Published March 2012
| Version Published
Journal Article
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Study of high-pT charged particle suppression in PbPb compared to pp collisions at √sNN = 2.76 TeV
Abstract
The transverse momentum spectra of charged particles have been measured in pp and PbPb collisions at √sNN=276 TeV by the CMS experiment at the LHC. In the transverse momentum range p_T = 5–10 GeV/c, the charged particle yield in the most central PbPb collisions is suppressed by up to a factor of 7 compared to the pp yield scaled by the number of incoherent nucleon–nucleon collisions. At higher p_T, this suppression is significantly reduced, approaching roughly a factor of 2 for particles with p_T in the range p_T=40–100 GeV/c.
Additional Information
© 2012 CERN for the benefit of the CMS collaboration. This article is distributed under the terms of the Creative Commons Attribution License which permits any use, distribution, and reproduction in any medium, provided the original author(s) and the source are credited. Received: 12 February 2012. Revised: 26 February 2012. Published online: 29 March 2012. We wish to congratulate our colleagues in the CERN accelerator departments for the excellent performance of the LHC machine. We thank the technical and administrative staff at CERN and other CMS institutes. This work was supported by the Austrian Federal Ministry of Science and Research; the Belgium 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; the Research Promotion Foundation, Cyprus; the Ministry of Education and Research, Recurrent financing contract SF0690030s09 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 Office for Research and Technology, 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 Korean Ministry of Education, Science and Technology and the World Class University program of NRF, Korea; the Lithuanian Academy of Sciences; the Mexican Funding Agencies (CINVESTAV, CONACYT, SEP, and UASLP-FAI); the Ministry of Science and Innovation, New Zealand; the Pakistan Atomic Energy Commission; the Ministry of Science and Higher Education and the National Science Centre, Poland; the Fundação para a Ciência e a Tecnologia, Portugal; JINR (Armenia, Belarus, Georgia, Ukraine, Uzbekistan); 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 Science and Technological Development of Serbia; the Ministerio de Ciencia e Innovación, and Programa Consolider-Ingenio 2010, Spain; the Swiss Funding Agencies (ETH Board, ETH Zurich, PSI, SNF, UniZH, Canton Zurich, and SER); the National Science Council, Taipei; the Scientific and Technical Research Council of Turkey, and Turkish Atomic Energy Authority; 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 (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 Council of Science and Industrial Research, India; and the HOMING PLUS programme of Foundation for Polish Science, cofinanced from European Union, Regional Development Fund.Attached Files
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Additional details
Identifiers
- Eprint ID
- 31343
- Resolver ID
- CaltechAUTHORS:20120508-094922484
Related works
- Describes
- http://arxiv.org/abs/arXiv:1202.2554 (URL)
Funding
- Austrian Federal Ministry of Science and Research
- Belgium Fonds de la Recherche Scientifique, and Fonds voor Wetenschappelijk Onder-zoek
- CNPq (Brazil)
- CAPES (Brazil)
- FAPERJ (Brazil)
- FAPESP (Brazil)
- Bulgarian Ministry of Education and Science
- CERN
- Chinese Academy of Sciences
- Ministry of Science and Technology
- National Natural Science Foundation of China
- COLCIENCIAS (Colombia)
- Croatian Ministry of Science, Education and Sport
- Research Promotion Foundation, Cyprus
- Ministry of Education and Research
- SF0690030s09
- European Regional Development Fund, Estonia
- Academy of Finland
- Finnish Ministry of Education and Culture
- Helsinki Institute of Physics
- Institut National de Physique Nucléaire et de Physique des Particules/CNRS
- Commissariat à l'Énergie Atomique et aux Énergies Alternatives (CEA) France
- Bundesministerium für Bildung und Forschung and Deutsche Forschungsgemeinschaft (Germany)
- Helmholtz-Gemeinschaft Deutscher Forschungszentren, Germany
- General Secretariat for Research and Technology, Greece
- National Scientific Research Foundation, and National Office for Research and Technology (Hungary)
- Department of Atomic Energy and Department of Science and Technology of India
- Institute for Studies in Theoretical Physics and Mathematics (Iran)
- Science Foundation, Ireland
- Istituto Nazionale di Fisica Nucleare, Italy
- Korean Ministry of Education, Science and Technology and the World Class University Program of NRF (KOREA)
- Lithuanian Academy of Sciences
- CINVESTAV (Mexico)
- CONACyT (Mexico)
- SEP and UASLP-FAI (Mexico)
- Ministry of Science and Innovation, New Zealand
- Pakistan Atomic Energy Commission
- Ministry of Science and Higher Education (Poland)
- National Science Centre, Poland
- Fundação para a Ciência e a Tecnologia (Portugal)
- JINR (Armenia, Belarus, Georgia, Ukraine, Uzbekistan)
- 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 Science and Technological Development of Serbia
- Ministerio de Ciencia e Innovacion, and Programa Consolider-Ingenio 2010, Spain
- ETH Board
- ETH Zurich
- PSI
- SNF
- UniZH
- Canton Zurich and SER
- National Science Council (Taipei)
- Scientific and Technical Research Council of Turkey
- Turkish Atomic Energy Authority
- Science and Technology Facilities Council (United Kingdom)
- Department of Energy (DOE)
- NSF
- Marie Curie EIF (European Union)
- Leventis Foundation
- A.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)
- Council of Science and Industrial Research, India
- HOMING PLUS programme of Foundation for Polish Science
- European Union
- Regional Development Fund
Dates
- Created
-
2012-05-08Created from EPrint's datestamp field
- Updated
-
2021-11-09Created from EPrint's last_modified field