Published in:
Physical Review Letters 91,26 (2003) 262302;
Link to original published article:
http://dx.doi.org/10.1103/PhysRevLett.91.262302
Abstract
Pion-kaon correlation functions are constructed from central Au+Au STAR data taken at roots(NN)=130 GeV by the STAR detector at the Relativistic Heavy Ion Collider (RHIC). 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.
Keywords
particles
Date of this Version
January 2003
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