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arXiv · 1603.06614

Higgs--Flavon Mixing and $h \rightarrow μτ$

Katri Huitu·Venus Keus·Niko Koivunen·Oleg Lebedev
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Abstract

ATLAS and CMS have reported an excess in the flavor violating decay of the Higgs boson, $h \rightarrow μτ$. We show that this result can be accommodated through a mixing of the Higgs with a flavon, the field responsible for generating the Yukawa matrices in the lepton sector. We employ a version of the Froggatt-Nielsen mechanism at the electroweak scale, with only the leptons and the flavon transforming non--trivially under the corresponding symmetry group. Non--observation of charged lepton flavor violation (LFV) in other processes imposes important constraints on the model, which we find to be satisfied in substantial regions of parameter space.

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Katri Huitu, Venus Keus, Niko Koivunen, Oleg Lebedev. 2016-04-26. Higgs--Flavon Mixing and $h \rightarrow μτ$. https://arxiv.org/abs/1603.06614

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