Two-pion correlations in Au+Au collisions at 10.8 GeV/c per nucleon
E877 Collaboration, J. Barrette, R. Bellwied, S. Bennett, R. Bersch, P. Braun-Munzinger, W. C. Chang, W. E. Cleland, J.D. Cole, T. M. Cormier, G. David, J. Dee, O. Dietzsch, M.W. Drigert, S. Gilbert, J. R. Hall, T. K. Hemmick, N. Herrmann, B. Hong, C. L. Jiang, S.C. Johnson, Y. Kwon, R. Lacasse, A. Lukaszew, Q. Li, T. W. Ludlam, S. McCorkle, S. K. Mark, R. Matheus, D. Miskowiec, E. O'Brien, S. Panitkin, T. Piazza, M. Pollack, C. Pruneau, M. N. Rao, M. Rosati, N. C. daSilva, S. Sedykh, U. Sonnadara, J. Stachel, E. M. Takagui, M. Trzaska, S. Voloshin, T. Vongpaseuth, G. Wang, J. P. Wessels, C. L. Woody, N. Xu, Y. Zhang, C. Zou
Abstract
Two-particle correlation functions for positive and negative pions have been measured in Au+Au collisions at 10.8~GeV/c per nucleon. The data were analyzed using one- and three-dimensional correlation functions. From the results of the three-dimensional fit the phase space density of pions was calculated. It is consistent with local thermal equilibrium.