Zh. Karamyan

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

The yields of light meson resonances in neutrino-nucleus interactions at 〈 E ν 〉≈ 10 GeV

\beta _{V^0 }

Charged ρ-meson production in neutrino-induced reactions at ≈ 10 GeV

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

A study of the neutrino production of φ and D s + mesons

\beta _{\pi ^ - }

The total yields of K*(892){sup +}, {sigma}{sup +}(1385), and {sigma}{sup 0} in neutrino-induced reactions at {approx} 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 total yields of K*(892)+, Σ+(1385), and Σ0 in neutrino-induced reactions at 〈E v〉 ≈ 10 GeV

The inclusive spectra of hadrons are measured with the aid of the SKAT propane-freon bubble chamber irradiated with a beam of 3-to 30-GeV neutrinos from the Serpukhov accelerator. The resulting data indicate that the intranuclear absorption of leading quark-fragmentation products is enhanced as the energy transfer to the quark involved decreases or as the quark-energy fraction z acquired by the product hadron increases. An analysis of the data on the basis of the color-string model reveals that the cross section for the intranuclear absorption of positively charged hadrons that are characterized by z values in the range between 0.7 and 0.9 is close to the inelastic cross section for pion-nucleon interaction.