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arXiv · 1611.03617

Fully differential NLO predictions for the rare muon decay

G. M. Pruna·A. Signer·Y. Ulrich
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Abstract

Using the automation program GoSam, fully differential NLO corrections were obtained for the rare decay of the muon $\mu\to e\nu\bar\nu ee$. This process is an important Standard Model background to searches of the Mu3e collaboration for lepton-flavour violation, as it becomes indistinguishable from the signal $\mu\to 3e$ if the neutrinos carry little energy. With our NLO program we are able to compute the branching ratio as well as custom-tailored observables for the experiment. With minor modifications, related decays of the tau can also be computed.

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G. M. Pruna, A. Signer, Y. Ulrich. 2016-11-11. Fully differential NLO predictions for the rare muon decay. https://doi.org/10.1016/j.physletb.2016.12.039

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