Observation of long-range, near-side angular correlations in pPb collisions at the LHC

S Chatrchyan; G Codispoti; C Albajar; J. F Trocóniz; CMS Collaboration

doi:10.1016/j.physletb.2012.11.025

Back

Observation of long-range, near-side angular correlations in pPb collisions at the LHC

Journal article

Open access

Peer reviewed

Observation of long-range, near-side angular correlations in pPb collisions at the LHC

S Chatrchyan, G Codispoti, C Albajar, J. F Trocóniz and CMS Collaboration

Physics letters. B, Vol.718(3), pp.795-814

01/08/2013

DOI: 10.1016/j.physletb.2012.11.025

Files and links (1)

url

https://doi.org/10.1016/j.physletb.2012.11.025View

Published (Version of record) Open Access

Abstract

Artículo escrito por un elevado número de autores, solo se referencian el que aparece en primer lugar, el nombre del grupo de colaboración, si le hubiere, y los autores pertenecientes a la UAM Results 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, η, and full azimuth, φ, as a function of charged particle multiplicity and particle transverse momentum, pT. In high-multiplicity events, a long-range (2 < |Δη| < 4), near-side (Δφ ≈ 0) structure emerges in the two-particle Δη–Δφ correlation functions. This is the first observation of such correlations in proton–nucleus collisions, resembling the ridge-like correlations seen in highmultiplicity pp collisions at √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 pT = 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 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 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 UASLPFAI (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)

Physics

Física

Heavy ions

Details

Title: Subtitle: Observation of long-range, near-side angular correlations in pPb collisions at the LHC
Creators: S Chatrchyan
G Codispoti
C Albajar
J. F Trocóniz
CMS Collaboration
Contributors: Y Onel (Contributor) - University of Iowa, Physics and Astronomy
Resource Type: Journal article
Publication Details: Physics letters. B, Vol.718(3), pp.795-814
DOI: 10.1016/j.physletb.2012.11.025
ISSN: 0370-2693
eISSN: 1873-2445
Publisher: Elsevier
Grant note: DOI: 10.13039/501100007148, name: BMWF; name: FWF; DOI: 10.13039/501100002661, name: FNRS; name: FWO; DOI: 10.13039/501100003593, name: CNPq; DOI: 10.13039/501100002322, name: CAPES; DOI: 10.13039/501100004586, name: FAPERJ; DOI: 10.13039/501100001807, name: FAPESP; name: MEYS; DOI: 10.13039/100012470, name: CERN; name: CAS; name: MoST; DOI: 10.13039/501100001809, name: NSFC; DOI: 10.13039/100007637, name: COLCIENCIAS; name: MSES; name: RPF; name: MoER; DOI: 10.13039/501100008530, name: ERDF; DOI: 10.13039/501100002341, name: Academy of Finland; name: MEC; name: HIP; name: CEA; name: CNRS/IN2P3; name: BMBF; name: DFG; name: HGF; DOI: 10.13039/501100003448, name: GSRT; DOI: 10.13039/501100003549, name: OTKA; DOI: 10.13039/501100003827, name: NKTH; name: DAE; name: DST; name: IPM; name: SFI; name: INFN; name: NRF; name: WCU; name: LAS; DOI: 10.13039/501100008688, name: CINVESTAV; name: CONACYT; name: SEP; name: UASLP-FAI; name: MSI; DOI: 10.13039/501100008689, name: PAEC; name: MSHE; name: NSC; name: FCT; DOI: 10.13039/501100003822, name: JINR; name: MON; DOI: 10.13039/501100008687, name: RosAtom; name: RAS; DOI: 10.13039/501100002261, name: RFBR; name: MSTD; DOI: 10.13039/501100007136, name: SEIDI; name: CPAN; name: Swiss Funding Agencies; name: NSC; name: ThEP; name: IPST; DOI: 10.13039/501100011058, name: NECTEC; name: TUBITAK; DOI: 10.13039/100010440, name: TAEK; DOI: 10.13039/501100004742, name: NASU; DOI: 10.13039/501100000271, name: STFC; name: DOE; name: NSF
Language: English
Date published: 01/08/2013
Academic Unit: Physics and Astronomy
Record Identifier: 9984199840302771

Metrics

15 Record Views

600 Times Cited - Web of Science

See more details