M. V. Ivanov

Charged-current inclusive neutrino cross sections in the SuperScaling model including quasielastic, pion production and meson-exchange contributions

Charged current inclusive neutrino-nucleus cross sections are evaluated using the superscaling model for quasielastic scattering and its extension to the pion production region. The contribution of two-particle-two-hole vector meson-exchange current excitations is also considered within a fully relativistic model tested against electron scattering data. The results are compared with the inclusive neutrino-nucleus data from the T2K and SciBooNE experiments. For experiments where

Nuclear effects in neutrino and antineutrino charged-current quasielastic scattering at MINERνA kinematics

\langle E_\nu \rangle \sim 0.8

Neutral current (anti)neutrino scattering: relativistic mean field and superscaling predictions

GeV, the three mechanisms considered in this work provide good agreement with the data. However, when the neutrino energy is larger, effects from beyond the

Off-shell effects in the relativistic mean field model and their role in CC (anti)neutrino scattering at MiniBooNE kinematics

\Delta

Superscaling predictions for neutrino-induced charged-current charged pion production at MiniBooNE

also appear to be playing a role. The results show that processes induced by two-body currents play a minor role at the kinematics considered.

Relativistic description of final-state interactions in neutral-current neutrino and antineutrino cross sections

We compare the charged-current quasielastic neutrino and antineutrino observables obtained in two different nuclear models, the phenomenological SuperScaling Approximation and the relativistic mean field approach, with the recent data published by the MINER nu A Collaboration. Both models provide a good description of the data without the need of an ad hoc increase in the mass parameter in the axial-vector dipole form factor. Comparisons are also made with the MiniBooNE results, where different conclusions are reached.

Charged-current inclusive neutrino cross sections in the SuperScaling model

Abstract We evaluate the neutral current quasi-elastic neutrino cross section within two nuclear models: the SuSA model, based on the superscaling behavior of electron scattering data, and the RMF model, based on relativistic mean field theory. We also estimate the ratio ( ν p → ν p ) / ( ν N → ν N ) and compare with the MiniBooNE experimental data, performing a fit of the parameters M A and g A ( s ) within the two models. Finally, we present our predictions for antineutrino scattering.

Charged-current quasielastic neutrino scattering cross sections on 12 C with realistic spectral and scaling functions

Abstract The relativistic mean field (RMF) model is used to describe nucleons in the nucleus and thereby to evaluate the effects of having dynamically off-shell spinors. Compared with free, on-shell nucleons as employed in some other models, within the RMF nucleons are described by relativistic spinors with strongly enhanced lower components. In this work it is seen that for MiniBooNE kinematics, neutrino charged-current quasielastic cross sections show some sensitivity to these off-shell effects, while for the antineutrino-nucleus case the total cross sections are seen to be essentially independent of the enhancement of the lower components. As was found to be the case when comparing the RMF results with the neutrino-nucleus data, the present impulse approximation predictions within the RMF also fall short of the MiniBooNE antineutrino-nucleus data.

Erratum: Nuclear effects in neutrino and antineutrino charged-current quasielastic scattering atMINERνAkinematics [Phys. Rev. D89, 093002 (2014)]

Abstract Superscaling approximation (SuSA) predictions to neutrino-induced charged-current charged pion production in the Δ-resonance region are explored under MiniBooNE experimental conditions. The results obtained within SuSA for the flux-averaged double-differential cross sections of the π + production for the ν μ + CH 2 reaction as a function of the muon kinetic energy and of the scattering angle, the cross sections averaged over the angle, the total cross section for the π + production, as well as CC 1 π + to CCQE cross section ratio are compared with the corresponding MiniBooNE experimental data. The SuSA predictions are in good agreement with data on neutrino flux average cross sections, but a somewhat different dependence on the neutrino energy is predicted than the one resulting from the experimental analysis.

Global relativistic folding optical potential and the relativistic Green's function model

We evaluate semi-inclusive neutral-current quasielastic differential neutrino and antineutrino cross sections within the framework of the relativistic impulse approximation. The results of the relativistic mean field and of the relativistic Green’s function models are compared. The sensitivity to the strange-quark content of the nucleon form factor is also discussed. The results of the models are compared with the MiniBooNE experimental data for neutrino scattering. Numerical predictions for flux-averaged antineutrino scattering cross sections are also presented.