Статья

Multiplicity and transverse momentum dependence of two- and four-particle correlations in pPb and PbPb collisions

S. ChatrchyanYerevan Physics Institute, Yerevan, ArmeniaV. KhachatryanYerevan Physics Institute, Yerevan, ArmeniaA. M. SirunyanYerevan Physics Institute, Yerevan, ArmeniaA. TumasyanYerevan Physics Institute, Yerevan, ArmeniaW. AdamAustrian Academy of Sciences, Vienna, AustriaT. BergauerAustrian Academy of Sciences, Vienna, AustriaM. DragicevicAustrian Academy of Sciences, Vienna, AustriaJ. EröAustrian Academy of Sciences, Vienna, AustriaC. FabjanAustrian Academy of Sciences, Vienna, AustriaM. FriedlAustrian Academy of Sciences, Vienna, AustriaR. FrühwirthAustrian Academy of Sciences, Vienna, AustriaV. M. GheteAustrian Academy of Sciences, Vienna, AustriaN. HörmannAustrian Academy of Sciences, Vienna, AustriaJ. HrubecAustrian Academy of Sciences, Vienna, AustriaM. JeitlerAustrian Academy of Sciences, Vienna, AustriaW. KiesenhoferAustrian Academy of Sciences, Vienna, AustriaV. KnünzAustrian Academy of Sciences, Vienna, AustriaM. KrammerAustrian Academy of Sciences, Vienna, AustriaI. KrätschmerAustrian Academy of Sciences, Vienna, AustriaD. LikoAustrian Academy of Sciences, Vienna, AustriaI. MikulecAustrian Academy of Sciences, Vienna, AustriaD. RabadyAustrian Academy of Sciences, Vienna, AustriaB. RahbaranAustrian Academy of Sciences, Vienna, AustriaC. RohringerAustrian Academy of Sciences, Vienna, AustriaH. RohringerAustrian Academy of Sciences, Vienna, AustriaR. SchöfbeckAustrian Academy of Sciences, Vienna, AustriaJ. StraussAustrian Academy of Sciences, Vienna, AustriaA. TaurokAustrian Academy of Sciences, Vienna, AustriaW. Treberer-TreberspurgAustrian Academy of Sciences, Vienna, AustriaW. WaltenbergerAustrian Academy of Sciences, Vienna, AustriaC.-E. WulzAustrian Academy of Sciences, Vienna, AustriaV. MossolovBelarusian State University, Minsk, BelarusN. ShumeikoBelarusian State University, Minsk, BelarusJ. Suarez GonzalezBelarusian State University, Minsk, BelarusSara AlderweireldtUniversity of Antwerp, Antwerp, BelgiumM. BansalUniversity of Antwerp, Antwerp, BelgiumS. B. BeriUniversity of Antwerp, Antwerp, BelgiumT. CornelisUniversity of Antwerp, Antwerp, BelgiumE. A. De WolfUniversity of Antwerp, Antwerp, BelgiumX. JanssenUniversity of Antwerp, Antwerp, BelgiumA. KnutssonUniversity of Antwerp, Antwerp, BelgiumS. LuyckxUniversity of Antwerp, Antwerp, BelgiumL. MucibelloUniversity of Antwerp, Antwerp, BelgiumS. OchesanuUniversity of Antwerp, Antwerp, BelgiumB. RolandUniversity of Antwerp, Antwerp, BelgiumR. RougnyUniversity of Antwerp, Antwerp, BelgiumZ. StaykovaUniversity of Antwerp, Antwerp, BelgiumH. Van HaevermaetUniversity of Antwerp, Antwerp, BelgiumP. Van MechelenUniversity of Antwerp, Antwerp, BelgiumN. Van RemortelUniversity of Antwerp, Antwerp, BelgiumA. Van SpilbeeckUniversity of Antwerp, Antwerp, BelgiumF. BlekmanVrije Universiteit Brussel, Brussels, BelgiumS. BlyweertVrije Universiteit Brussel, Brussels, BelgiumJ. D’HondtVrije Universiteit Brussel, Brussels, BelgiumA. KalogeropoulosVrije Universiteit Brussel, Brussels, BelgiumJ. KeaveneyVrije Universiteit Brussel, Brussels, BelgiumM. MaesVrije Universiteit Brussel, Brussels, BelgiumA. OlbrechtsVrije Universiteit Brussel, Brussels, BelgiumS. TavernierVrije Universiteit Brussel, Brussels, BelgiumW. Van DoninckVrije Universiteit Brussel, Brussels, BelgiumP. Van MuldersVrije Universiteit Brussel, Brussels, BelgiumG. P. Van OnsemVrije Universiteit Brussel, Brussels, BelgiumI. VillellaVrije Universiteit Brussel, Brussels, BelgiumB. ClerbauxUniversité Libre de Bruxelles, Brussels, BelgiumG. De LentdeckerUniversité Libre de Bruxelles, Brussels, BelgiumL. FavartUniversité Libre de Bruxelles, Brussels, BelgiumA.P.R. GayT. HreusUniversité Libre de Bruxelles, Brussels, BelgiumA. LéonardUniversité Libre de Bruxelles, Brussels, BelgiumP. E. MarageUniversité Libre de Bruxelles, Brussels, BelgiumA. MohammadiUniversité Libre de Bruxelles, Brussels, BelgiumL. PernièUniversité Libre de Bruxelles, Brussels, BelgiumT. ReisUniversité Libre de Bruxelles, Brussels, BelgiumT. SevaUniversité Libre de Bruxelles, Brussels, BelgiumL. ThomasUniversité Libre de Bruxelles, Brussels, BelgiumC. Vander VeldeUniversité Libre de Bruxelles, Brussels, BelgiumP. VanlaerUniversité Libre de Bruxelles, Brussels, BelgiumJ. WangUniversité Libre de Bruxelles, Brussels, BelgiumV. AdlerGhent University, Ghent, BelgiumK. BeernaertGhent University, Ghent, BelgiumL. BenucciGhent University, Ghent, BelgiumA. CimminoGhent University, Ghent, BelgiumS. CostantiniGhent University, Ghent, BelgiumS. DildickGhent University, Ghent, BelgiumG. GarciaGhent University, Ghent, BelgiumB. KleinGhent University, Ghent, BelgiumJ. LellouchGhent University, Ghent, BelgiumA. MarinovGhent University, Ghent, BelgiumJ. MccartinGhent University, Ghent, BelgiumA.A. Ocampo RiosGhent University, Ghent, BelgiumD. RyckboschGhent University, Ghent, BelgiumM. SigamaniGhent University, Ghent, BelgiumN. StrobbeGhent University, Ghent, BelgiumF. ThyssenGhent University, Ghent, BelgiumM. TytgatGhent University, Ghent, BelgiumS. WalshGhent University, Ghent, BelgiumE. YazganGhent University, Ghent, BelgiumN. ZaganidisGhent University, Ghent, BelgiumS. BasegmezUCLouvain, Louvain-la-Neuve, BelgiumC. BeluffiUCLouvain, Louvain-la-Neuve, Belgium

2013en

ABI

Аннотация

Measurements of two-and four-particle angular correlations for charged particles emitted in pPb collisions are presented over a wide range in pseudorapidity and full azimuth. The data, corresponding to an integrated luminosity of approximately 31 nb -1 , were collected during the 2013 LHC pPb run at a nucleon-nucleon center-of-mass energy of 5.02 TeV by the CMS experiment. The results are compared to 2.76 TeV semi-peripheral PbPb collision data, collected during the 2011 PbPb run, covering a similar range of particle multiplicities. The observed correlations are characterized by the near-side (| | 0) associated pair yields and the azimuthal anisotropy Fourier harmonics (v n ). The second-order (v 2 ) and third-order (v 3 ) anisotropy harmonics are extracted using the two-particle azimuthal correlation technique. A four-particle correlation method is also applied to obtain the value of v 2 and further explore the multi-particle nature of the correlations. Both associated pair yields and anisotropy harmonics are studied as a function of particle multiplicity and transverse momentum. The associated pair yields, the four-particle v 2 , and the v 3 become apparent at about the same multiplicity. A remarkable similarity in the v 3 signal as a function of multiplicity is observed between the pPb and PbPb systems. Predictions based on the color glass condensate and hydrodynamic models are compared to the experimental results.

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Идентификаторы

DOI: 10.1016/j.physletb.2013.06.028

Цитирования и источники

Цитирований: 2Использованных источников: 0

Показатели — AkademScholar