Flavor violating muon decay into an electron and a light gauge boson

We analyze the flavor violating muon decay μ→eχ, where χ is a massive gauge boson, with emphasis in the regime where χ is ultralight. We first study this process from an effective field theory standpoint in terms of form factors. We then present two explicit models where μ→eχ is generated at tree le...

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Bibliographic Details
Main Authors: Alejandro Ibarra, Marcela Marín, Pablo Roig
Format: Article
Language:English
Published: Elsevier 2022-04-01
Series:Physics Letters B
Online Access:http://www.sciencedirect.com/science/article/pii/S0370269322000673