Nuclear beta decay with Lorentz violation
High Energy Physics - Phenomenology
2017-08-23 v2 Nuclear Theory
Abstract
We consider the possibility of Lorentz-invariance violation in weak-decay processes. We present a general approach that entails modifying the W-boson propagator by adding a Lorentz-violating tensor to it. We describe the effects of Lorentz violation on nuclear beta decay in this scenario. In particular we show the expression for a first-forbidden transition with a spin change of two. Using data from an old experiment on the rotational invariance of yttrium-90, we derive several bounds on the Lorentz-violating parameters of the order of 10^(-6)-10^(-8).
Cite
@article{arxiv.1308.5829,
title = {Nuclear beta decay with Lorentz violation},
author = {J. P. Noordmans and H. W. Wilschut and R. G. E. Timmermans},
journal= {arXiv preprint arXiv:1308.5829},
year = {2017}
}
Comments
4 pages; presented at the Sixth Meeting on CPT and Lorentz Symmetry, Bloomington, Indiana, June 17-21, 2013; Added references