Inadequacy of zero-width approximation for a light Higgs boson signal

@article{Kauer2012InadequacyOZ,
  title={Inadequacy of zero-width approximation for a light Higgs boson signal},
  author={N. Kauer and G. Passarino},
  journal={Journal of High Energy Physics},
  year={2012},
  volume={2012},
  pages={1-27}
}
A bstractIn the Higgs search at the LHC, a light Higgs boson $ \left( {{115}\,{\text{GeV}} \lesssim {M_{\text{H}}} \lesssim {13}0\,{\text{GeV}}} \right) $ is not excluded by experimental data. In this mass range, the width of the Standard Model Higgs boson is more than four orders of magnitude smaller than its mass. The zero-width approximation is hence expected to be an excellent approximation. We show that this is not always the case. The inclusion of off-shell contributions is essential to… Expand
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