Final state interactions in the nuclear response at large momentum transfer

TL;DR

This paper derives a convolution approach for nuclear response at high momentum transfer, linking final state interactions to spectral functions and analyzing the impact of nucleon-nucleon correlations.

Contribution

It introduces a derivation of the convolution approach from the ladder approximation, connecting the folding function to spectral functions and highlighting nucleon-nucleon correlation effects.

Findings

Folding function related to spectral function

Nucleon-nucleon correlations influence energy dependence

Convolution approach derived from ladder approximation

Abstract

The convolution approach, widely employed to describe final state interactions in the response of many-body systems, is derived from the expression of the nuclear response in the zeroth-order ladder approximation. Within this framework, the folding function, accounting for the effects of interactions between the struck particle and the spectator system, can be immediately related to the spectral function of particle states.The role of nucleon-nucleon correlations in determining the energy dependence is analyzed.