2011/01/15 by N. M. Agababyan, Agababyan, N. M., N. Grigoryan +9
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions
paper · pdf · doi:10.48550/arxiv.1101.2950
openalex publication_date 2011/01/15 · openalex created_date 2022/08/29 · openalex updated_date 2026/07/28
For the first time, the nuclear effects in the reaction νp -> μ- p π+ on bound protons are investigated at Eν= 9 GeV and the effective atomicweight A = 21 of the composite nuclear target using the data obtained with SKAT bubble chamber. The observed nuclear effects are explained by the Fermi-motion of the target proton and secondary elastic scattering of neutrinoproduced hadrons on intranuclear neutrons. The probability of any intranuclear interaction of neutrinoproduced hadrons is extracted: Pint = 0.40+-0.13, while the probability of interactions occurring only via elastic scattering on intranuclear neutrons is estimated to be Pc = 0.14+-0.05. A clear evidence of the Δ++(1232) and an indication on the Δ++(1620) isobar states production are observed with the mean yields, respectively, 0.57+-0.09 and 0.40+-0.26 (the latter being corrected for the p π+ decay fraction). The mean yield of Δ++(1232) is by 1.61+-0.25 times smaller than expected for the reaction on the hydrogen target, thus indicating on its rather strong nuclear absorption.