R-parity violating supersymmetric contributions to the neutron beta decay at the one-loop level

TL;DR

This paper investigates how R-parity violating supersymmetry affects neutron beta decay at the one-loop level, revealing potential new contributions to decay correlations and providing prospects for experimental constraints on supersymmetric couplings.

Contribution

It presents the first detailed analysis of one-loop R-parity violating effects on neutron beta decay, highlighting their impact on decay correlations and experimental bounds.

Findings

R-parity violating interactions contribute to the D correlation at one-loop

Tree level contributions to the D correlation vanish

Future experiments can better constrain R-parity violating couplings

Abstract

The contribution of the R-parity violating minimal supersymmetric standard model to the neutron beta decay at the one-loop level is investigated. It is found that the baryon number and R-parity violating interactions contribute to the D correlation through one-loop corrections, while the tree level prediction is vanishing. The Fierz interference term is also investigated at the one-loop level by considering the lepton number and R-parity violating interactions. We show that future experimental progress can provide us with better constraints on some of the combinations of R-parity violating couplings.