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arXiv · 1706.08887

Nuclear dependence of the 2p2h electroweak response in the Relativistic Fermi Gas model

M. B. Barbaro·J. E. Amaro·J. A. Caballero·A. De Pace·T. W. Donnelly·G. D. Megias·I. Ruiz Simo
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Abstract

We present the results of a recent study of meson-exchange two-body currents in lepton-nucleus inclusive scattering at various kinematics and for different nuclei within the Relativistic Fermi Gas model. We show that the associated nuclear response functions at their peaks scale as $A k_F^2$, for Fermi momentum $k_F$ going from 200 to 300 MeV/c and momentum transfer $q$ from $2k_F$ to 2 GeV/c. This behavior is different from what is found for the quasielastic response, which scales as $A/k_F$. This result can be valuable in the analyses of long-baseline neutrino oscillation experiments, which need to implement these nuclear effects in Monte Carlo simulations for different kinematics and nuclear targets.

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M. B. Barbaro, J. E. Amaro, J. A. Caballero, A. De Pace, T. W. Donnelly, G. D. Megias, I. Ruiz Simo. 2017-06-27. Nuclear dependence of the 2p2h electroweak response in the Relativistic Fermi Gas model. https://arxiv.org/abs/1706.08887

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