Energy dependence of exclusive J/ψ photoproduction off protons in ultra-peripheral p–Pb collisions at √sNN = 5.02 TeV

ALICE Collaboration

doi:10.1140/epjc/s10052-019-6816-2

Energy dependence of exclusive J/ψ photoproduction off protons in ultra-peripheral p–Pb collisions at √s_NN = 5.02 TeV

ALICE Collaboration

Subatomic Physics

Research output: Contribution to journal › Article › Academic › peer-review

Abstract

The ALICE Collaboration has measured the energy dependence of exclusive photoproduction of J/ψ vector mesons off proton targets in ultra–peripheral p–Pb collisions at a centre-of-mass energy per nucleon pair √s_NN= 5.02 TeV. The e⁺e^- and μ⁺μ^- decay channels are used to measure the cross section as a function of the rapidity of the J/ψ in the range - 2.5 < y < 2.7, corresponding to an energy in the γp centre-of-mass in the interval 40 < W _γ_p < 550 GeV. The measurements, which are consistent with a power law dependence of the exclusive J/ψ photoproduction cross section, are compared to previous results from HERA and the LHC and to several theoretical models. They are found to be compatible with previous measurements.

Original language	English
Article number	402
Number of pages	18
Journal	European Physical Journal C
Volume	79
Issue number	5
DOIs	https://doi.org/10.1140/epjc/s10052-019-6816-2
Publication status	Published - 1 May 2019

Funding

Acknowledgements 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 Nationalstiftung für Forschung, Technolo-gie und Entwicklung, Austria; Ministry of Communications and High Technologies, National Nuclear Research Center, Azerbaijan; Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq), Uni-versidade 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 and Education, Croatia; Centro de Aplicaciones Tecnológ-icas 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 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; 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 Isti-tuto 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 Tec-nología, through Fondo de Cooperación Internacional en Ciencia y Tec-nología (FONCICYT) and Dirección General de Asuntos del Personal Academico (DGAPA), Mexico; Nederlandse Organisatie voor Weten-schappelijk 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; 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 United States Department of Energy, Office of Nuclear Physics (DOE NP), United States of America. 1 A.I. Alikhanyan National Science Laboratory (Yerevan Physics Institute) Foundation, Yerevan, Armenia 2 Bogolyubov Institute for Theoretical Physics, National Academy of Sciences of Ukraine, Kiev, Ukraine 3 Bose Institute, Department of Physics and Centre for Astroparticle Physics and Space Science (CAPSS), Kolkata, India 4 Budker Institute for Nuclear Physics, Novosibirsk, Russia 5 California Polytechnic State University, San Luis Obispo, CA, USA 6 Central China Normal University, Wuhan, China 7 Centre de Calcul de l’IN2P3, Villeurbanne, Lyon, France 8 Centro de Aplicaciones Tecnológicas y Desarrollo Nuclear (CEADEN), Havana, Cuba 9 Centro de Investigación y de Estudios Avanzados (CINVESTAV), Mexico City and Mérida, Mexico 10 Centro Fermi-Museo Storico della Fisica e Centro Studi e Ricerche “Enrico Fermi’, Rome, Italy 11 Chicago State University, Chicago, IL, USA 12 China Institute of Atomic Energy, Beijing, China 13 Chonbuk National University, Jeonju, Republic of Korea 14 Comenius University Bratislava, Faculty of Mathematics, Physics and Informatics, Bratislava, Slovakia 15 COMSATS Institute of Information Technology (CIIT), Islamabad, Pakistan 16 Creighton University, Omaha, NE, USA 17 Department of Physics, Aligarh Muslim University, Aligarh, India 18 Department of Physics, Pusan National University, Pusan, Republic of Korea 19 Department of Physics, Sejong University, Seoul, Republic of Korea 20 Department of Physics, University of California, Berkeley, CA, USA 21 Department of Physics, University of Oslo, Oslo, Norway

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10.1140/epjc/s10052-019-6816-2

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@article{8cd0152d88b745df9580b0ed9b6d4b0c,

title = "Energy dependence of exclusive J/ψ photoproduction off protons in ultra-peripheral p–Pb collisions at √sNN = 5.02 TeV",

abstract = " The ALICE Collaboration has measured the energy dependence of exclusive photoproduction of J/ψ vector mesons off proton targets in ultra–peripheral p–Pb collisions at a centre-of-mass energy per nucleon pair √sNN = 5.02 TeV. The e+e- and μ+μ- decay channels are used to measure the cross section as a function of the rapidity of the J/ψ in the range - 2.5 < y < 2.7, corresponding to an energy in the γp centre-of-mass in the interval 40 < W γp < 550 GeV. The measurements, which are consistent with a power law dependence of the exclusive J/ψ photoproduction cross section, are compared to previous results from HERA and the LHC and to several theoretical models. They are found to be compatible with previous measurements. ",

author = "{ALICE Collaboration} and S. Acharya and Acosta, {F. T.} and J. Adam and D. Adamov{\'a} and A. Adler and J. Adolfsson and Aggarwal, {M. M.} and Rinella, {G. Aglieri} and M. Agnello and N. Agrawal and Z. Ahammed and Ahn, {S. U.} and S. Aiola and A. Akindinov and M. Al-Turany and Alam, {S. N.} and Albuquerque, {D. S.D.} and D. Aleksandrov and B. Alessandro and Alfanda, {H. M.} and Molina, {R. Alfaro} and Y. Ali and A. Alici and A. Alkin and J. Alme and C. Bedda and D. Caffarri and P. Christakoglou and A. Grelli and S. Jaelani and Keijdener, {D. L.D.} and Z. Khabanova and Kuijer, {P. G.} and Lodato, {D. F.} and J. Margutti and A. Mischke and Mohanty, {A. P.} and G. Nooren and T. Peitzmann and T. Richert and Sas, {M. H.P.} and G. Simatovic and Snellings, {R. J.M.} and Trzeciak, {B. A.} and {der Kolk}, {N. van} and {van Doremalen}, {L. V.R.} and {van Leeuwen}, M. and Veen, {A. M.} and L. Vermunt and H. Yokoyama",

year = "2019",

month = may,

day = "1",

doi = "10.1140/epjc/s10052-019-6816-2",

language = "English",

volume = "79",

journal = "European Physical Journal C",

issn = "1434-6044",

publisher = "Springer Nature",

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TY - JOUR

T1 - Energy dependence of exclusive J/ψ photoproduction off protons in ultra-peripheral p–Pb collisions at √sNN = 5.02 TeV

AU - ALICE Collaboration

AU - Acharya, S.

AU - Acosta, F. T.

AU - Adam, J.

AU - Adamová, D.

AU - Adler, A.

AU - Adolfsson, J.

AU - Aggarwal, M. M.

AU - Rinella, G. Aglieri

AU - Agnello, M.

AU - Agrawal, N.

AU - Ahammed, Z.

AU - Ahn, S. U.

AU - Aiola, S.

AU - Akindinov, A.

AU - Al-Turany, M.

AU - Alam, S. N.

AU - Albuquerque, D. S.D.

AU - Aleksandrov, D.

AU - Alessandro, B.

AU - Alfanda, H. M.

AU - Molina, R. Alfaro

AU - Ali, Y.

AU - Alici, A.

AU - Alkin, A.

AU - Alme, J.

AU - Bedda, C.

AU - Caffarri, D.

AU - Christakoglou, P.

AU - Grelli, A.

AU - Jaelani, S.

AU - Keijdener, D. L.D.

AU - Khabanova, Z.

AU - Kuijer, P. G.

AU - Lodato, D. F.

AU - Margutti, J.

AU - Mischke, A.

AU - Mohanty, A. P.

AU - Nooren, G.

AU - Peitzmann, T.

AU - Richert, T.

AU - Sas, M. H.P.

AU - Simatovic, G.

AU - Snellings, R. J.M.

AU - Trzeciak, B. A.

AU - der Kolk, N. van

AU - van Doremalen, L. V.R.

AU - van Leeuwen, M.

AU - Veen, A. M.

AU - Vermunt, L.

AU - Yokoyama, H.

PY - 2019/5/1

Y1 - 2019/5/1

N2 - The ALICE Collaboration has measured the energy dependence of exclusive photoproduction of J/ψ vector mesons off proton targets in ultra–peripheral p–Pb collisions at a centre-of-mass energy per nucleon pair √sNN = 5.02 TeV. The e+e- and μ+μ- decay channels are used to measure the cross section as a function of the rapidity of the J/ψ in the range - 2.5 < y < 2.7, corresponding to an energy in the γp centre-of-mass in the interval 40 < W γp < 550 GeV. The measurements, which are consistent with a power law dependence of the exclusive J/ψ photoproduction cross section, are compared to previous results from HERA and the LHC and to several theoretical models. They are found to be compatible with previous measurements.

AB - The ALICE Collaboration has measured the energy dependence of exclusive photoproduction of J/ψ vector mesons off proton targets in ultra–peripheral p–Pb collisions at a centre-of-mass energy per nucleon pair √sNN = 5.02 TeV. The e+e- and μ+μ- decay channels are used to measure the cross section as a function of the rapidity of the J/ψ in the range - 2.5 < y < 2.7, corresponding to an energy in the γp centre-of-mass in the interval 40 < W γp < 550 GeV. The measurements, which are consistent with a power law dependence of the exclusive J/ψ photoproduction cross section, are compared to previous results from HERA and the LHC and to several theoretical models. They are found to be compatible with previous measurements.

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DO - 10.1140/epjc/s10052-019-6816-2

M3 - Article

AN - SCOPUS:85065713622

SN - 1434-6044

VL - 79

JO - European Physical Journal C

JF - European Physical Journal C

IS - 5

M1 - 402

ER -

Energy dependence of exclusive J/ψ photoproduction off protons in ultra-peripheral p–Pb collisions at √s_NN = 5.02 TeV

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