Massless gauge bosons other than the photon.

@article{Dobrescu2005MasslessGB,
  title={Massless gauge bosons other than the photon.},
  author={Bogdan A. Dobrescu},
  journal={Physical review letters},
  year={2005},
  volume={94 15},
  pages={
          151802
        }
}
  • B. Dobrescu
  • Published 1 November 2004
  • Physics
  • Physical review letters
Gauge bosons associated with unbroken gauge symmetries, under which all standard model fields are singlets, may interact with ordinary matter via higher-dimensional operators. A complete set of dimension-six operators involving a massless U(1) field, gamma('), and standard model fields is presented. The mu-->egamma(') decay, primordial nucleosynthesis, star cooling, and other phenomena set lower limits on the scale of chirality-flip operators in the 1-15 TeV range if the operators have… 

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