Multipion Bose-Einstein correlations in <i>pp</i>, <i>p</i>-Pb, and Pb-Pb collisions at energies available at the CERN Large Hadron Collider



Adam, J, Adamova, D, Aggarwal, MM, Rinella, G Aglieri, Agnello, M, Agrawal, N, Ahammed, Z, Ahmad, S, Ahn, SU, Aiola, S
et al (show 982 more authors) (2016) Multipion Bose-Einstein correlations in <i>pp</i>, <i>p</i>-Pb, and Pb-Pb collisions at energies available at the CERN Large Hadron Collider. PHYSICAL REVIEW C, 93 (5). 054908-.

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Abstract

Three- and four-pion Bose-Einstein correlations are presented in pp,p-Pb, and Pb-Pb collisions at the LHC. We compare our measured four-pion correlations to the expectation derived from two- and three-pion measurements. Such a comparison provides a method to search for coherent pion emission. We also present mixed-charge correlations in order to demonstrate the effectiveness of several analysis procedures such as Coulomb corrections. Same-charge four-pion correlations in pp and p-Pb appear consistent with the expectations from three-pion measurements. However, the presence of non-negligible background correlations in both systems prevent a conclusive statement. In Pb-Pb collisions, we observe a significant suppression of three- and four-pion Bose-Einstein correlations compared to expectations from two-pion measurements. There appears to be no centrality dependence of the suppression within the 0%-50% centrality interval. The origin of the suppression is not clear. However, by postulating either coherent pion emission or large multibody Coulomb effects, the suppression may be explained.

Item Type: Article
Depositing User: Symplectic Admin
Date Deposited: 13 Jul 2016 11:36
Last Modified: 14 Mar 2024 21:13
DOI: 10.1103/PhysRevC.93.054908
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URI: https://livrepository.liverpool.ac.uk/id/eprint/3002291

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