On the flow of kaons produced in relativistic heavy ion collisions

Details On the flow of kaons produced in relativistic heavy ion collisions On the flow of kaons produced in relativistic heavy ion collisions

1998-05-07

arxiv.org/abs/nucl-th/9805017v2

Nucl.Phys.A650:358-368,1999

Physics

Nuclear Physics

Nuclear Theory

11 pages, 10 figures, submitted to NPA

Scientific paper

10.1016/S0375-9474(99)00122-0

We investigate the different contributions to the in-plane flow of K+ mesons observed recently by the FOPI collaboration in the reaction Ni(1.93 AGeV)+Ni. Due to the kinematics of the three body phase space decay the flow of kaons produced in baryon-baryon interactions is smaller than that of the baryons in the entrance channel. On the contrary, in pi N interactions the flow of the sources and of the kaons are identical. Therefore the total kaon flow depends on the relative number of Delta N -> K+ and pi N -> K+ reactions and hence on the lifetime of the Delta, in addition to the already known dependence on the potential interaction interaction of the kaons with the nuclear environment.

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