Dark matter annihilation into gamma-ray line generated by anomalies

Abstract

We study the phenomenology of a $U_X(1)$ extension of the Standard Model where the SM particles are not charged under the new abelian group. The Green-Schwarz mechanism insures that the model is anomaly free. The erstwhile invisible dark gauge field $X$, even if produced with difficulty at the LHC has however a clear signature in gamma-ray telescopes. We investigate what BSM scale (which can be interpreted as a low-energy string scale) would be reachable by the FERMI/GLAST telescope after 5 years of running and show that a 1 TeV scale can be testable, which is highly competitive with the LHC.

Proceedings of DSU09 "The Dark Side of the Universe", 1-5 June 2009, Melbourne, 6 pages, 2 figures

References in corpus (10)

• A Theory of Dark Matter
• Significant Gamma Lines from Inert Higgs Dark Matter
• Kinetic Mixing as the Origin of Light Dark Scales
• PAMELA Positron Excess as a Signal from the Hidden Sector
• The WIMP Forest: Indirect Detection of a Chiral Square
• Anomaly driven signatures of new invisible physics at the Large Hadron Collider
• Generic dark matter signature for gamma-ray telescopes
• Probing the Green-Schwarz Mechanism at the Large Hadron Collider
• Unitarity Bounds for Gauged Axionic Interactions and the Green-Schwarz Mechanism
• Searching for Smoking Gun Signatures of Decaying Dark Matter