Meson-exchange currents and superscaling analysis with relativistic effective mass of quasielastic electron scattering from ${}^{12}$C

Abstract

We reanalyze the scaling properties of inclusive quasielastic electron scattering from ${}^{12}$C by subtracting from the data the effects of two-particle emission. A model of relativistic meson-exchange currents (MEC) is employed within the mean field theory of nuclear matter, with scalar and vector potentials that induce an effective mass and a vector energy to the nucleons. A new phenomenological quasielastic scaling function is extracted from a selection of the data after the subtraction of the 2p-2h contribution. The resulting superscaling approach with relativistic effective mass (SuSAM*) can be used to compute the genuine quasielastic cross section without contamination of the 2p-2h channel that can then be added separately to obtain the total quasielastic plus two-nucleon emission response.

13 pages, 9 figures

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Cited by in corpus (2)

• Meson-exchange currents in quasielastic electron scattering in a generalized superscaling approach
• Exploring semi-inclusive two-nucleon emission in neutrino scattering: a factorized approximation approach