A simple model for NN correlations in quasielastic lepton-nucleus scattering

TL;DR

This paper introduces a covariant extension of the relativistic Fermi gas model that includes correlation effects, enabling better modeling of high-energy quasielastic lepton-nucleus scattering and reproducing experimental asymmetries.

Contribution

It presents a novel covariant model incorporating correlations in nuclei, deriving spectral and superscaling functions for quasielastic processes.

Findings

Model reproduces the asymmetric tail in experimental scaling functions

Incorporates correlation effects into the relativistic Fermi gas framework

Provides a tool for improved analysis of high-energy lepton-nucleus scattering

Abstract

We present a covariant extension of the relativistic Fermi gas model which incorporates correlation effects in nuclei. Within this model, inspired by the BCS descriptions of systems of fermions, we obtain the nuclear spectral function and from it the superscaling function for use in treating high-energy quasielastic electroweak processes. Interestingly, this model has the capability to yield the asymmetric tail seen in the experimental scaling function.