Lorentz violation in neutron and allowed nuclear beta decay

Abstract

We explore the possibility that the weak interaction violates Lorentz, and in particular rotational, invariance in neutron and allowed nuclear beta decay. A broad class of Lorentz-violating effects is considered, in which the standard propagator of the W-boson acquires an additional Lorentz-violating tensor. The general decay rate for allowed beta decay that incorporates such a modified propagator is derived. The resulting Lorentz-violating signals are discussed for the different types of beta-decay transitions, Fermi, Gamow-Teller, and mixed. We study the implications of our formalism for dedicated beta-decay experiments. We give a short overview of the few relevant experiments that have been performed or are ongoing.

23 pages; added references

References in corpus (3)

• Electrodynamics with Lorentz-violating operators of arbitrary dimension
• Tests of the standard electroweak model in beta decay
• Classification of Dimension 5 Lorentz Violating Interactions in the Standard Model

Cited by in corpus (26)

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