PHENIX Results of Three-Particle Bose-Einstein Correlations in \({\sqrt{s_{NN}}}\) = 200 GeV Au+Au Collisions

• Main Author: Tamás Novák
• Format: Article
• Language: English
• Published: MDPI AG 2018-03-01
• Series: Universe
• Subjects: RHIC; PHENIX; Bose-Einstein correlations; Lévy distribution; thermalization; coherence
• Online Access: http://www.mdpi.com/2218-1997/4/3/57

Bose-Einstein correlations (BECs) of identical hadrons reveal information about hadron creation from the strongly interacting matter formed in ultrarelativistic heavy-ion collisions. The measurement of three-particle correlations may in particular shed light on hadron creation mechanisms beyond thermal/chaotic emission. In this paper, we show the status of PHENIX measurements of three-pion correlations as a function of momentum differences within the triplets. We analyze the shape of the correlation functions through the assumption of Lévy sources and a proper treatment of the Coulomb interaction within the triplets. We measure the three-particle correlation strength ( λ 3 ), which, together with the two-particle correlation strength λ 2 , encodes information about hadron creation mechanisms. From a consistent analysis of two- and three-particle correlation strengths, we establish a new experimental measure of thermalization and coherence in the source.