Extra U(1) as natural source of a monochromatic gamma ray line - Archive ouverte HAL
Article Dans Une Revue Journal of High Energy Physics Année : 2012

Extra U(1) as natural source of a monochromatic gamma ray line

Résumé

Extensions of the Standard Model with an extra U'(1) abelian group generically generate terms coming from loops of heavy fermions, leading to three gauge boson couplings, in particular Z'Z gamma. We show that WMAP data constrains the gauge coupling of the group g_D to values comparable with the electro-weak ones, rather independently of the mass of Z'. Moreover, the model predicts a monochromatic gamma-ray line which can fit a 130 GeV signal at the FERMI telescope for natural values of the Chern-Simons terms and a dark matter mass around 144.5 GeV.

Dates et versions

hal-00695657 , version 1 (09-05-2012)

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Emilian Dudas, Y. Mambrini, Stefan Pokorski, Alberto Romagnoni. Extra U(1) as natural source of a monochromatic gamma ray line. Journal of High Energy Physics, 2012, 1210, pp.123. ⟨hal-00695657⟩
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