Gamma-rays Constraint on Higgs Production from Dark Matter Annihilation

TL;DR

This paper explores how gamma-ray observations can constrain dark matter annihilation processes that produce Higgs bosons, focusing on gamma-ray lines from Higgs decay to photons.

Contribution

It provides a simple analysis linking gamma-ray line signals to limits on Higgs production cross sections from dark matter annihilation.

Findings

Gamma-ray lines can set bounds on Higgs production in dark matter annihilation.

Higgs decay to gamma rays produces detectable signals in cosmic-ray observations.

Abstract

A gamma line signal in cosmic-ray observation would be found when Higgs is produced at rest or almost rest by DM annihilation because of decay of 126 GeV Higgs into two gamma. This line signal gives a constraint on Higgs production cross section by DM. We examine this point with simple analysis in this work.