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130 GeV Fermi gamma-ray line from dark matter decay

Kyae, Bumseok ; Park, Jong-Chul

Physics letters. B, 2013-01, Vol.718 (4-5), p.1425-1429 [Periódico revisado por pares]

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Título:
130 GeV Fermi gamma-ray line from dark matter decay
Autor: Kyae, Bumseok ; Park, Jong-Chul
Assuntos: Dark matter decay ; Dimension 6 operator ; Fermi-LAT ; Gamma-ray ; Scalar dark matter
É parte de: Physics letters. B, 2013-01, Vol.718 (4-5), p.1425-1429
Descrição: The 130 GeV gamma-ray line based on tentative analyses on the Fermi-LAT data is hard to be understood with dark matter annihilation in the conventional framework of the MSSM. We point out that it can be nicely explained with two body decay of a scalar dark matter (ϕ˜DM→γγ) by the dimension 6 operator suppressed with the mass of the grand unification scale (∼1016GeV), L⊃|ϕ˜DM|2FμνFμν/MGUT2, in which the scalar dark matter ϕ˜DM develops a TeV scale vacuum expectation value. We propose a viable model explaining the 130 GeV gamma-ray line.
Editor: Elsevier B.V
Idioma: Inglês

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