Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8188572 | Physics Letters B | 2013 | 7 Pages |
Abstract
In this Letter, we study the γ-ray signatures subsequent to the production of a Higgs boson in space by dark matter annihilations. We investigate the cases where the Higgs boson is produced at rest or slightly boosted and show that such configurations can produce characteristic bumps in the γ-ray data. These results are relevant in the case of the Standard Model-like Higgs boson provided that the dark matter mass is about 63 GeV, 109 GeV or 126 GeV, but can be generalized to any other Higgs boson masses. Here, we point out that it may be worth looking for a 63 GeV line since it could be the signature of the decay of a Standard Model-like Higgs boson produced in space, as in the case of a di-Higgs final state if mÏâ126 GeV. We show that one can set generic constraints on the Higgs boson production rates using its decay properties. In particular, using the Fermi-LAT data from the galactic center, we find that the dark matter annihilation cross section into γ+ a Standard Model-like Higgs boson produced at rest or near rest cannot exceed ãÏvãâ¼a few 10â25 cm3/s or ãÏvãâ¼a few 10â27 cm3/s respectively, providing us with information on the Higgs coupling to the dark matter particle. We conclude that Higgs bosons can indeed be used as messengers to explore the dark matter mass range.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
Authors
Nicolás Bernal, Céline BÅhm, Sergio Palomares-Ruiz, Joseph Silk, Takashi Toma,