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arXiv · 1412.3257

Question of Lorentz invariance in muon decay

J. P. Noordmans·C. J. G. Onderwater·H. W. Wilschut·R. G. E. Timmermans
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Abstract

Possibilities to test the Lorentz invariance of the weak interaction in muon decay are considered. We derive the direction-dependent muon-decay rate with a general Lorentz-violating addition to the W-boson propagator. We discuss measurements of the directional and boost dependence of the Michel parameters and of the muon lifetime as a function of absolute velocity. The total muon-decay rate in the Lorentz-violating Standard Model Extension is addressed. Suggestions are made for dedicated (re)analyses of the pertinent data and for future experiments.

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J. P. Noordmans, C. J. G. Onderwater, H. W. Wilschut, R. G. E. Timmermans. 2014-12-10. Question of Lorentz invariance in muon decay. https://doi.org/10.1103/physrevd.93.116001

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