Abstract
Bose-Einstein correlations of identically charged pion pairs were measured by the PHENIX experiment at midrapidity in collisions at . 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 is within 0.8–1.1 for . The centrality dependence of all radii is well described by a linear scaling in , and for is approximately constant at unity as a function of centrality.
- Received 5 January 2004
DOI:https://doi.org/10.1103/PhysRevLett.93.152302
©2004 American Physical Society