Pion-Kaon correlations in central Au+Au collisions at sNN = 130 GeV
Abstract
Pion-kaon correlation functions are constructed from central Au+Au data taken at sNN = 130 GeV. The results suggest that pions and kaons are not emitted at the same average space-time point. Space-momentum correlations, i.e. transverse flow, lead to a space-time emission asymmetry of pions and kaons that is consistent with the data. This result provides new independent evidence that the system created at RHIC undergoes a collective transverse expansion.
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