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Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/111345
Title: 
Modification of jet shapes in PbPb collisions at root s(NN)=2.76 TeV
Author(s): 
Institution: 
  • CERN
  • Yerevan Phys Inst
  • Inst Hochenergiephys OeAW
  • Natl Ctr Particle & High Energy Phys
  • Univ Antwerp
  • Vrije Univ Brussel
  • Univ Libre Brussels
  • Univ Ghent
  • Catholic Univ Louvain
  • Univ Mons
  • Centro Brasileiro de Pesquisas Físicas (CBPF)
  • Universidade do Estado do Rio de Janeiro (UERJ)
  • Universidade Estadual Paulista (UNESP)
  • Universidade Federal do ABC (UFABC)
  • Bulgarian Acad Sci
  • Univ Sofia
  • Inst High Energy Phys
  • Peking Univ
  • Universidad de los Andes
  • Tech Univ Split
  • Univ Split
  • Rudjer Boskovic Inst
  • Univ Cyprus
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  • Univ Lyon 1
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  • DESY
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  • Univ Karlsruhe
  • NCSR Demokritos
  • Univ Athens
  • Univ Ioannina
  • KFKI Res Inst Particle & Nucl Phys
  • Inst Nucl Res ATOMKI
  • Debrecen Univ Med
  • Natl Inst Sci Educ & Res
  • Panjab Univ
  • University of Delhi
  • Saha Inst Nucl Phys
  • Bhabha Atom Res Ctr
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ISSN: 
0370-2693
Sponsorship: 
  • BMWF (Austria)
  • FWF (Austria)
  • FNRS (Belgium)
  • FWO (Belgium)
  • 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)
  • MES (Bulgaria)
  • CERN
  • CAS (China)
  • MoST (China)
  • NSFC (China)
  • COLCIENCIAS (Colombia)
  • MSES (Croatia)
  • RPF (Cyprus)
  • MoER
  • ERDF (Estonia)
  • Academy of Finland (Finland)
  • MEC (Finland)
  • HIP (Finland)
  • CEA (France)
  • CNRS/IN2P3 (France)
  • BMBF (Germany)
  • DFG (Germany)
  • HGF (Germany)
  • GSRT (Greece)
  • OTKA (Hungary)
  • NKTH (Hungary)
  • DAE (India)
  • DST (India)
  • IPM (Iran)
  • SFI (Ireland)
  • INFN (Italy)
  • NRF (Republic of Korea)
  • WCU (Republic of Korea)
  • LAS (Lithuania)
  • CINVESTAV (Mexico)
  • CONACYT (Mexico)
  • SEP (Mexico)
  • UASLP-FAI (Mexico)
  • MBIE (New Zealand)
  • PAEC (Pakistan)
  • MSHE (Poland)
  • NSC (Poland)
  • FCT (Portugal)
  • JINR (Dubna)
  • MON (Russia)
  • RosAtom (Russia)
  • RAS (Russia)
  • RFBR (Russia)
  • MESTD (Serbia)
  • SEIDI (Spain)
  • CPAN (Spain)
  • Swiss Funding Agencies (Switzerland)
  • NSC (Taipei)
  • ThEPCenter (Thailand)
  • IPST (Thailand)
  • STAR (Thailand)
  • NSTDA (Thailand)
  • TUBITAK (Turkey)
  • TAEK (Turkey)
  • NASU (Ukraine)
  • STFC (United Kingdom)
  • DOE (USA)
  • NSF (USA)
  • Marie-Curie programme (European Union)
  • European Research Council (European Union)
  • EPLANET (European Union)
  • Leventis Foundation
  • A.P. Sloan Foundation
  • Alexander von Humboldt Foundation
  • Belgian Federal Science Policy Office
  • Fonds pour la Formation a 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 Czech Republic
  • Council of Science and Industrial Research, India
  • Compagnia di San Paolo (Torino)
  • HOMING PLUS programme of Foundation for Polish Science
  • EU, Regional Development Fund
  • Thalis programme
  • EU-ESF
  • Greek NSRF
  • Aristeia programme
Sponsorship Process Number: 
MoERSF0690030s09
Abstract: 
The first measurement of jet shapes, defined as the fractional transverse momentum radial distribution, for inclusive jets produced in heavy-ion collisions is presented. Data samples of PbPb and pp collisions, corresponding to integrated luminosities of 150 mu b(-1) and 5.3 pb(-1) respectively, were collected at a nucleon-nucleon centre-of-mass energy of root s(NN) = 2.76 TeV with the CMS detector at the LHC. The jets are reconstructed with the anti-k(T) algorithm with a distance parameter R = 0.3, and the jet shapes are measured for charged particles with transverse momentum P-T > 1 GeV/c. The jet shapes measured in PbPb collisions in different collision centralities are compared to reference distributions based on the pp data. A centrality-dependent modification of the jet shapes is observed in the more central PbPb collisions, indicating a redistribution of the energy inside the jet cone. This measurement provides information about the parton shower mechanism in the hot and dense medium produced in heavy-ion collisions. (C) 2014 The Authors. Published by Elsevier B.V.
Issue Date: 
7-Mar-2014
Citation: 
Physics Letters B. Amsterdam: Elsevier Science Bv, v. 730, p. 243-263, 2014.
Time Duration: 
243-263
Publisher: 
Elsevier B.V.
Keywords: 
  • CMS
  • Heavy ion physics
  • Jet shapes
Source: 
http://dx.doi.org/10.1016/j.physletb.2014.01.042
URI: 
Access Rights: 
Acesso aberto
Type: 
outro
Source:
http://repositorio.unesp.br/handle/11449/111345
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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