Galactic Center gamma ray excess from two Higgs doublet portal dark matter

dc.contributor.authorOkada, Nobuchika
dc.contributor.authorSeto, Osamu
dc.contributor.otherUniversity of Alabama Tuscaloosa
dc.contributor.otherHokkai Gakuen University
dc.date.accessioned2019-05-16T18:44:31Z
dc.date.available2019-05-16T18:44:31Z
dc.date.copyright2014
dc.date.issued2014-10-21
dc.description.abstractWe consider a simple extension of the type-II two-Higgs-doublet model by introducing a real scalar as a candidate for dark matter in the present Universe. The main annihilation mode of the dark matter particle with a mass of around 31-40 GeV is into a b (b) over bar pair, and this annihilation mode suitably explains the observed excess of the gamma-ray flux from the Galactic Center. We identify the parameter region of the model that can fit the gamma-ray excess and satisfy phenomenological constraints, such as the observed dark matter relic density and the null results of direct dark matter search experiments. Most of the parameter region is found to be within the search reach of future direct dark matter detection experiments.en_US
dc.format.mimetypeapplication/pdf
dc.identifier.citationOkada, N., Seto, O. (2014): Galactic Center Gamma Ray Excess from Two Higgs Doublet Portal Dark Matter. Physical Review D, 90(8). DOI: https://doi.org/10.1103/PhysRevD.90.083523
dc.identifier.doi10.1103/PhysRevD.90.083523
dc.identifier.issn1550-7998
dc.identifier.urihttp://ir.ua.edu/handle/123456789/5561
dc.languageEnglish
dc.language.isoen_US
dc.publisherAmerican Physical Society
dc.rights.holderAmerican Physical Society
dc.subjectFERMI-LAT
dc.subjectBUBBLES
dc.subjectAstronomy & Astrophysics
dc.subjectPhysics, Particles & Fields
dc.subjectPhysics
dc.titleGalactic Center gamma ray excess from two Higgs doublet portal dark matteren_US
dc.typetext
dc.typeArticle
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