Elliptic emission of K+ and π+ in 158 A·GeV Pb + Pb collisions
1999
Abstract An event-by-event analysis of the azimuthal angular correlation with respect to the reaction plane has been carried out for K + and π + emission near mid-rapidity in 158 A ·GeV Pb + Pb collisions. In semi-central collisions, K + mesons are found to be preferentially emitted out of the reaction plane, while π + mesons are emitted in the reaction plane. The results suggest that the kaon emission is influenced by in-medium potential effects in addition to collective flow effects.
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