Pseudorapidity dependence of long-range two-particle correlations in pPb collisions at s NN =5.02 TeV

Khachatryan, Vardan and Sirunyan, A. M. and Tumasyan, A. R. and Adam, Wolfgang and Asilar, Ece and Md. Ali, Mohd. Adli (2017) Pseudorapidity dependence of long-range two-particle correlations in pPb collisions at s NN =5.02 TeV. Physical Review C, 96 (1). 014915-1-014915-21. ISSN 2469-9985 E-ISSN 2469-9993

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Abstract

Two-particle correlations in pPb collisions at a nucleon-nucleon center-of-mass energy of 5.02 TeV are studied as a function of the pseudorapidity separation (η) of the particle pair at small relative azimuthal angle (|φ| < π/3). The correlations are decomposed into a jet component that dominates the short-range correlations (|η| < 1), and a component that persists at large η and may originate from collective behavior of the produced system. The events are classified in terms of the multiplicity of the produced particles. Finite azimuthal anisotropies are observed in high-multiplicity events. The second and third Fourier components of the particle-pair azimuthal correlations, V2 and V3, are extracted after subtraction of the jet component. The single-particle anisotropy parameters v2 and v3 are normalized by their laboratory frame midrapidity value and are studied as a function of ηc.m.. The normalized v2 distribution is found to be asymmetric about ηc.m. = 0, with smaller values observed at forward pseudorapidity, corresponding to the direction of the proton beam, while no significant pseudorapidity dependence is observed for the normalized v3 distribution within the statistical uncertainties.

Item Type:	Article (Journal)
Additional Information:	7861/63047
Uncontrolled Keywords:	Pseudorapidity; two-particle correlations; pPb collisions; NN =5.02 TeV
Subjects:	Q Science > Q Science (General) Q Science > QC Physics
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Science
Depositing User:	Engku Norulizati Engku Aziz
Date Deposited:	07 May 2018 10:20
Last Modified:	07 May 2018 10:20
URI:	http://irep.iium.edu.my/id/eprint/63047

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