Light-Front Dynamics and the 3He Spectral Function

TL;DR

This paper introduces a light-front covariant approach to nuclear dynamics and spectral functions, exploring relativistic effects in 3He and addressing final state interactions in semi-inclusive deep inelastic scattering.

Contribution

It presents a novel light-front Hamiltonian framework for nuclear spectral functions and discusses their normalization, momentum sum rule, and applications to the EMC effect and scattering processes.

Findings

Preliminary analysis of relativity's role in the EMC effect in 3He.

Development of a covariant spectral function satisfying sum rules.

Outline of extending non-relativistic FSI analysis within light-front dynamics.

Abstract

Two topics are presented. The first one is a novel approach for a Poincare' covariant description of nuclear dynamics based on light-front Hamiltonian dynamics. The key quantity is the light-front spectral function, where both normalization and momentum sum rule can be satisfied at the same time. Preliminary results are discussed for an initial analysis of the role of relativity in the EMC effect in 3He. A second issue, very challenging, is considered in a non-relativistic framework, namely a distorted spin-dependent spectral function for 3He in order to take care of the final state interaction between the observed pion and the remnant in semi-inclusive deep inelastic electron scattering off polarized 3He. The generalization of the analysis within the light-front dynamics is outlined.