Neutron Beta-Decay as Laboratory for Test of Standard Model

TL;DR

This paper investigates how neutron beta-decay measurements can detect tiny deviations from the Standard Model, focusing on asymmetries, energy distributions, and neutron lifetime with polarized neutrons.

Contribution

It provides a comprehensive analysis of the sensitivity of neutron decay observables to new physics interactions beyond the Standard Model.

Findings

Identifies measurable asymmetries sensitive to beyond Standard Model interactions.

Quantifies the experimental precision needed to detect new physics contributions.

Highlights the potential of neutron decay experiments as probes for new fundamental interactions.

Abstract

We analyse the sensitivity of all experimentally observable asymmetries and energy distributions for the neutron beta-decay with a polarised neutron and unpolarised decay proton and electron and the lifetime of the neutron to contributions of order 10^(-4) of interactions beyond the Standard model (SM).