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Long-range two-particle correlations of strange hadrons with charged particles in pPb and PbPb collisions at \{LHC\} energies

Khachatryan, V.; Sirunyan, A.M.; Tumasyan, A.; Adam, W.; Bergauer, T.; Dragicevic, M.; Erö, J.; Fabjan, C.; Friedl, M.; Frühwirth, R.; Ghete, V.M.; Hartl, C.; Hörmann, N.; Hrubec, J.; Jeitler, M.; Kiesenhofer, W.; Knünz, V.; Krammer, M.; Krätschmer, I.; Liko, D.; ... mehr

Measurements of two-particle angular correlations between an identified strange hadron ( KS0 or &#923;/&#923;¯ ) and a charged particle, emitted in pPb collisions, are presented over a wide range in pseudorapidity and full azimuth. The data, corresponding to an integrated luminosity of approximately 35 nb &#8722;1 , were collected at a nucleon&#8211;nucleon center-of-mass energy ( sNN ) of 5.02 TeV with the CMS detector at the LHC. The results are compared to semi-peripheral PbPb collision data at sNN=2.76 TeV , covering similar charged-particle multiplicities in the events. The observed azimuthal correlations at large relative pseudorapidity are used to extract the second-order ( v2 ) and third-order ( v3 ) anisotropy harmonics of KS0 and &#923;/&#923;¯ particles. These quantities are studied as a function of the charged-particle multiplicity in the event and the transverse momentum of the particles. For high-multiplicity pPb events, a clear particle species dependence of v2 and v3 is observed. For pT<2 GeV , the v2 and v3 values of KS0 particles are larger than those of &#923;/&#923;¯ particles at the same pT . ... mehr

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Volltext §
DOI: 10.5445/IR/1000045390
DOI: 10.1016/j.physletb.2015.01.034
Zitationen: 61
Web of Science
Zitationen: 54
Zugehörige Institution(en) am KIT Institut für Experimentelle Kernphysik (IEKP)
Publikationstyp Zeitschriftenaufsatz
Jahr 2015
Sprache Englisch
Identifikator ISSN: 0370-2693
KITopen-ID: 1000045390
Erschienen in Physics Letters B
Band 742
Heft 0
Seiten 200 - 224
Bemerkung zur Veröffentlichung Gefördert durch SCOAP3
Nachgewiesen in Scopus
Web of Science
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