H. Gulkanyan

THE A-DEPENDENCE OF K 0 AND Λ NEUTRINOPRODUCTION ON NUCLEI

AbstractThe A dependence of the production of K0 and Λ is investigated for the first time in neutrino-nuclear reactions using the data obtained with the SKAT bubble chamber. An exponential parametrization (∼Aβ) of the particle yields results in

A study of the nuclear-medium influence on ρ0 neutrinoproduction

\beta _{V^0 }

Investigation of quasielastic muon-neutrino scattering on nuclei at E v < 1 GeV

= 0.20 ± 0.05 for V0 particles (K0 and Λ), while for π− mesons the A dependence is much weaker (

The total yields of K^+(892), Sigma^+(1385) and Sigma^0 in neutrino-induced reactions at = 10 GeV

\beta _{\pi ^ - }

The total yields of K*(892){sup +}, {sup +}(1385), and ° in neutrino-induced reactions at 10 GeV

= 0.068 ± 0.007). A nuclear enhancement of the ratio K0/π− is found; this ratio increases from 0.055 ± 0.013 for vN interactions up to 0.070 ± 0.011 at A ≈ 21 and 0.099 ± 0.011 at A ≈ 45. It is observed that the multiplicity rise of V0 occurs predominantly in the backward hemisphere of the hadronic system. It is shown that the A dependence of the Λ0 and π− yields can be reproduced in the framework of a model incorporating the secondary intranuclear interactions of pions originating from the primary vN interactions.

The LUCIAE model predictions on the light vector meson production in proton-proton, proton-nucleus and nucleus-nucleus collisions at 158 A GeV

Using the data obtained with the SKAT bubble chamber, the total yields of K*(892)+, Σ+(1385), and Σ0 are estimated for the first time in neutrino-induced reactions at moderate energy 〈Ev〉 = 10.4 GeV. It is shown that the recently observed enhancement of the K0 and Λ yields in vA interactions as compared to vN interactions is contributed only slightly by the K*(892)+ and Σ+(1385) production. The contribution of resonances to the K0 and Λ yields is found to be in qualitative agreement with higher energy (〈Ev〉 ≳ 40 GeV) data. It is shown that the energy dependence of the K*(892)+ mean multiplicity in vN interactions is approximately linear in the range of 〈Ev〉 ≈ 10−60 GeV, while that for Σ0 in vA interactions (A = 20−21) is approximately logarithmic in the range of 〈Ev〉 ≈ = 10−150 GeV.