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arXiv · 0909.5053

$γ-$ray line generated by the Green-Schwarz mechanism

Y. Mambrini
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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.

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Y. Mambrini. 2009-09-28. $γ-$ray line generated by the Green-Schwarz mechanism. https://doi.org/10.1063/1.3264555

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