$H \rightarrow τ^+ τ^- γ$ as a Probe of the $τ$ Magnetic Dipole Moment

Iftah Galon; Arvind Rajaraman; Tim M. P. Tait

doi:10.1007/JHEP12(2016)111

paper

$H \to τ^{+} τ^{-} γ$ as a Probe of the $τ$ Magnetic Dipole Moment

arXiv:1610.01601 · doi:10.1007/JHEP12(2016)111

Abstract

Low energy observables involving the Standard Model fermions which are chirality-violating, such as anomalous electromagnetic moments, necessarily involve an insertion of the Higgs in order to maintain $S U (2) \times U (1)$ gauge invariance. As the result, the properties of the Higgs boson measured at the LHC impact our understanding of the associated low-energy quantities. We illustrate this feature with a discussion of the electromagnetic moments of the $τ$ -lepton, as probed by the rare decay $H \to τ^{+} τ^{-} γ$ . We assess the feasibility of measuring this decay at the LHC, and show that the current bounds from lower energy measurements imply that $13 TeV$ running is very likely to improve our understanding of new physics contributing to the anomalous magnetic moment of the tau.

arXiv comment13 pages, 3 figures

$H \to τ^{+} τ^{-} γ$ as a Probe of the $τ$ Magnetic Dipole Moment

Abstract

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H→τ+τ−γ as a Probe of the τ Magnetic Dipole Moment

Abstract

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Cited by in corpus (11)

$H \to τ^{+} τ^{-} γ$ as a Probe of the $τ$ Magnetic Dipole Moment