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dc.contributor.authorCMS Collaboration-
dc.description.abstractResults on two-particle angular correlations for charged particles emitted in pPb collisions at a nucleon-nucleon center-of-mass energy of 5.02 TeV are presented. The analysis uses two million collisions collected with the CMS detector at the LHC. The correlations are studied over a broad range of pseudorapidity, eta, and full azimuth, phi, as a function of charged particle multiplicity and particle transverse momentum, p(T). In high-multiplicity events, a long-range (2 < vertical bar Delta eta vertical bar < 4), near-side (Delta phi approximate to 0) structure emerges in the two-particle Delta eta-Delta phi correlation functions. This is the first observation of such correlations in proton-nucleus collisions, resembling the ridge-like correlations seen in high-multiplicity pp collisions at root s = 7 TeV and in AA collisions over a broad range of center-of-mass energies. The correlation strength exhibits a pronounced maximum in the range of p(T) = 1-1.5 GeV/c and an approximately linear increase with charged particle multiplicity for high-multiplicity events. These observations are qualitatively similar to those in pp collisions when selecting the same observed particle multiplicity, while the overall strength of the correlations is significantly larger in pPb collisions. (C) 2012 CERN. Published by Elsevier B.V. All rights reserved.en_US
dc.description.sponsorshipBMWF; FWF (Austria)Austrian Science Fund (FWF); FNRSFonds de la Recherche Scientifique - FNRS; FWO (Belgium)FWO; CNPqNational Council for Scientific and Technological Development (CNPq); CAPESCAPES; FAPERJCarlos Chagas Filho Foundation for Research Support of the State of Rio de Janeiro (FAPERJ); FAPESP (Brazil)Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP); MEYS (Bulgaria); CERN; CASChinese Academy of Sciences; MoST; NSFC (China)National Natural Science Foundation of China (NSFC); COLCIENCIAS (Colombia)Departamento Administrativo de Ciencia, Tecnologia e Innovacion Colciencias; MSES (Croatia); RPF (Cyprus); MoER [SF0690030s09]; ERDF (Estonia)European Union (EU); Academy of FinlandAcademy of Finland; MEC; HIP (Finland); CEAFrench Atomic Energy Commission; CNRS/IN2P3 (France)Centre National de la Recherche Scientifique (CNRS); BMBFFederal Ministry of Education & Research (BMBF); DFGGerman Research Foundation (DFG); HGF (Germany); GSRT (Greece)Greek Ministry of Development-GSRT; OTKAOrszagos Tudomanyos Kutatasi Alapprogramok (OTKA); NKTH (Hungary)National Office for Research and Technology; DAEDepartment of Atomic Energy (DAE); DST (India)Department of Science & Technology (India); IPM (Iran); SFI (Ireland)Science Foundation Ireland; INFN (Italy)Istituto Nazionale di Fisica Nucleare (INFN); NRF; WCU (Republic of Korea); LAS (Lithuania); CINVESTAV; CONACYTConsejo Nacional de Ciencia y Tecnologia (CONACyT); SEP; UASLP-FAI (Mexico); MSI (New Zealand); PAEC (Pakistan); MSHE; NSC (Poland); FCT (Portugal)Portuguese Foundation for Science and Technology; JINR (Armenia); JINR (Belarus); JINR (Georgia); JINR (Ukraine); JINR (AUzbekistan); MON; RosAtom; RASRussian Academy of SciencesRegione Sardegna; RFBR (Russia)Russian Foundation for Basic Research (RFBR); MSTD (Serbia); SEIDI; CPAN (Spain); Swiss Funding Agencies (Switzerland); NSC (Taipei); ThEP; IPST; NECTEC (Thailand); TUBITAKTurkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK); TAEK (Turkey)Ministry of Energy & Natural Resources - Turkey; NASU (Ukraine); STFC (United Kingdom)Science & Technology Facilities Council (STFC); DOEUnited States Department of Energy (DOE); NSF (USA)National Science Foundation (NSF); Science and Technology Facilities CouncilScience & Technology Facilities Council (STFC) [ST/G502347/1, PP/D004284/1, ST/K001604/1 DMUK, ST/K003844/1, ST/I000410/1, ST/H000925/1, ST/K001604/1 T2K, GRIDPP, ST/K001604/1 CMS Upgrade, ST/I005912/1 GRIDPP, ST/K001604/1, ST/L00609X/1 GRIDPP, ST/I002200/1, ST/F007434/1, ST/K001604/1 SuperNEMO, ST/K001604/1 MICE/UKNF, ST/K003844/1 GRIDPP, ST/I003622/1 GRIDPP, ST/L00609X/1, ST/F007094/1, CMS, ST/K001604/1 LHCb Upgrades, ST/I005912/1, ST/F006748/1, ST/K001604/1 LHCb, ST/J005665/1, ST/I505580/1, ST/K001639/1, ST/J004901/1, ST/K001604/1 GRIDPP, ST/I505572/1] Funding Source: researchfish; Direct For Mathematical & Physical ScienNational Science Foundation (NSF)NSF - Directorate for Mathematical & Physical Sciences (MPS) [0969555, 1205960, 1211067, 1067907] Funding Source: National Science Foundation; Division Of PhysicsNational Science Foundation (NSF)NSF - Directorate for Mathematical & Physical Sciences (MPS) [1211067, 1205960, 1151640, 0969555] Funding Source: National Science Foundationen_US
dc.description.sponsorshipWe 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 centres 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: BMWF and FWF (Austria); FNRS and FWO (Belgium); CNPq, CAPES, FAPERJ, and FAPESP (Brazil); MEYS (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 (Republic of 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, Uzbekistan); MON, RosAtom, RAS and RFBR (Russia); MSTD (Serbia); SEIDI and CPAN (Spain); Swiss Funding Agencies (Switzerland); NSC (Taipei); ThEP, IPST and NECTEC (Thailand); TUBITAK and TAEK (Turkey); NASU (Ukraine); STFC (United Kingdom); DOE and NSF (USA).en_US
dc.publisherElsevier Ltd.en_US
dc.relation.ispartofPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physicsen_US
dc.subjectHeavy ionsen_US
dc.titleObservation of long-range, near-side angular correlations in pPb collisions at the LHCen_US
dc.departmentİzmir Institute of Technology. Rectorateen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
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Appears in Collections:Rectorate / Rektörlük
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection
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