Published May 2015
| Version Published + Submitted
Journal Article
Open
Nuclear effects on the transverse momentum spectra of charged particles in pPb collisions at √sNN = 5.02 TeV
Abstract
Transverse momentum spectra of charged particles are measured by the CMS experiment at the CERN LHC in pPb collisions at √sNN = 5.02 TeV, in the range 0.4 < p_T < 120 GeV/c and pseudorapidity │η_(CM)│ < 1.8 in the proton-nucleon center-of-mass frame. For p_T < 10 GeV/c, the charged-particle production is asymmetric about η_(CM) = 0, with smaller yield observed in the direction of the proton beam, qualitatively consistent with expectations from shadowing in nuclear parton distribution functions (nPDF). A pp reference spectrum at √s = 5.02 TeV is obtained by interpolation from previous measurements at higher and lower center-of-mass energies. The p_T distribution measured in pPb collisions shows an enhancement of charged particles with p_T > 20 GeV/c compared to expectations from the pp reference. The enhancement is larger than predicted by perturbative quantum chromodynamic calculations that include antishadowing modifications of nPDFs.
Additional Information
© 2015 CERN for the benefit of the CMS Collaboration. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. Funded by SCOAP3. Received: 18 February 2015; Accepted: 1 May 2015; Published online: 29 May 2015. We congratulate our colleagues in the CERN accelerator departments for the excellent performance of the LHC and thank the technical and administrative staffs at CERN and at other CMS institutes for their contributions to the success of the CMS effort. In addition, we gratefully acknowledge the computing centres and personnel of the Worldwide LHC Computing Grid for delivering so effectively the computing infrastructure essential to our analyses. Finally, we acknowledge the enduring support for the construction and operation of the LHC and the CMS detector provided by the following funding agencies: the Austrian Federal Ministry of Science, Research and Economy and the Austrian Science Fund; the Belgian Fonds de la Recherche Scientifique, and Fonds voor Wetenschappelijk Onderzoek; the Brazilian Funding Agencies (CNPq, CAPES, FAPERJ, and FAPESP); the Bulgarian Ministry of Education and Science; CERN; the Chinese Academy of Sciences, Ministry of Science and Technology, and National Natural Science Foundation of China; the Colombian Funding Agency (COLCIENCIAS); the Croatian Ministry of Science, Education and Sport, and the Croatian Science Foundation; the Research Promotion Foundation, Cyprus; the Ministry of Education and Research, Estonian Research Council via IUT23-4 and IUT23-6 and European Regional Development Fund, Estonia; the Academy of Finland, Finnish Ministry of Education and Culture, and Helsinki Institute of Physics; the Institut National de Physique Nucléaire et de Physique des Particules / CNRS, and Commissariat à l' Énergie Atomique et aux Énergies Alternatives / CEA, France; the Bundesministerium für Bildung und Forschung, Deutsche Forschungsgemeinschaft, and Helmholtz-Gemeinschaft Deutscher Forschungszentren, Germany; the General Secretariat for Research and Technology, Greece; the National Scientific Research Foundation, and National Innovation Office, Hungary; the Department of Atomic Energy and the Department of Science and Technology, India; the Institute for Studies in theoretical Physics and Mathematics, Iran; the Science Foundation, Ireland; the Istituto Nazionale di Fisica Nucleare, Italy; the Ministry of Science, ICT and Future Planning, and National Research Foundation (NRF), Republic of Korea; the Lithuanian Academy of Sciences; the Ministry of Education, and University of Malaya (Malaysia); Mexican Funding Agencies (CINVESTAV, CONACYT, SEP, and UASLP-FAI); the Ministry of Business, Innovation and Employment, New Zealand; the Pakistan Atomic Energy Commission; the Ministry of Science and Higher Education and the National Science Centre, Poland; the Fundação para a Ciencia e a Tecnologia, Portugal; JINR, Dubna; the Ministry of Education and Science of the Russian Federation, the Federal Agency of Atomic Energy of the Russian Federation, Russian Academy of Sciences, and the Russian Foundation for Basic Research; the Ministry of Education, Science and Technological Development of Serbia; the Secretaría de Estado de Investigaciόn, Desarrollo e Innovaciόn and Programa Consolider-Ingenio 2010, Spain; the Swiss Funding Agencies (ETH Board, ETH Zurich, PSI, SNF, UniZH, Canton Zurich, and SER); the Ministry of Science and Technology, Taipei; the Thailand Center of Excellence in Physics, the Institute for the Promotion of Teaching Science and Technology of Thailand, Special Task Force for Activating Research and the National Science and Technology Development Agency of Thailand; the Scientific and Technical Research Council of Turkey, and Turkish Atomic Energy Authority; the National Academy of Sciences of Ukraine, and State Fund for Fundamental Researches, Ukraine; the Science and Technology Facilities Council, UK; the US Department of Energy, and the US National Science Foundation. Individuals have received support from the Marie-Curie programme and the European Research Council and EPLANET (European Union); the Leventis Foundation; the A. P. Sloan Foundation; the Alexander von Humboldt Foundation; the Belgian Federal Science Policy Office; the Fonds pour la Formation à la Recherche dans l'Industrie et dans l'Agriculture (FRIA-Belgium); the Agentschap voor Innovatie door Wetenschap en Technologie (IWT-Belgium); the Ministry of Education, Youth and Sports (MEYS) of the Czech Republic; the Council of Science and Industrial Research, India; the HOMING PLUS programme of Foundation for Polish Science, cofinanced from European Union, Regional Development Fund; the Compagnia di San Paolo (Torino); the Consorzio per la Fisica (Trieste); MIUR project 20108T4XTM (Italy); the Thalis and Aristeia programmes cofinanced by EU-ESF and the Greek NSRF; and the National Priorities Research Program by Qatar National Research Fund.Attached Files
Published - art_10.1140_epjc_s10052-015-3435-4.pdf
Submitted - 1502.05387v1.pdf
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Additional details
Additional titles
- Alternative title
- Nuclear effects on the transverse momentum spectra of charged particles in pPb collisions at a nucleon-nucleon center-of-mass energy of 5.02 TeV
Identifiers
- Eprint ID
- 55591
- Resolver ID
- CaltechAUTHORS:20150306-105543392
Related works
- Describes
- http://arxiv.org/abs/1502.05387 (URL)
Funding
- Austrian Federal Ministry of Science and Research and the Austrian Science Fund
- Belgian Fonds de la Recherche Scientifique and Fonds voor Wetenschappelijk Orderzoek
- CNPq, CAPES, FAPERJ, and FAPESP (Brazil)
- Bulgarian Ministry of Education and Science
- CERN
- Chinese Academy of Sciences, Ministry of Science and Technology, and National Natural Science Foundation of China
- COLCIENCIAS (Colombia)
- Croatian Ministry of Science, Education and Sport
- Croatian Science Foundation
- Research Promotion Foundation, Cyprus
- Ministry of Education and Research, Estonian Research Council
- IUT23-4
- Ministry of Education and Research, Estonian Research Council
- IUT23-6
- European Regional Development Fund, Estonia
- Academy of Finland, Finnish Ministry of Education, and Helsinki Institute of Physics
- Institut National de Physique Nucléaire et de Physique des Particules / CNRS, and Commissariat à l'Énergie Atomique et aux Énergies Alternatives / CEA, France
- Bundesministerium für Bildung und Forschung (BMBF)
- General Secretariat for Research and Technology, Greece
- National Scientific Research Foundation, and National Innovation Office, Hungary
- Department of Atomic Energy and the Department of Science and Technology, India
- Institute for Studies in Theoretical Physics and Mathematics, Iran
- Science Foundation, Ireland
- Istituto Nazionale di Fisica Nucleare (INFN)
- Ministry of Science, ICT and Future Planning, and National Research Foundation (Korea)
- Lithuanian Academy of Sciences
- Ministry of Education, and University of Malaya (Malaysia)
- CINVESTAV, CONACYT, SEP, and UASLP-FAI (Mexico)
- Ministry of Business, Innovation and Employment, New Zealand
- Pakistan Atomic Energy Commission
- Ministry of Science and Higher Education and the National Science Centre, Poland
- Fundação para a Ciência e a Tecnologia (FCT)
- JINR (Dubna)
- Ministry of Education and Science of the Russian Federation
- Federal Agency of Atomic Energy of the Russian Federation
- Russian Academy of Sciences
- Russian Foundation for Basic Research
- Ministry of Education, Science and Technological Development of Serbia
- Secretaría de Estado de Investigaciόn, Desarrollo e Innovaciόn and Programa Consolider-Ingenio 2010, Spain
- ETH Board, ETH Zurich, PSI, SNF, UniZH, Canton Zurich, and SER
- Ministry of Science and Technology, Taipei
- Thailand center of Excellence in Physics
- Institute for the Promotion of Teaching Science and Technology of Thailand
- Special Task Force for Activating Research and the National Science and Technology Development Agency of Thailand
- Scientific and Technical Research Council of Turkey and Turkish Atomic Energy Authority
- National Academy of Sciences of Ukraine
- State Fund for Fundamental Researches, Ukraine
- Science and Technology Facilities Council (STFC)
- Department of Energy (DOE)
- NSF
- Marie-Curie programme and the European Research Council and EPLANET (European Union)
- Leventis Foundation
- Alfred P. Sloan Foundation
- Alexander von Humboldt Foundation
- Belgian Federal Science Policy Office
- Fonds pour la Formation à la Recherche dans l'índustrie et dans l'Ágriculture (FRIA-Belgium)
- Agentschap voor Innovatie door Wetenschap en Technologie (IWT-Belgium)
- Ministry of Education, Youth and Sports (MEYS) of the Czech Republic
- Council of Science and Industrial Research, India
- HOMING PLUS programme of Foundation for Polish Science cofinanced from European Union
- Regional Development Fund
- Compagnia di San Paolo (Torino)
- Consorzio per la Fisica (Trieste)
- Ministero dell'Istruzione, dell'Università e della Ricerca (MIUR)
- 20108T4XTM
- Thalis and Aristeia programmes cofinanced by EU-ESF
- Greek NSRF
- Qatar National Research Fund National Priorities Research Program
- Deutsche Forschungsgemeinschaft (DFG)
- Helmholtz-Gemeinschaft Deutscher Forschungszentren (Germany)
- SCOAP3
Dates
- Created
-
2015-03-06Created from EPrint's datestamp field
- Updated
-
2021-11-10Created from EPrint's last_modified field