Higgs portal vector dark matter for GeV scale γ-ray excess from galactic center

Journal Article · Mon Sep 01 00:00:00 EDT 2014 · Journal of Cosmology and Astroparticle Physics

DOI:https://doi.org/10.1088/1475-7516/2014/09/013· OSTI ID:22375896

Ko, P.; Park, Wan-Il; Tang, Yong ^[1]

---

1. School of Physics, KIAS, Seoul 130-722 (Korea, Republic of)

We show that the GeV scale γ-ray excess from the direction of the Galactic Center can be naturally explained by the pair annihilation of Abelian vector dark matter (VDM) into a pair of dark Higgs bosons (VV→ φ φ), followed by the subsequent decay of φ into b b-bar or τ τ-bar  . All the processes are described by a renormalizable VDM model with the Higgs portal, which is naturally flavor-dependent. Some parameter space of this scenario can be tested at the near future direct dark matter search experiments such as LUX and XENON1T.

• OSTI ID: 22375896
• Journal Information: Journal of Cosmology and Astroparticle Physics, Vol. 2014, Issue 09; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1475-7516
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
ANNIHILATION
DECAY
FLAVOR MODEL
GEV RANGE
HIGGS BOSONS
NONLUMINOUS MATTER
RENORMALIZATION
SPACE