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arXiv · 0807.0102

Dominant NNLO corrections to four-fermion production near the W-pair production threshold

S. Actis·M. Beneke·P. Falgari·C. Schwinn
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Abstract

We calculate the parametrically dominant next-to-next-to-leading order corrections to four-fermion production e^- e^+ -> mu^- nubar_mu u dbar + X at centre-of-mass energies near the W-pair production threshold employing the method of unstable-particle effective theory. In total the correction is small, leading to a shift of 3 MeV in the W-mass measurement. We also discuss the implementation of realistic cuts and provide a result for the interference of single-Coulomb and soft radiative corrections that can easily be extended to include an arbitrary number of Coulomb photons.

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S. Actis, M. Beneke, P. Falgari, C. Schwinn. 2008-07-01. Dominant NNLO corrections to four-fermion production near the W-pair production threshold. https://doi.org/10.1016/j.nuclphysb.2008.08.006

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