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

  title={Extra U(1) as natural source of a monochromatic gamma ray line},
  author={E. Dudas and Y. Mambrini and S. Pokorski and A. Romagnoni},
  journal={Journal of High Energy Physics},
  • E. Dudas, Y. Mambrini, +1 author A. Romagnoni
  • Published 2012
  • Physics
  • Journal of High Energy Physics
  • A bstractExtensions 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′Zγ. We show that WMAP data constrains the gauge coupling of the group gD to values comparable with the electro-weak ones, rather independently of the mass of Z′. Moreover, the model predicts a monochromatic γ-ray line which can fit a 130 GeV signal at the FERMI telescope for natural values of the Chern… CONTINUE READING

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