Abstract

Strange particles are sensitive probes of hot and dense nuclear matter formed in the relativistic nucleus - nucleus collisions. In our experimental studies performed at SIS18 (GSI Darmstadt) with the FOPI spectrometer, we have measured the ϕ(1020) meson production in Al+Al collisions at 2A GeV. The production of ϕ(1020) mesons, almost half of them decaying via the K+K−channel, obviously affects the rate of kaon production. In order to quantify the contribution of ϕ mesons decays to the observed K−mesons yield, the ϕ meson production probability was estimated.

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