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Studies of jet quenching using isolated-photon + jet correlations in PbPb and pp collisions at √sN N = 2.76 TeV

dc.contributor.authorChatrchyan, Serguei
dc.contributor.authorBrochero Cifuentes, Javier Andrés 
dc.contributor.authorCabrillo Bartolomé, José Iban 
dc.contributor.authorCalderón Tazón, Alicia 
dc.contributor.authorChuang, S. H.
dc.contributor.authorDuarte Campderros, Jorge 
dc.contributor.authorFelcini, Marta
dc.contributor.authorFernández García, Marcos 
dc.contributor.authorGómez Gramuglio, Gervasio 
dc.contributor.authorGonzález Sánchez, Francisco Javier 
dc.contributor.authorJordá Lope, Clara
dc.contributor.authorLobelle Pardo, Patricia
dc.contributor.authorLópez Virto, María Amparo
dc.contributor.authorMarco de Lucas, Jesús 
dc.contributor.authorMarco de Lucas, Rafael José
dc.contributor.authorMartínez Rivero, Celso
dc.contributor.authorMatorras Weinig, Francisco 
dc.contributor.authorMuñoz Sánchez, Francisca Javiela
dc.contributor.authorRodrigo Anoro, Teresa 
dc.contributor.authorRodríguez Marrero, Ana Yaiza
dc.contributor.authorRuiz Jimeno, Alberto 
dc.contributor.authorScodellaro, Luca 
dc.contributor.authorSobrón Sañudo, Mar
dc.contributor.authorVila Álvarez, Iván  
dc.contributor.authorVilar Cortabitarte, Rocío 
dc.contributor.otherUniversidad de Cantabriaes_ES
dc.date.accessioned2023-03-17T13:03:18Z
dc.date.available2023-03-17T13:03:18Z
dc.date.issued2013-01
dc.identifier.issn0370-2693
dc.identifier.issn1873-2445
dc.identifier.urihttps://hdl.handle.net/10902/28231
dc.description.abstractResults from the first study of isolated-photon + jet correlations in relativistic heavy ion collisions are reported. The analysis uses data from PbPb collisions at a centre-of-mass energy of 2.76 TeV per nucleon pair corresponding to an integrated luminosity of 150 μb−1 recorded by the CMS experiment at the LHC. For events containing an isolated photon with transverse momentum pγ T > 60 GeV/c and an associated jet with pJet T > 30 GeV/c, the photon + jet pT imbalance is studied as a function of collision centrality and compared to pp data and pythia calculations at the same collision energy. Using the pγ T of the isolated photon as an estimate of the momentum of the associated parton at production, this measurement allows an unbiased characterisation of the in-medium parton energy loss. For more central PbPb collisions, a significant decrease in the ratio pJet T /pγ T relative to that in the pythia reference is observed. Furthermore, significantly more pγ T > 60 GeV/c photons in PbPb are observed not to have an associated pJet T > 30 GeV/c jet, compared to the reference. However, no significant broadening of the photon + jet azimuthal correlation is observed.es_ES
dc.description.sponsorshipWe congratulate our colleagues in the CERN accelerator departments for the excellent performance of the LHC machine. We thank 780 CMS Collaboration / Physics Letters B 718 (2013) 773–794 the technical and administrative staff at CERN and other CMS institutes, and acknowledge support from: FMSR (Austria); FNRS and FWO (Belgium); CNPq, CAPES, FAPERJ, and FAPESP (Brazil); MES (Bulgaria); CERN; CAS, MoST, and NSFC (China); COLCIENCIAS (Colombia); MSES (Croatia); RPF (Cyprus); MoER, SF0690030s09 and ERDF (Estonia); Academy of Finland, MEC, and HIP (Finland); CEA and CNRS/IN2P3 (France); BMBF, DFG, and HGF (Germany); GSRT (Greece); OTKA and NKTH (Hungary); DAE and DST (India); IPM (Iran); SFI (Ireland); INFN (Italy); NRF and WCU (Korea); LAS (Lithuania); CINVESTAV, CONACYT, SEP, and UASLP-FAI (Mexico); MSI (New Zealand); PAEC (Pakistan); MSHE and NSC (Poland); FCT (Portugal); JINR (Armenia, Belarus, Georgia, Ukraine, Uzbek- istan); MON, RosAtom, RAS and RFBR (Russia); MSTD (Serbia); MICINN and CPAN (Spain); Swiss Funding Agencies (Switzerland); NSC (Taipei); TUBITAK and TAEK (Turkey); STFC (United Kingdom); DOE and NSF (USA).es_ES
dc.format.extent22 p.es_ES
dc.language.isoenges_ES
dc.publisherElsevieres_ES
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International. ©2012 CERN. Published by Elsevier B.V. Open access under CC BY-NC-ND licensees_ES
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.sourcePhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 2013, 718(3), 773-794es_ES
dc.subject.otherCMSes_ES
dc.subject.otherPhysicses_ES
dc.subject.otherHeavy iones_ES
dc.subject.otherPhotones_ES
dc.titleStudies of jet quenching using isolated-photon + jet correlations in PbPb and pp collisions at √sN N = 2.76 TeVes_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.relation.publisherVersionhttps://doi.org/10.1016/j.physletb.2012.11.003es_ES
dc.rights.accessRightsopenAccesses_ES
dc.identifier.DOI10.1016/j.physletb.2012.11.003
dc.type.versionpublishedVersiones_ES


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Attribution-NonCommercial-NoDerivatives 4.0 International. ©2012 CERN. Published by Elsevier B.V. Open access under CC BY-NC-ND licenseExcepto si se señala otra cosa, la licencia del ítem se describe como Attribution-NonCommercial-NoDerivatives 4.0 International. ©2012 CERN. Published by Elsevier B.V. Open access under CC BY-NC-ND license