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arXiv · 1308.5829

Nuclear beta decay with Lorentz violation

J. P. Noordmans·H. W. Wilschut·R. G. E. Timmermans
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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).

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J. P. Noordmans, H. W. Wilschut, R. G. E. Timmermans. 2013-08-27. Nuclear beta decay with Lorentz violation. https://doi.org/10.1142/9789814566438_0041

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