Is the Decay of the Higgs Boson to a Photon and a Dark Photon Currently Observable at the LHC?
Journal
Physical review letters
Journal Volume
130
Journal Issue
14
Date Issued
2023-04-07
Author(s)
Beauchesne, Hugues
Abstract
Many attempts have been made to observe the decay of the Higgs boson to a photon and an invisible massless dark photon. For this decay to be potentially observable at the LHC, new mediators that communicate between the standard model and the dark photon must exist. In this Letter, we study bounds on such mediators coming from the Higgs signal strengths, oblique parameters, electric dipole moment of the electron, and unitarity. We find that the branching ratio of the Higgs boson to a photon and a dark photon is constrained to be far smaller than the sensitivity of current collider searches, thus calling for a reconsideration of current experimental efforts.
Subjects
High Energy Physics - Phenomenology; High Energy Physics - Phenomenology; High Energy Physics - Experiment
Description
6 pages, 1 figure, matches published version
Type
journal article