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Off-Shell Scattering Amplitudes for WW Scattering and the Role of the Photon Pole

J. Bartels·F. Schwennsen
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Abstract

We derive analytic expressions for high energy $2 \to 2$ off-shell scattering amplitudes of weak vector bosons. They are obtained from six fermion final states in processes of the type $e^+ e^- \to \barν_e + (WW) + ν_e \to \barν_e + (lν)(lν) + ν_e$. As an application we reconsider the unitarity bounds on the Higgs mass. Particular attention is given to the role of the photon exchange which has not been considered in earlier investigations; we find that the photon weakens the bound of the Higgs mass.

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J. Bartels, F. Schwennsen. 2005-06-06. Off-Shell Scattering Amplitudes for WW Scattering and the Role of the Photon Pole. https://doi.org/10.1103/physrevd.72.034035

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