pp to PbPb Collisions at [square root]sNN =5.02 TeV

A. M. Sirunyan; Hugues Brun; Barbara Clerbaux; Gilles Lentdecker; Hugo Delannoy; Giuseppe Fasanella; Laurent Favart; Reza Goldouzian; Anastasia Grebenyuk; Georgia Karapostoli; Thomas Lenzi; Alexandre Leonard; Jelena Luetic; Thierry Maerschalk; Audrey Marinov; Aidan Sean Randle-Conde; Tomislav Seva; Catherine Vander Velde; Pascal Vanlaer; David Vannerom; Ryo Yonamine; Florian Zenoni; Fengwangdong Zhang; Wenxing Fang; Brian Dorney; Qun Wang; Michael Y. Wang

doi:10.1103/PHYSREVLETT.118.162301

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No. of bitstreams: 0 Previous issue date: 2017-04-20 Bundesministerium fur Wissenschaft, Forschung und Wirtschaft (BMWFW) (Austria) Austrian Science Fund (FWF) (Austria) Belgian Fonds de la Recherche Scientifique (FNRS) (Belgium) Belgian Fonds voor Wetenschappelijk Onderzoek (FWO) (Belgium) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Fundação de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Bulgarian Ministry of Education and Science (MES) (Bulgaria) CERN Chinese Academy of Sciences (CAS) (China) Ministry of Science and Technology (MoST) (China) Chinese National Natural Science Foundation of China (NSFC) (China) Colombian Funding Agency (COLCIENCIAS) (Colombia) Croatian Ministry of Science, Education and Sport (MSES) (Croatia) Croatian Science Foundation (CSF) (Croatia) Research Promotion Foundation (RPF) (Cyprus) Secretaria de Educacion Superior, Ciencia, Tecnologia e Innovacion (SENESCYT) (Ecuador) Ministry of Education and Research (MoER) (Estonia) Estonian Research Council (ERC IUT) (Estonia) European Regional Development Fund (ERDF) (Estonia) Academy of Finland (Finland) Finnish Ministry of Education and Culture (MEC) (Finland) Helsinki Institute of Physics (HIP) (Finland) Commissariat a l'Energie Atomique et aux energies Alternatives (CEA) (France) Centre National de la Recherche Scientifique (CNRS)/Institut National de Physique Nucleaire et de Physique des Particules (IN2P3) (France) Bundesministerium fur Bildung und Forschung (BMBF) (Germany) Deutsche Forschungsgemeinschaft (DFG) (Germany) Helmholtz-Gemeinschaft Deutscher Forschungszentren (HGF) (Germany) General Secretariat for Research and Technology (GSRT) (Greece) Orszagos Tudomanyos Kutatasi Alapprogramok (OTKA) (Hungary) National Innovation Office (NIH) (Hungary) Department of Atomic Energy (DAE) (India) Department of Science and Technology (DST) (India) Institute for Research in Fundamental Studies (IPM) (Iran) Science Foundation (SFI) (Ireland) Istituto Nazionale di Fisica Nucleare (INFN) (Italy) Korean Ministry of Education, Science and Technology (MSIP) (Republic of Korea) National Research Foundation of Korea (NRF) (Republic of Korea) Lithuanian Academy of Sciences (LAS) (Lithuania) Ministry of Education (MOE) (Malaysia) University of Malaya (UM) (Malaysia) Benemerita Universidad Autonoma de Puebla (BUAP) (Mexico) Centro de Investigacion y de Estudios Avanzados del Instituto Politecnico Nacional (CINVESTAV) (Mexico) Consejo Nacional de Ciencia y Tecnologia (CONACYT) (Mexico) Laboratorio Nacional de Supercomputo del Sureste (LNS) (Mexico) Secretaria de Educacion Publica (SEP) (Mexico) Universidad Autonoma de San Luis Potosi (UASLP-FAI) (Mexico) Ministry of Business, Innovation and Employment (MBIE) (New Zealand) Pakistan Atomic Energy Commission (PAEC) (Pakistan) Ministry of Science and Higher Education (MSHE) (Poland) National Science Centre (NSC) (Poland) Fundacao para a Ciencia e a Tecnologia (FCT) (Portugal) Joint Institute for Nuclear Research (JINR) (Dubna) Ministry of Education and Science of the Russian Federation (MON) (Russia) Federal Agency of Atomic Energy of the Russian Federation (RosAtom) (Russia) Russian Academy of Sciences (RAS) (Russia) Russian Foundation for Basic Research (RFBR) (Russia) Ministry of Education, Science and Technological Development of Serbia (MESTD) (Serbia) Secretaria de Estado de Investigacion, Desarrollo e Innovacion (SEIDI) (Spain) Programa ConsoliderIngenio (CPAN) (Spain) Swiss Funding Agencies (Switzerland) Ministry of Science and Technology (MST) (Taipei) Thailand Center of Excellence in Physics (ThEPCenter) (Thailand) Institute for the Promotion of Teaching Science and Technology of Thailand (IPST) (Thailand) Special Task Force for Activating Research (STAR) (Thailand) National Science and Technology Development Agency of Thailand (NSTDA) (Thailand) Scientific and Technical Research Council of Turkey (TUBITAK) (Turkey) Turkish Atomic Energy Authority (TAEK) (Turkey) National Academy of Sciences of Ukraine (NASU) (Ukraine) State Fund for Fundamental Researches (SFFR) (Ukraine) Science and Technology Facilities Council (STFC) (United Kingdom) US Department of Energy (DOE) (USA) US National Science Foundation (NSF) (USA) The relative modification of the prompt psi(2S) and J/psi yields from pp to PbPb collisions, at the center-of- mass energy of 5.02 TeV per nucleon pair, is presented. The analysis is based on pp and PbPb data samples collected by the CMS experiment at the LHC in 2015, corresponding to integrated luminosities of 28.0 pb(-1) and 464 mu b(-1), respectively. The double ratio of measured yields of prompt charmonia reconstructed through their decays into muon pairs,(N-psi(2S)/N J/psi )(PbPb)/(N-psi((2S))/N (J/psi) )(pp),is determined as a function of PbPb collision centrality and charmonium transverse momentum p(T), in two kinematic intervals: broken vertical bar y vertical bar < 1.6 covering 6.5 < pT < 30 GeV/c and 1.6 < broken vertical bar y vertical bar < 2.4 covering 3 < pT < 30 GeV/c. The centrality-integrated double ratios are 0.36 +/- 0.08(stat) +/- 0.05(syst) in the first interval and 0.24 +/- 0.22(stat) +/- 0.09(syst) in the second. The double ratio is lower than unity in all the measured bins, suggesting that the psi(2S) yield is more suppressed than the J/psi yield in the explored phase space. 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Relative Modification of Prompt ψ(2S) and J/ψ Yields from pp to PbPb Collisions at [square root]sNN =5.02 TeV

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