Energy Distribution ofKMesons Produced in Nuclei

$K$ mesons produced by internal target bombardment at the Brookhaven Cosmotron and Berkeley Bevatron are assumed to be made by the reaction: $p+N\to Y+N+K$, where $N=\mathrm{nucleon}$, $Y=\mathrm{hyperon}$. The expected energy distribution of the $K$ particles is calculated for several laboratory angles at proton bombarding energies of 2.9 Bev and 4.8 Bev, assuming various angular and energy distributions of the $K$ mesons in the center-of-mass system of the incoming proton and target nucleon. The internal motions of the target nucleons were taken into account by using both the Gaussian and the Fermi momentum distributions.