Abstract
We report measurements of the inclusive J/ψ yield and average transverse momentum as a function of charged-particle pseudorapidity density dNch/dη in p–Pb collisions at sNN=5.02TeV with ALICE at the LHC. The observables are normalised to their corresponding averages in non-single diffractive events. An increase of the normalised J/ψ yield with normalised dNch/dη, measured at mid-rapidity, is observed at mid-rapidity and backward rapidity. At forward rapidity, a saturation of the relative yield is observed for high charged-particle multiplicities. The normalised average transverse momentum at forward and backward rapidities increases with multiplicity at low multiplicities and saturates beyond moderate multiplicities. In addition, the forward-to-backward nuclear modification factor ratio is also reported, showing an increasing suppression of J/ψ production at forward rapidity with respect to backward rapidity for increasing charged-particle multiplicity.
| Original language | English |
|---|---|
| Pages (from-to) | 91-104 |
| Number of pages | 14 |
| Journal | Physics Letters B |
| Volume | 776 |
| DOIs | |
| State | Published - Jan 10 2018 |
Funding
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 and Österreichische 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), Universidade Federal do Rio Grande do Sul (UFRGS), Financiadora de Estudos e Projetos (Finep) and Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP), Brazil; Ministry of Science & Technology of China (MSTC), National Natural Science Foundation of China (NSFC) and Ministry of Education of China (MOEC), China; Ministry of Science, Education and Sport and Croatian Science Foundation, Croatia; Ministry of Education, Youth and Sports of the Czech Republic, Czech Republic; The Danish Council for Independent Research — Natural Sciences, the Carlsberg Foundation 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, Wissenschaft, Forschung und Technologie (BMBF) and GSI Helmholtzzentrum für Schwerionenforschung GmbH, Germany; Ministry of Education, Research and Religious Affairs, Greece; National Research, Development and Innovation Office, Hungary; Department of Atomic Energy, Government of India (DAE) and Council of Scientific and Industrial Research (CSIR), New Delhi, 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), Japan Society for the Promotion of Science (JSPS) KAKENHI and Japanese Ministry of Education, Culture, Sports, Science and Technology (MEXT), 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 and National Science Centre, 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 Romanian National Agency for Science, Technology and Innovation, Romania; Joint Institute for Nuclear Research (JINR), Ministry of Education and Science of the Russian Federation and National Research Centre Kurchatov Institute, Russia; Ministry of Education, Science, Research and Sport of the Slovak Republic, Slovakia; National Research Foundation of South Africa, South Africa; Centro de Aplicaciones Tecnológicas y Desarrollo Nuclear (CEADEN), Cubaenergía, Cuba, Ministerio de Ciencia e Innovacion and Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Spain; Swedish Research Council (VR) and Knut & Alice Wallenberg Foundation (KAW), Sweden; European Organization for Nuclear Research, Switzerland; National Science and Technology Development Agency (NSDTA), Suranaree University of Technology (SUT) 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 U.S. Department of Energy, Office of Nuclear Physics (DOE NP), United States of America. 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 and Österreichische 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 ), Universidade Federal do Rio Grande do Sul (UFRGS), Financiadora de Estudos e Projetos (Finep) and Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP), Brazil; Ministry of Science & Technology of China (MSTC), National Natural Science Foundation of China (NSFC) and Ministry of Education of China (MOEC), China; Ministry of Science, Education and Sport and Croatian Science Foundation , Croatia; Ministry of Education, Youth and Sports of the Czech Republic, Czech Republic; The Danish Council for Independent Research — Natural Sciences, the Carlsberg Foundation 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, Wissenschaft, Forschung und Technologie ( BMBF ) and GSI Helmholtzzentrum für Schwerionenforschung GmbH , Germany; Ministry of Education, Research and Religious Affairs , Greece; National Research, Development and Innovation Office , Hungary; Department of Atomic Energy, Government of India (DAE) and Council of Scientific and Industrial Research (CSIR), New Delhi, 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), Japan Society for the Promotion of Science (JSPS) KAKENHI and Japanese Ministry of Education, Culture, Sports, Science and Technology (MEXT), 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 and National Science Centre, 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 Romanian National Agency for Science, Technology and Innovation , Romania; Joint Institute for Nuclear Research (JINR), Ministry of Education and Science of the Russian Federation and National Research Centre Kurchatov Institute , Russia; Ministry of Education, Science, Research and Sport of the Slovak Republic , Slovakia; National Research Foundation of South Africa, South Africa; Centro de Aplicaciones Tecnológicas y Desarrollo Nuclear (CEADEN), Cubaenergía, Cuba , Ministerio de Ciencia e Innovacion and Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Spain; Swedish Research Council (VR) and Knut & Alice Wallenberg Foundation (KAW), Sweden; European Organization for Nuclear Research , Switzerland; National Science and Technology Development Agency (NSDTA), Suranaree University of Technology (SUT) 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 U.S. Department of Energy , Office of Nuclear Physics (DOE NP), United States of America.
| Funders | Funder number |
|---|---|
| Not added | ST/P004598/1, ST/P005438/1, 1657698 |
| Austrian Academy of Sciences and Österreichische Nationalstiftung für Forschung, Technologie und Entwicklung | |
| Centro Fermi – Museo Storico della Fisica e Centro Studi e Ricerche Enrico Fermi and Istituto Nazionale di Fisica Nucleare | |
| Helsinki Institute of Physics | |
| Indonesian Institute of Science , Indonesia | |
| Institute of Atomic Physics and Romanian National Agency for Science, Technology and Innovation , Romania | |
| Ministry of Communications and High Technologies | |
| Ministry of Education, Science, Research and Sport | |
| Ministry of Education, Youth and Sports of the Czech Republic, Czech Republic | |
| Ministry of Science, Education and Sport and Croatian Science Foundation | |
| NRU | |
| National Nuclear Research Center | |
| State Committee of Science and World Federation | |
| Turkish Atomic Energy Agency | |
| Yerevan Physics Institute | |
| National Science Foundation | 1719759 |
| U.S. Department of Energy | |
| Nuclear Physics | |
| California Earthquake Authority | |
| Österreichische Nationalstiftung für Forschung, Technologie und Entwicklung | |
| Türkiye Atom Enerjisi Kurumu | |
| Ministry of Higher Education and Scientific Research | |
| CERN | |
| Office of the Higher Education Commission | |
| Institute for Innovative Science and Technology, Nagasaki Institute of Applied Science | |
| Science and Technology Facilities Council | 2014 STFC Nuclear Physics CG, ST/M001601/1, 2017 STFC Nuclear Physics CG, GRIDPP, ST/J000108/1, ST/L005670/1, ST/M001598/1 |
| National Research Foundation | |
| Council of Scientific and Industrial Research, India | |
| Department of Atomic Energy, Government of India | |
| Japan Society for the Promotion of Science | 15H03664, 17H01122, 17H02876 |
| Ministry of Education, Culture, Sports, Science and Technology | |
| Danmarks Grundforskningsfond | |
| Fundação de Amparo à Pesquisa do Estado de São Paulo | |
| National Natural Science Foundation of China | |
| Austrian Academy of Sciences | |
| Ministerstvo Školství, Mládeže a Tělovýchovy | |
| Ministry of Education of the People's Republic of China | |
| Bundesministerium für Bildung und Forschung | |
| Carlsbergfondet | |
| Ministry of Science and Technology of the People's Republic of China | |
| Consejo Nacional de Ciencia y Tecnología | |
| Ministerstvo školstva, vedy, výskumu a športu Slovenskej republiky | |
| Nederlandse Organisatie voor Wetenschappelijk Onderzoek | |
| Ministry of Education and Science of the Russian Federation | |
| Conselho Nacional de Desenvolvimento Científico e Tecnológico | |
| Korea Institute of Science and Technology Information | |
| National Research Foundation of Korea | |
| Joint Institute for Nuclear Research | |
| Instituto Nazionale di Fisica Nucleare | |
| Knut och Alice Wallenbergs Stiftelse | |
| National Science and Technology Development Agency | |
| Narodowe Centrum Nauki | |
| Suranaree University of Technology | |
| Vetenskapsrådet | |
| Narodowym Centrum Nauki | |
| Hrvatska Zaklada za Znanost | |
| Ministerstwo Edukacji i Nauki | |
| National Academy of Sciences of Ukraine | |
| Centre National de la Recherche Scientifique | |
| Financiadora de Estudos e Projetos | |
| Danmarks Frie Forskningsfond | |
| Ministerio de Ciencia e Innovación | |
| Universidade Federal do Rio Grande do Sul | |
| Norges Forskningsråd | |
| Dirección General de Asuntos del Personal Académico, Universidad Nacional Autónoma de México | |
| Ministry of National Education and Religious Affairs | |
| Commissariat à l'Énergie Atomique et aux Énergies Alternatives | |
| Ministarstvo Znanosti, Obrazovanja i Sporta | |
| Bundesministerium für Bildung und Frauen | |
| State Committee of Science | |
| Fondo de Cooperación Internacional en Ciencia y Tecnología | |
| Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas | |
| GSI Helmholtzzentrum für Schwerionenforschung | |
| Nemzeti Kutatási Fejlesztési és Innovációs Hivatal | |
| Institut National de Physique Nucléaire et de Physique des Particules | |
| National Research Center "Kurchatov Institute" | |
| Centro de Aplicaciones Tecnológicas y Desarrollo Nuclear | |
| Indian Institute of Space Science and Technology |