Parity nonconserving cold neutron-parahydrogen interactions

TL;DR

This paper calculates three parity nonconserving observables in cold neutron-parahydrogen interactions, incorporating strong and weak interaction models to provide theoretical predictions relevant for understanding fundamental symmetries.

Contribution

It introduces a detailed theoretical calculation of parity nonconserving effects in neutron-parahydrogen interactions using the Reid93 potential and DDH model with two-pion exchange.

Findings

Predicted neutron spin rotation angles

Estimated neutron polarization effects

Calculated photon asymmetry in radiative capture

Abstract

Three pion dominated observables of the parity nonconserving interactions between the cold neutrons and parahydrogen are calculated. The transversely polarized neutron spin rotation, unpolarized neutron longitudinal polarization, and photon-asymmetry of the radiative polarized neutron capture are considered. For the numerical evaluation of the observables, the strong interactions are taken into account by the Reid93 potential and the parity nonconserving interactions by the DDH model along with the two-pion exchange.