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Observation and studies of jet quenching in PbPb collisions at √sNN = 2.76 TeV

Chatrchyan, S. and Apresyan, A. and Bornheim, A. and Bunn, J. and Chen, Y. and Gataullin, M. and Ma, Y. and Mott, A. and Newman, H. B. and Rogan, C. and Timciuc, V. and Traczyk, P. and Veverka, J. and Wilkinson, R. and Yang, Y. and Zhu, R. Y. (2011) Observation and studies of jet quenching in PbPb collisions at √sNN = 2.76 TeV. Physical Review C, 84 (2). Art. No. 024906. ISSN 0556-2813. https://resolver.caltech.edu/CaltechAUTHORS:20110908-104523014

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Abstract

Jet production in PbPb collisions at a nucleon-nucleon center-of-mass energy of 2.76 TeV was studied with the Compact Muon Solenoid (CMS) detector at the LHC, using a data sample corresponding to an integrated luminosity of 6.7 μb^(−1). Jets are reconstructed using the energy deposited in the CMS calorimeters and studied as a function of collision centrality. With increasing collision centrality, a striking imbalance in dijet transverse momentum is observed, consistent with jet quenching. The observed effect extends from the lower cutoff used in this study (jet pT = 120 GeV/c) up to the statistical limit of the available data sample (jet pT ≈ 210 GeV/c). Correlations of charged particle tracks with jets indicate that the momentum imbalance is accompanied by a softening of the fragmentation pattern of the second most energetic, away-side jet. The dijet momentum balance is recovered when integrating low transverse momentum particles distributed over a wide angular range relative to the direction of the away-side jet.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1103/PhysRevC.84.024906DOIUNSPECIFIED
http://link.aps.org/doi/10.1103/PhysRevC.84.024906PublisherUNSPECIFIED
http://prc.aps.org/abstract/PRC/v84/i2/e024906PublisherUNSPECIFIED
ORCID:
AuthorORCID
Apresyan, A.0000-0002-6186-0130
Bornheim, A.0000-0002-0128-0871
Bunn, J.0000-0002-3798-298X
Chen, Y.0000-0003-2582-6469
Newman, H. B.0000-0003-0964-1480
Rogan, C.0000-0002-4166-4503
Zhu, R. Y.0000-0003-3091-7461
Additional Information:© 2011 CERN, for the CMS Collaboration. Published by the American Physical Society under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Received 10 February 2011; published 12 August 2011. 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 Estonian Academy of Sciences and NICPB; the Academy of Finland, Finnish Ministry of Education, 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 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 UASLPFAI); the Pakistan Atomic Energy Commission; the State Commission for Scientific Research, Poland; the Fundação para a Ciência e a Tecnologia, Portugal; JINR (Armenia, Belarus, Georgia, Ukraine, Uzbekistan); the Ministry of Science and Technologies of the Russian Federation, and Russian Ministry of Atomic Energy; the Ministry of Science and Technological Development of Serbia; the Ministerio de Ciencia e Innovaciόn, 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 Associazione per lo Sviluppo Scientifico e Tecnologico del Piemonte (Italy); the Belgian Federal Science Policy Office; the Fonds pour la Formation à la Recherche dans l’Industrie et dans l’Agriculture (FRIA-Belgium); and the Agentschap voor Innovatie door Wetenschap en Technologie (IWT-Belgium).
Funders:
Funding AgencyGrant Number
Austrian Federal Ministry of Science and ResearchUNSPECIFIED
Belgium Fonds de la Recherche ScientifiqueUNSPECIFIED
Fonds voor Wetenschappelijk OnderzoekUNSPECIFIED
CNPq (Brazil)UNSPECIFIED
CAPES (Brazil)UNSPECIFIED
FAPERJ (Brazil)UNSPECIFIED
FAPESP (Brazil)UNSPECIFIED
Bulgarian Ministry of Education and ScienceUNSPECIFIED
CERNUNSPECIFIED
Chinese Academy of SciencesUNSPECIFIED
Ministry of Science and TechnologyUNSPECIFIED
National Science Foundation of ChinaUNSPECIFIED
COLCIENCIAS (Colombia)UNSPECIFIED
Croatian Ministry of Science, Education and SportUNSPECIFIED
Research Promotion Foundation, CyprusUNSPECIFIED
Estonian Academy of Sciences and NICPBUNSPECIFIED
Academy of FinlandUNSPECIFIED
Finnish Ministry of EducationUNSPECIFIED
Helsinki Institute of PhysicsUNSPECIFIED
Institut National de Physique Nucléaire et de Physique des Particules/CNRSUNSPECIFIED
Commissariat à l’Énergie Atomique et aux Énergies Alternatives (CEA) FranceUNSPECIFIED
Bundesministerium für Bildung und Forschung (Germany)UNSPECIFIED
Deutsche Forschungsgemeinschaft (Germany)UNSPECIFIED
Helmholtz-Gemeinschaft Deutscher Forschungszentren (Germany)UNSPECIFIED
General Secretariat for Research and Technology (Greece)UNSPECIFIED
National Scientific Research Foundation, and National Office for Research and Technology (Hungary)UNSPECIFIED
Department of Atomic Energy and Department of Science and Technology of IndiaUNSPECIFIED
Institute for Studies in Theoretical Physics and Mathematics (Iran)UNSPECIFIED
Science Foundation (Ireland)UNSPECIFIED
Istituto Nazionale di Fisica Nucleare (Italy)UNSPECIFIED
Korean Ministry of Education, Science and Technology and the World Class University Program of NRF (KOREA)UNSPECIFIED
Lithuanian Academy of SciencesUNSPECIFIED
CINVESTAV (Mexico)UNSPECIFIED
CONACyT (Mexico)UNSPECIFIED
SEP and UASLP-FAI (Mexico)UNSPECIFIED
Pakistan Atomic Energy CommissionUNSPECIFIED
State Commission for Scientific Research (Poland)UNSPECIFIED
Fundação para a Ciência e a Tecnologia (Portugal)UNSPECIFIED
JINR (Armenia, Belarus, Georgia, Ukraine, Uzbekistan)UNSPECIFIED
Ministry of Science and Technology of the Russian FederationUNSPECIFIED
Russian Ministry of Atomic EnergyUNSPECIFIED
Ministry of Science and Technological Development of SerbiaUNSPECIFIED
Ministerio de Ciencia e Innovacion, and Programa Consolider-Ingenio 2010, SpainUNSPECIFIED
ETH BoardUNSPECIFIED
ETH ZurichUNSPECIFIED
PSIUNSPECIFIED
SNFUNSPECIFIED
UniZHUNSPECIFIED
Canton ZurichUNSPECIFIED
SERUNSPECIFIED
National Science Council (Taipei)UNSPECIFIED
Scientific and Technical Research Council of TurkeyUNSPECIFIED
Turkish Atomic Energy AuthorityUNSPECIFIED
Science and Technology Facilities Council (UK)UNSPECIFIED
Department of Energy (DOE)UNSPECIFIED
NSFUNSPECIFIED
Marie Curie programUNSPECIFIED
European Research Council (European Union)UNSPECIFIED
Leventis FoundationUNSPECIFIED
A. P. Sloan FoundationUNSPECIFIED
Alexander von Humboldt FoundationUNSPECIFIED
Associazione per lo Sviluppo Scientifico e Tecnologico del Piemonte (Italy)UNSPECIFIED
Belgian Federal Science Policy OfficeUNSPECIFIED
Fonds pour la Formation à la Recherche dans l’índustrie et dans l’Ágriculture (FRIA-Belgium)UNSPECIFIED
Agentschap voor Innovatie door Wetenschap en Technologie (IWT-Belgium)UNSPECIFIED
Issue or Number:2
Classification Code:PACS: 25.75.Gz, 13.85.Ni, 25.75.Bh
Record Number:CaltechAUTHORS:20110908-104523014
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20110908-104523014
Official Citation:Observation and studies of jet quenching in PbPb collisions at √sNN=2.76 TeV S. Chatrchyan et al. (CMS Collaboration) Published 12 August 2011 (26 pages) 024906
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:25254
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:08 Sep 2011 18:36
Last Modified:09 Mar 2020 13:19

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