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Distinguishing models with μ → e observables
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DOI：10.1007/JHEP11(2023)101.png)
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摘要
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Upcoming experiments will improve the reach for the lepton flavour violating (LFV) processes mu -> e gamma, mu eee and mu A -> eA by orders of magnitude. We investigate whether this upcoming data could rule out some popular TeV-scale LFV models (the type II seesaw, the inverse seesaw and a scalar leptoquark) using a bottom-up EFT approach. We take the data to be the twelve Wilson coefficients that experiments can constrain and in principle determine independently. In this 12-dimensional coefficient space, each model can only predict points in a specific subspace; for instance, flavour change involving singlet electrons is suppressed in the seesaw models, and the leptoquark induces negligible coefficients for 4-lepton scalar operators. Using the fact that none of these models can populate the whole region accessible to upcoming experiments, we show that mu e experiments have the ability to rule them out.
Keyword:
Lepton Flavour Violation (charged)
SMEFT
Specific BSM Phenomenology
期刊
IF:
5.5
论文数:
4.0W
被引数:
13.7W
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PHYSICS LETTERS BOAAI
PHYSICS LETTERS BIF4.5
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