A study of the nuclear-medium influence on neutral-strange-particle production in deep-inelastic neutrino scattering

摘要

The influence of nuclear effects oil the production of neutral strange particles (V-o)is investigated using the data obtained with SKAT propane-freon bubble chamber irradiated in the neutrino beam (with E-nu = 3-30 GeV) at the Serpukhov accelerator. The mean multiplicity of V-o particles in nuclear interactions, (n(v)o)(A) = 0,092 +/- 0.010 is found to exceed significantly that in "quasideuteron" interactions, (n(V)o)(D) = 0.063 +/- 0.013. The ratio of rho(V)o = [n(V)o](A)/[n(V)o](D) = 1.46 +/- 0.23 is larger than that for pi(-) mesons, rho(pi-) = 1.10 +/- 0.03. It is shown that the multiplicity gain of V-o particles can be explained by intranuclear interactions of produced pions.