Study of high-energy neutrino neutral-current interactions

A study of strange particles produced in neutrino neutral current interactions in the NOMAD experiment

“…We notice a reasonable agreement between NOMAD and E632 [1] measurements of neutral strange particles production rates. The distributions of the reconstructed z = E V 0 /E had variable for identified K 0 s 's (left plot), Λ's (middle plot) andΛ's (right plot) in NC events are shown in Fig.…”

“…The numbers of neutral strange particles observed in the data with their identification purities are summarized in Table 3. This is a considerable improvement in statistics over the previously published data [1]. Fig.…”

“…A previous study of neutral strange particle production in ν µ NC interactions has been performed by the E632 Collaboration [1] using the Fermilab 15-foot bubble chamber exposed to the Tevatron (anti)neutrino beam with an average energy of E ν(ν) = 150 (110) GeV. The selected V 0 sample in NC events is presented in Table 1, and amounts to 81 events only.…”

“…The selected V 0 sample in NC events is presented in Table 1, and amounts to 81 events only. The z = E V 0 /E had distributions have also been published [1].…”

“…Following our publication [2] the longitudinal Λ polarization was investigated in much detail in a theoretical paper [4] in which agreement was found between the tuned polarized intrinsic model predictions and NOMAD results. It is a natural step to confront the predictions of this model for the longitudinal polarization of Λ hyperons produced in neutrino nucleon neutral current deep inelastic scattering (DIS) with Table 1 The number of reconstructed V 0 events and the corrected V 0 rates (yield per event) in ν µ NC interactions for different cuts on the visible hadronic energy, p vis had , as measured in the E632 experiment (from [1] The NOMAD detector [5] (see Fig. 1) consisted of an active target of 44 drift chambers, with a total fiducial mass of 2.7 tons, located in a 0.4 Tesla dipole magnetic field.…”