Fully differential NLO predictions for the rare muon decay

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.

10 pages, 2 figures

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Cited by in corpus (7)

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• High-precision muon decay predictions for ALP searches
• A theory vade mecum for PSI experiments
• Fully differential NLO predictions for rare and radiative lepton decays
• Multi-parton contributions to $\bar{B}\to X_s\gamma$ at NLO