Investigation of interaction of circularly and linearly polarized photon beams with polarized 3He target

TL;DR

This paper investigates how polarized photon beams interact with polarized 3He targets, using advanced three-nucleon equations to predict observables sensitive to nuclear forces and currents, providing a benchmark for theoretical models.

Contribution

It introduces a detailed theoretical analysis of 3He photodisintegration with polarized photons, incorporating realistic nuclear potentials and currents, and identifies key observables for experimental testing.

Findings

Identified promising observables for experimental measurement.

Analyzed sensitivity of observables to nuclear currents and forces.

Discussed configurations for three-body photodisintegration experiments.

Abstract

Photodisintegration of polarized 3He by linearly or circularily polarized photons offers a rich choice of observables which can be calculated with high precision using a rigorous scheme of three-nucleon Faddeev equations. Using the (semi)phenomenological AV18 nucleon-nucleon potential combined with the Urbana IX three-nucleon force we investigate sensitivity of 3He photodisintegration observables to underlying currents taken in the form of a single-nucleon current supplemented by two-body contributions for $\pi$- and $\rho$-meson exchanges or incorporated by the Siegert theorem. Promising observables to be measured for two- and three-body fragmentation of 3He are identified. These observables form a challenging test ground for consistent forces and currents being under derivation within the framework of chiral perturbation theory. For thre-body 3He photodisintegration several kinematicaly complete configurations, including SST and FSI, are also discussed.