2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/41675We determine new constraints on the products of two R-parity violating coupling constants from the NOMAD and CHORUS experiments on nu_mu --> nu_tau oscillations. We obtain improved results from (a) lepton flavour violating (LFV) meson decays, (b) LFV deep-inelastic scattering and (c) a combination of the two.15 pages, 1 figureHigh Energy Physics - Phenomenologytext