Relativistic analyses of quasielastic neutrino cross sections at MiniBooNE kinematics

Abstract

Two relativistic approaches are considered to evaluate the quasielastic double-differential and integrated neutrino-nucleus cross sections. One, based on the relativistic impulse approximation, relies on the microscopic description of nuclear dynamics using relativistic mean field theory, and incorporates a description of the final-state interactions. The second is based on the superscaling behavior exhibited by electron scattering data and its applicability, due to the universal character of the scaling function, to the analysis of neutrino scattering reactions. The role played by the vector meson-exchange currents in the two-particle two-hole sector is also incorporated and the results obtained are compared with the recent data for neutrinos measured by the MiniBooNE Collaboration.

Nuclear effects in neutrino and antineutrino charged-current quasielastic scattering atMINERνAkinematics

“…Both have been extensively tested against existing QE electron scattering data over a wide energy range. The detailed description of these models can be found in our previous work (see, e.g., [13] and [14]). Here we just summarize their main features and address some improvements with respect to previous work.…”

Estimate of the theoretical uncertainty of the cross sections for nucleon knockout in neutral-current neutrino-oxygen interactions

“…In the SF approach this property is fulfilled by construction. However, in other approaches the inclusion of FSI is found to have non-negligible effects (see, e.g, [38,64,65]). …”

Meson-exchange currents and quasielastic predictions for charged-current neutrino-C12scattering in the superscaling approach

“…II we briefly describe the computation of the MEC considered in this work and show for the first time the corresponding responses of 12 C for several momentum transfers as a function of the QE scaling variable. We also show a new parametrization of these responses and compare it with the one used in [11,28,29]. In Sect.…”

“…As already mentioned, in previous work [11,28,29] a simple parametrization of the exact MEC calculation was used in order to evaluate the MiniBooNE (anti)neutrino cross sections. The present fit of the MEC responses improves the previous one in two respects: it uses data in a wider q range and includes the tail of the responses at high Ψ or ω values.…”