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arXiv · 2602.02231

Impact of Two-Body Currents on Semi-Exclusive Lepton-Nucleus Reactions

N. Rocco·N. Steinberg
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Abstract

We generalize the spectral-function formalism to describe two-nucleon knockout processes in exclusive kinematics. Significant improvements are introduced both in the treatment of the current operators entering the $\Delta$-current contribution and in the modeling of correlations between the two struck nucleons, including a consistent treatment of isospin dependence and the explicit incorporation of angular correlations. The framework is validated through comparisons with relativistic Fermi-gas calculations and with semi-exclusive electron-nucleus scattering data. Our results demonstrate that an accurate description of nuclear dynamics plays a crucial role in modeling this reaction mechanism. We further present a study of selected electroweak observables relevant to neutrino-scattering experiments.

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N. Rocco, N. Steinberg. 2026-02-02. Impact of Two-Body Currents on Semi-Exclusive Lepton-Nucleus Reactions. https://arxiv.org/abs/2602.02231

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