A calculation of the two-particle two-hole contribution to the semi-inclusive (nu_mu,mu N) cross section on carbon is performed in the framework of the relativistic Fermi gas model. The process is driven by meson-exchange currents encompassing all contributions involving the exchange of a single pion and the excitation of a Δ resonance. The calculation is validated against the inclusive (nu_mu,mu) response functions already existing in the literature, and then extended for the first time to the semi-inclusive channel. Results are presented both at fixed neutrino energy and folded with the T2K neutrino flux.
Two-particle two-hole excitations in semi-inclusive neutrino-nucleus scattering
Belocchi, V.;Barbaro, M. B.;Martini, M.
2025-01-01
Abstract
A calculation of the two-particle two-hole contribution to the semi-inclusive (nu_mu,mu N) cross section on carbon is performed in the framework of the relativistic Fermi gas model. The process is driven by meson-exchange currents encompassing all contributions involving the exchange of a single pion and the excitation of a Δ resonance. The calculation is validated against the inclusive (nu_mu,mu) response functions already existing in the literature, and then extended for the first time to the semi-inclusive channel. Results are presented both at fixed neutrino energy and folded with the T2K neutrino flux.
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