K+ momentum spectrum from (K-,K+) reactions in intranuclear cascade model
Abstract
In a framework of intranuclear cascade (INC) type calculation, we study a momentum spectrum in reactions at a beam momentum of 1.65 GeV/c. INC model calculations are compared with the relativistic impulse approximation (RIA) calculations to perform the detailed study of the reaction mechanism. We find that the INC model can reproduce the experimental data on various targets. Especially, in the low-momentum region, the forward-angle cross sections of the (K-,K+) reaction on from light to heavy targets are consistently explained with the two-step strangeness exchange and production processes with various intermediate mesons, and φ, a0 and f0 productions and their decay into K+K-. In the two-step processes, inclusion of meson and hyperon resonances is found to be essential.
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