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The effect of meson-exchange currents on charged-current quasielastic neutrino scattering with single-nucleon emission is computed and analyzed within the relativistic Fermi gas model. This contribution arises primarily from the…

High Energy Physics - Phenomenology · Physics 2025-11-27 P. R. Casale , J. E. Amaro , V. Belocchi , M. B. Barbaro , Marco Martini

The nuclear response functions for high energy electron scattering were calculated in the wide region of excitation energy. The three typical regions were studied: the quasi-elastic region, the $\Delta$-excitation region and the…

Nuclear Theory · Physics 2009-10-30 Valeriya Gadiyak , Vladimir Dmitriev

Relativistic exchange current corrections to the impulse approximation in low and intermediate energy neutrino--nucleus scattering are presented assuming non--vanishing strange quark form factors for constituent nucleons. Two--body exchange…

Nuclear Theory · Physics 2008-11-26 Y. Umino , J. M. Udias

We present a model that incorporates the effect of two-body currents in quasielastic electron-nucleus scattering within the framework of a consistent superscaling formalism. This is achieved by defining an averaged single-nucleon hadronic…

Nuclear Theory · Physics 2023-10-23 Paloma R. Casale , J. E. Amaro , M. B. Barbaro

We evaluate and discuss the impact of meson-exchange currents (MECs) on charged-current quasielastic neutrino cross sections. We consider the nuclear transverse response arising from two-particle two-hole states excited by the action of…

We present our recent progress in the description of neutrino-nucleus interaction in the GeV region, of interest for ongoing and future oscillation experiments. In particular, we discuss the weak excitation of two-particle-two-hole states…

The effects of meson-exchange currents (MEC) are computed for the one-particle one-hole transverse response function for finite nuclei at high momentum transfers $q$ in the region of the quasielastic peak. A semi-relativistic shell model is…

Nuclear Theory · Physics 2010-04-06 J. E. Amaro , M. B. Barbaro , J. A. Caballero , T. W. Donnelly , C. Maieron , J. M. Udias

The contribution of mesonic exchange currents to nuclear Compton scattering is investigated within the framework of a Fermi gas model of nuclear matter in the non-relativistic limit. The additional interaction between the nucleons is…

Nuclear Theory · Physics 2009-10-28 M. -Th. Huett , A. I. Milstein

After a short review of the recent developments in studies of neutrino-nucleus interactions, the predictions for double-differential and integrated charged current-induced quasielastic cross sections are presented within two different…

Nuclear Theory · Physics 2015-05-30 M. B. Barbaro

We illustrate and discuss the role of meson-exchange currents in quasielastic neutrino-nucleus scattering induced by charged currents, comparing the results with the recent MiniBooNE data for differential and integrated cross sections.

Nuclear Theory · Physics 2011-10-24 M. B. Barbaro , J. E. Amaro , J. A. Caballero , T. W. Donnelly , J. M. Udias , C. F. Williamson

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…

This thesis is dedicated to the study of electron and neutrino scattering on nuclei, with special emphasis on meson-exchange currents (MEC) and short-range correlations (SRC) between nucleon pairs in one-particle emission processes. In…

Nuclear Theory · Physics 2026-01-27 Paloma Rodríguez Casalé

Following recent studies of inclusive electron scattering from nuclei at high energies which focused on two-nucleon emission mediated by meson-exchange currents, in this work the superscaling behavior of such contributions is investigated.…

Nuclear Theory · Physics 2008-11-26 A. De Pace , M. Nardi , W. M. Alberico , T. W. Donnelly , A. Molinari

We evaluate quasielastic double-differential antineutrino cross sections obtained in a phenomenological model based on the superscaling behavior of electron scattering data and estimate the contribution of the vector meson-exchange currents…

Nuclear Theory · Physics 2013-05-30 J. E. Amaro , M. B. Barbaro , J. A. Caballero , T. W. Donnelly

We review some recent progress in the study of electroweak interactions in nuclei within the SuSAv2-MEC model. The model has the capability to predict (anti)neutrino scattering observables on different nuclei. The theoretical predictions…

Relativistic exchange current corrections to neutrino--nucleus cross sections are presented assuming non--vanishing strange quark form factors for the constituent nucleons. For charged current processes the exchange current corrections can…

Nuclear Theory · Physics 2009-10-28 Y. Umino , J. M. Udias , P. J. Mulders

The contributions of short-range nucleon-nucleon (NN) correlations, various meson exchange current (MEC) terms and the influence of $\Delta$ isobar excitations (isobaric currents, IC) on exclusive two-nucleon knockout reactions induced by…

Nuclear Theory · Physics 2008-11-26 D. Knödler , H. Müther , P. Czerski

Two boson exchange (TBE) correction to the cross section for the quasi-elastic charged current $\nu n$ and $\bar{\nu} p$ scattering is evaluated. The TBE is given by $W\gamma$ box diagrams. The calculations are performed for 1 GeV…

High Energy Physics - Phenomenology · Physics 2015-06-17 Krzysztof M. Graczyk

We investigate meson-exchange currents (MEC) in the one-particle emission transverse response of nuclear matter, incorporating short-range correlations via the Bethe-Goldstone equation with a realistic nucleon-nucleon interaction. The…

Nuclear Theory · Physics 2025-10-27 Paloma R. Casale , Jose E. Amaro

The role of meson exchange currents (MEC) in electron- and photon-induced one-nucleon emission processes is studied in a nonrelativistic model including correlations and final state interactions. The nuclear current is the sum of a one-body…

Nuclear Theory · Physics 2009-11-07 C. Giusti , F. D. Pacati
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