Published February 2016
| Published + Submitted
Journal Article
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Correlations between jets and charged particles in PbPb and pp collisions at √s_(NN) = 2.76 TeV
Abstract
The quark-gluon plasma is studied via medium-induced changes to correlations between jets and charged particles in PbPb collisions compared to pp reference data. This analysis uses data sets from PbPb and pp collisions with integrated luminosities of 166 μb^(−1) and 5.3 pb^(−1), respectively, collected at √s_(NN) = 2.76 TeV. The angular distributions of charged particles are studied as a function of relative pseudorapidity (Δη) and relative azimuthal angle (Δϕ) with respect to reconstructed jet directions. Charged particles are correlated with all jets with transverse momentum (p_T) above 120 GeV, and with the leading and subleading jets (the highest and second-highest in p_T, respectively) in a selection of back-to-back dijet events. Modifications in PbPb data relative to pp reference data are characterized as a function of PbPb collision centrality and charged particle p_T. A centrality-dependent excess of low-p_T particles is present for all jets studied, and is most pronounced in the most central events. This excess of low-p_T particles follows a Gaussian-like distribution around the jet axis, and extends to large relative angles of Δη ≈ 1 and Δϕ ≈ 1.
Additional Information
© 2016 CERN, for the benefit of the CMS Collaboration. This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited. Article funded by SCOAP3. Received: January 1, 2016; Accepted: February 7, 2016; Published: February 23, 2016. 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 centers 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: BMWFW and FWF (Austria); FNRS and FWO (Belgium); CNPq, CAPES, FAPERJ, and FAPESP (Brazil); MES (Bulgaria); CERN; CAS, MoST, and NSFC (China); COLCIENCIAS (Colombia); MSES and CSF (Croatia); RPF (Cyprus); MoER, ERC IUT and ERDF (Estonia); Academy of Finland, MEC, and HIP (Finland); CEA and CNRS/IN2P3 (France); BMBF, DFG, and HGF (Germany); GSRT (Greece); OTKA and NIH (Hungary); DAE and DST (India); IPM (Iran); SFI (Ireland); INFN (Italy); MSIP and NRF (Republic of Korea); LAS (Lithuania); MOE and UM (Malaysia); CINVESTAV, CONACYT, SEP, and UASLP-FAI (Mexico); MBIE (New Zealand); PAEC (Pakistan); MSHE and NSC (Poland); FCT (Portugal); JINR (Dubna); MON, RosAtom, RAS and RFBR (Russia); MESTD (Serbia); SEIDI and CPAN (Spain); Swiss Funding Agencies (Switzerland); MST (Taipei); ThEPCenter, IPST, STAR and NSTDA (Thailand); TUBITAK and TAEK (Turkey); NASU and SFFR (Ukraine); STFC (United Kingdom); DOE and NSF (U.S.A.). Individuals have received support from the Marie-Curie program 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 program of the Foundation for Polish Science, cofinanced from European Union, Regional Development Fund; the OPUS program of the National Science Center (Poland); the Compagnia di San Paolo (Torino); MIUR project 20108T4XTM (Italy); the Thalis and Aristeia programs cofinanced by EU-ESF and the Greek NSRF; the National Priorities Research Program by Qatar National Research Fund; the Rachadapisek Sompot Fund for Postdoctoral Fellowship, Chulalongkorn University (Thailand); the Chulalongkorn Academic into Its 2nd Century Project Advancement Project (Thailand); and the Welch Foundation, contract C-1845.Attached Files
Published - art_10.1007_JHEP02_2016_156.pdf
Submitted - 1601.00079v2.pdf
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Additional details
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- CaltechAUTHORS:20160613-154957919
- Bundesministerium für Wissenschaft, Forschung und Wirtschaft (BMWFW)
- FWF Der Wissenschaftsfonds
- Fonds de la Recherche Scientifique (FNRS)
- Fonds Wetenschappelijk Onderzoek (FWO)
- Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
- Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
- Fundação de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ)
- Fundação de Amparo à Pesquisa do Estado de Sao Paulo (FAPESP)
- Bulgarian Ministry of Education and Science
- European Organization for Nuclear Research (CERN)
- Chinese Academy of Sciences (CAS)
- Ministry of Science and Technology (China)
- National Natural Science Foundation of China
- Departamento Administrativo de Ciencia, Tecnología e Innovación (COLCIENCIAS)
- Croatian Ministry of Science, Education and Sport
- Croatian Science Foundation
- Research Promotion Foundation, Cyprus
- Estonian Ministry of Education and Research
- Estonian Research Council
- European Regional Development Fund, Estonia
- Academy of Finland
- Ministry of Education and Culture (Finland)
- Helsinki Institute of Physics
- Commissariat à l'Énergie Atomique et aux Énergies Alternatives (CEA)
- Centre National de la Recherche Scientifique (CNRS)
- Institut National de Physique Nucléaire et de Physique des Particules (IN2P3)
- Bundesministerium für Bildung und Forschung (BMBF)
- Deutsche Forschungsgemeinschaft (DFG)
- Helmholtz-Gemeinschaft Deutscher Forschungszentren (HGF)
- General Secretariat for Research and Technology (GSRT)
- Hungarian Scientific Research Fund (OTKA)
- National Innovation Office (Hungary)
- Department of Atomic Energy (India)
- 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 (Korea)
- National Research Foundation of Korea
- Lithuanian Academy of Sciences
- Ministry of Education (Malaysia)
- University of Malaya (Malaysia)
- CINVESTAV (Mexico)
- CONACyT (Mexico)
- SEP (Mexico)
- UASLP-FAI (Mexico)
- Ministry of Business, Innovation and Employment (New Zealand)
- Pakistan Atomic Energy Commission
- Ministry of Science and Higher Education (Poland)
- National Science Centre (Poland)
- Fundação para a Ciência e a Tecnologia (FCT)
- Joint Institute for Nuclear Research (JINR)
- Ministry of Education and Science of the Russian Federation
- RosAtom (Russia)
- Russian Academy of Sciences
- Russian Foundation for Basic Research
- Ministry of Education, Science and Technological Development (Serbia)
- State Secretariat for Research, Development and Innovation (SEIDI)
- Centro Nacional de Física de Partículas, Astropartículas y Nuclear (CPAN)
- Swiss Funding Agencies (Switzerland)
- Ministry of Science and Technology (Taipei)
- Thailand Center of Excellence in Physics
- Institute for the Promotion of Teaching Science and Technology (Thailand)
- Special Task Force for Activating Research (Thailand)
- National Science and Technology Development Agency (Thailand)
- Türkiye Bilimsel ve Teknolojik Araştırma Kurumu (TÜBİTAK)
- Türkiye Atom Enerjisi Kurumu (TAEK)
- National Academy of Sciences (Ukraine)
- State Fund for Fundamental Researches (Ukraine)
- Science and Technology Facilities Council (STFC)
- Department of Energy (DOE)
- NSF
- Marie Curie Fellowship
- European Research Council (ERC)
- EPLANET
- Leventis Foundation
- Alfred P. Sloan Foundation
- Alexander von Humboldt Foundation
- Belgian Federal Science Policy Office (BELSPO)
- Fonds pour la Formation à la Recherche dans l'Industrie et dans l'Agriculture (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)
- Foundation for Polish Science HOMING PLUS program
- European Union Regional Development Fund
- National Science Center (Poland) OPUS program
- Compagnia di San Paolo (Torino)
- 20108T4XTM
- Ministero dell'Istruzione, dell'Università della Ricerca (MIUR)
- Thalis program
- Aristeia program
- European Social Fund
- Greek National Strategic Reference Framework (NSRF)
- Qatar National Research Fund National Priorities Research Program
- Rachadapisek Sompot Fund for Postdoctoral Fellowship
- Chulalongkorn University (Thailand)
- Chulalongkorn Academic into Its 2nd Century Project Advancement Project (Thailand)
- C-1845
- Welch Foundation
- SCOAP3
- Created
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2016-06-14Created from EPrint's datestamp field
- Updated
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2021-11-11Created from EPrint's last_modified field
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