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Back, B.B.; Wuosmaa, A.H.; Baker, M.D.; Barton, D.S.; Carroll, A.; Chai, Z.; Gushue, S.; Hauer, M.; Heintzelman, G.A.; Holzman, B.; Pak, R.; Remsberg, L.P.; Seals, H.; Sedykh, I.; Stankiewicz, M.A.; Steinberg, P.; Sukhanov, A.; Ballintijn, M.; Busza, W.; Decowski, M.P.
Physical review. C, Nuclear physics, 03/2006, Volume: 73, Issue: 3Journal Article
Two-particle correlations of identical charged pion pairs from Au+Au collisions at {radical}(s{sub NN})=62.4 and 200 GeV were measured by the PHOBOS experiment at BNL Relativistic Heavy Ion Collider (RHIC). Data for the 15% most central events were analyzed with Bertsch-Pratt and Yano-Koonin-Podgoretskii parametrizations using pairs with rapidities of 0.4<y{sub {pi}}{sub {pi}}<1.3 and transverse momenta 0.1<k{sub T}<1.4 GeV/c. The Bertsch-Pratt radii R{sub o} and R{sub l} decrease as a function of pair transverse momentum. R{sub o} and R{sub s} are independent of collision energy, while R{sub l} shows a slight increase. The source rapidity y{sub YKP} scales roughly with the pair rapidity y{sub {pi}}{sub {pi}}, indicating strong dynamical correlations.
