Multiparticle correlation studies in pPb collisions at sNN =8.16 TeV

Choudhury, S. and Komaragiri, J.R. and Tiwari, P.C. Multiparticle correlation studies in pPb collisions at sNN =8.16 TeV. In: Physical Review C, 101 (1).

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Abstract

The second- and third-order azimuthal anisotropy Fourier harmonics of charged particles produced in pPb collisions, at sNN=8.16TeV, are studied over a wide range of event multiplicities. Multiparticle correlations are used to isolate global properties stemming from the collision overlap geometry. The second-order "elliptic" harmonic moment is obtained with high precision through four-, six-, and eight-particle correlations and, for the first time, the third-order "triangular" harmonic moment is studied using four-particle correlations. A sample of peripheral PbPb collisions at sNN=5.02TeV that covers a similar range of event multiplicities as the pPb results is also analyzed. Model calculations of initial-state fluctuations in pPb and PbPb collisions can be directly compared to the high-precision experimental results. This work provides new insight into the fluctuation-driven origin of the v3 coefficients in pPb and PbPb collisions, and into the dominating overall collision geometry in PbPb collisions at the earliest stages of heavy ion interactions. © 2020 CERN , for the CMS Collaboration. Published by the American Physical Society.

Item Type:	Journal Article
Publication:	Physical Review C
Publisher:	American Physical Society
Additional Information:	The copyrights for this article belongs to authors.
Department/Centre:	Division of Physical & Mathematical Sciences > Centre for High Energy Physics
Date Deposited:	26 Dec 2024 10:27
Last Modified:	26 Dec 2024 10:27
URI:	http://eprints.iisc.ac.in/id/eprint/64588

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