Electromagnetic width of the sigma meson from the sigma model.

@article{Hadjitheodoridis1988ElectromagneticWO,
  title={Electromagnetic width of the sigma meson from the sigma model.},
  author={Hadjitheodoridis and Moussallam},
  journal={Physical review. D, Particles and fields},
  year={1988},
  volume={37 5},
  pages={
          1331-1333
        }
}

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