Charged rho meson production in neutrino-induced reactions at Eₙu = 10 GeV

Original · EN

The neutrinoproduction of charged ρ mesons on nuclei and nucleons is investigated for the first time at moderate energies (<Eν> ≈ 10 GeV), using the date obtained with SKAT bubble chamber. No strong nuclear effects are observed in ρ+ and ρ- production. The fractions of charged and neutral pions originating from ρ decays are obtained and compared with higher energy data. From analysis of the obtained and available data on ρ+ and K*⁺(892) neutrinoproduction, the strangeness suppression factor in the quark string fragmentation is extracted: λₛ = 0.18±0.03. Estimations are obtained for cross sections of quasiexclusive single ρ+ and coherent ρ+ neutrinoproduction on nuclei. The estimated coherent cross section σᵨ₊coh = (0.29±0.16)· 10⁻³⁸ cm² is compatible with theoretical predictions.