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arXiv · 1807.10288

Constraints on 2l2q operators from $\mu - e$ flavour-changing meson decays

Sacha Davidson·Albert Saporta
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Abstract

We study lepton flavour violating two- and three-body decays of pseudoscalar mesons in Effective Field Theory (EFT). We give analytic formulae for the decay rates in the presence of a complete basis of QED and QCD-invariant operators. The constraints are obtained at the experimental scale, then translated to the weak scale via one-loop RGEs. The large RG-mixing between tensor and (pseudo)scalar operators weakens the constraints on scalar and pseudoscalar operators at the weak scale.

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Sacha Davidson, Albert Saporta. 2018-07-26. Constraints on 2l2q operators from $\mu - e$ flavour-changing meson decays. https://doi.org/10.1103/physrevd.99.015032

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