Two- and three-pion quantum statistics correlations in Pb-Pb collisions at √sNN=2.76 TeV at the CERN Large Hadron Collider

Abelev, B. and Planinić, Mirko and Poljak, Nikola and Simatović, Goran and Zyzak, M. (ALICE Collaboration) (2014) Two- and three-pion quantum statistics correlations in Pb-Pb collisions at √sNN=2.76 TeV at the CERN Large Hadron Collider. Physical Review C, 89 (2). pp. 24911-19. ISSN 0556-2813

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Abstract

Correlations induced by quantum statistics are sensitive to the spatiotemporal extent as well as dynamics of particle-emitting sources in heavy-ion collisions. In addition, such correlations can be used to search for the presence of a coherent component of pion production. Two- and three-pion correlations of same and mixed charge are measured at low relative momentum to estimate the coherent fraction of charged pions in Pb-Pb collisions at √sNN=2.76 TeV at the CERN Large Hadron Collider with ALICE. The genuine three-pion quantum statistics correlation is found to be suppressed relative to the two-pion correlation based on the assumption of fully chaotic pion emission. The suppression is observed to decrease with triplet momentum. The observed suppression at low triplet momentum may correspond to a coherent fraction in charged-pion emission of 23%±8%.

Item Type: Article
Date: February 2014
Subjects: NATURAL SCIENCES > Physics
Additional Information: Copyright (2014) by the American Physical Society.
Divisions: Faculty of Science > Department of Physics
Publisher: American Physical Society
Depositing User: Gordana Stubičan Ladešić
Date Deposited: 05 Jun 2014 09:16
Last Modified: 23 Sep 2014 19:19
URI: http://digre.pmf.unizg.hr/id/eprint/2230

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