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The W and Q dependence of the transverse momentum of the forward-going hadrons in deep inelastic neutrino charged current interactions on neon is studied. The data were obtained by exposing BEBC filled with a Ne/H mixture to the CERN SPS wide-band neutrino beam. The data on average transverse momentum are compared to a model which includes first order QCD, intrinsic quark momentum in the nucleon and Fermi motion, as well as a simple model for hadronization. The model is found to describe the data well. Values of α=0.16±0.02(stat)±0.02(syst.)±0.03(frag.) at an average Q of 15.4±0.4 GeV/c and $$\Lambda _{\overline {MS} } = 216_{ - 99}^{ + 113} $$ (stat.) (syst.), (frag.) MeV/v for three flavours are extracted. [ABSTRACT FROM AUTHOR]

The coherent production of 3π systems by charged current antineutrino interactions on neon nuclei is studied in the bubble chamber BEBC exposed to the CERN SPS wide band beam. The coherent signal is attributed mainly to (ρπ) production, where the (ρπ) system is either non-resonant or comes from the decay of a mesons. The kinematical variables and the total cross section are compared with the predictions of the meson dominance model. [ABSTRACT FROM AUTHOR]

The production of the meson resonances ϱ(770) (all three charge states), η(550), ω(783) and f(1270) in $$\bar v$$ Ne and ν Ne charged current interactions is investigated in a bubble chamber experiment with BEBC at CERN. Except for the f, the main features of resonance production are reasonably well described by the Lund model, although the average resonance multiplicities are overestimated by the model by (67±30)%. The average multiplicities of all resonances, including the f, are well reproduced by a semiempirical model, whose parameters were determined from hadron interaction data. [ABSTRACT FROM AUTHOR]

Backward proton and pion production is studied in ν and $$\bar v$$ charged current interactions in neon. The results are compared with other experiments and theory. The complete backward proton data is compatible with protons produced by reinteractions in the nucleus. However in events with only one proton, muon variables appear correlated to those for the backward proton, as expected by the two-nucleon correlation model. [ABSTRACT FROM AUTHOR]

The coherent production of π mesons by charged current neutrino interactions on neon nuclei in BEBC is compared to the predictions of the PCAC hypothesis and the meson dominance model. Good agreement is observed. [ABSTRACT FROM AUTHOR]