Abstract
In 2001, PHENIX measured particle correlations of identical charged pions and kaons at mid-rapidity in Au Au collisions at S N N = 200 GeV. Bertsch-Pratt radius parameters of pion pairs are studied for 9 k T regions from 0.2 to 2.0 GeB/c and for 9 selections of collision centralities. The pion radius parameters are consistent with the result at S N N = 130 GeV, and the ratio R out / R side is below 1 in all 〈 k T 〉 ranges up to 1.2 GeV/c. The radius parameters from charged kaon correlations are compared with those of pions.
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