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arXiv · 1701.08767

Dark sectors and enhanced $h\to τμ$ transitions

Iftah Galon·Jure Zupan
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Abstract

LHC searches with $τ$ leptons in the final state are always inclusive in missing-energy sources. A signal in the flavor-violating Higgs decay search, $h\toτμ$, could therefore equally well be due to a flavor conserving decay, but with an extended decay topology with additional invisible particles. We demonstrate this with the three-body decay $h\toτμφ$, where $φ$ is a flavorful mediator decaying to a dark-sector. This scenario can give thermal relic dark matter that carries lepton flavor charges, a realistic structure of the charged lepton masses, and explain the anomalous magnetic moment of the muon, $(g-2)μ$, while simultaneously obey all indirect constraints from flavor-changing neutral currents. Another potentially observable consequence is the broadening of the collinear mass distributions in the $h\to τμ$ searches.

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Iftah Galon, Jure Zupan. 2017-01-30. Dark sectors and enhanced $h\to τμ$ transitions. https://doi.org/10.1007/jhep05(2017)083

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