Light neutrino contribution: is it all there is to neutrinoless double beta decay?

TL;DR

This paper investigates how one-loop QCD corrections significantly enhance the light neutrino contribution to neutrinoless double beta decay, suggesting it may account for the entire decay process within current experimental limits.

Contribution

It provides a detailed analysis of QCD corrections to the light neutrino contribution, revealing their substantial impact and potential to explain the decay without invoking new physics.

Findings

QCD corrections cause large enhancement of decay rate

Structures mimicking new physics are generated by QCD effects

Decay rate may be saturated by light neutrino contribution alone

Abstract

We consider perturbative one loop QCD corrections to the light neutrino contribution to neutrinoless double beta decay and find large enhancement to the rate. QCD corrections also generate structures which mimic new physics contributions usually considered. Within some approximations, the net effect seem to almost saturate the experimental limits, and therefore seems to implt that this is all there is to neutrinoless double beta decay.