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 electromagnetic, purely isovector meson-exchange currents in a fully relativistic framework based on the work by the Torino Collaboration [A. D. Pace, M. Nardi, W. M. Alberico, T. W. Donnelly, and A. Molinari, Nucl. Phys. A726, 303 (2003)]. An accurate parametrization of this MEC response as a function of the momentum and energy transfers involved is presented. Results of neutrino-nucleus cross sections using this MEC parametrization together with a recent scaling approach for the one-particle one-hole contributions (named SuSAv2) are compared with experimental data (MiniBooNE, MINERvA, NOMAD and T2K Collaborations).

Meson-exchange currents and quasielastic predictions for charged-current neutrino-C 12 scattering in the superscaling approach

BARBARO, Maria Benedetta;ALBERICO, Wanda Maria;
2015

Abstract

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 electromagnetic, purely isovector meson-exchange currents in a fully relativistic framework based on the work by the Torino Collaboration [A. D. Pace, M. Nardi, W. M. Alberico, T. W. Donnelly, and A. Molinari, Nucl. Phys. A726, 303 (2003)]. An accurate parametrization of this MEC response as a function of the momentum and energy transfers involved is presented. Results of neutrino-nucleus cross sections using this MEC parametrization together with a recent scaling approach for the one-particle one-hole contributions (named SuSAv2) are compared with experimental data (MiniBooNE, MINERvA, NOMAD and T2K Collaborations).
91
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0703004
0703019
http://harvest.aps.org/bagit/articles/10.1103/PhysRevD.91.073004/apsxml
https://arxiv.org/abs/1412.1822
Nuclear and High Energy Physics
Megias, G.D.; Donnelly, T.W.; Moreno, O.; Williamson, C.F.; Caballero, J.A.; González-Jiménez, R.; De Pace, A.; Barbaro, M.B.; Alberico, W.M.; Nardi, M.; Amaro, J.E.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2318/1532908
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