Multiparticle correlations and higher order harmonics in pPbcollisions at√sNN=8.16 TeV

Wang, Quan and Sirunyan, A. M. and Tumasyan, A. R. and Adam, Wolfgang and Ambrogi, Federico and Md. Ali, Mohd. Adli (2019) Multiparticle correlations and higher order harmonics in pPbcollisions at√sNN=8.16 TeV. Nuclear Physics A, 982. pp. 375-378. ISSN 0375-9474

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Abstract

The elliptic and higher-order azimuthal anisotropy Fourier harmonics (v n ) are obtained for pPb collisions at s NN =8.16TeV over a wide range of event multiplicities based on multiparticle correlations. The data were collected by the CMS experiment during the 2016 LHC run. A sample of peripheral PbPb collisions at s NN =5.02TeV covering a similar range of event multiplicities to the pPb results is also analyzed for comparison. The ratios of different harmonic moments are obtained for both v 2 and v 3 with high precision, which allows a direct comparison to theoretical predictions assuming a hydrodynamic evolution of the created medium with initial-state density fluctuations, particularly probing the non-Gaussian nature of initial-state fluctuations in small collision systems. The presented results provide crucial insights into the origin of collective long-range correlations observed in small collision systems.

Item Type:	Article (Journal)
Additional Information:	7861/71934
Uncontrolled Keywords:	CMS, heavy ion, cumulant, flow, collectivity, small system, quark-gluon plasma
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 Kulliyyah of Science > Department of Physics
Depositing User:	Dr Mohd Adli MD Ali
Date Deposited:	02 May 2019 15:03
Last Modified:	12 Jul 2019 10:12
URI:	http://irep.iium.edu.my/id/eprint/71934

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