Campus Units

Physics and Astronomy

Document Type

Article

Publication Version

Published Version

Publication Date

10-2004

Journal or Book Title

Physical Review Letters

Volume

93

Issue

15

First Page

152302

DOI

10.1103/PhysRevLett.93.152302

Abstract

Bose-Einstein correlations of identically charged pion pairs were measured by the PHENIX experiment at midrapidity in Au+Au collisions at roots(NN)=200 GeV. The Bertsch-Pratt radius parameters were determined as a function of the transverse momentum of the pair and as a function of the centrality of the collision. Using the standard core-halo partial Coulomb fits, and a new parametrization which constrains the Coulomb fraction as determined from the unlike-sign pion correlation, the ratio R-out/R-side is within 0.8-1.1 for 0.25 < < k(T) > < 1.2 GeV/c. The centrality dependence of all radii is well described by a linear scaling in N-part(1/3), and R-out/R-side for < k(T) > similar to 0.45 GeV/c is approximately constant at unity as a function of centrality.

Comments

This article is published as Adler, S. S., S. Afanasiev, C. Aidala, N. N. Ajitanand, Y. Akiba, J. Alexander, R. Amirikas et al. "Bose-Einstein Correlations of Charged Pion Pairs in A u+ A u Collisions at s N N= 200 G e V." Physical review letters 93, no. 15 (2004): 152302. DOI:10.1103/PhysRevLett.93.152302. Posted with permission.

Copyright Owner

American Physical Society

Language

en

File Format

application/pdf

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