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Approximations for W-Pair Production at Linear-Collider Energies

A. Denner·S. Dittmaier
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Abstract

We determine the accuracy of various approximations to the O(alpha) corrections for on-shell W-pair production. While an approximation based on the universal corrections arising from initial-state radiation, from the running of alpha, and from corrections proportional to m_t^2 fails in the Linear-Collider energy range, a high-energy approximation improved by the exact universal corrections is sufficiently good above about 500GeV. These results indicate that in Monte Carlo event generators for off-shell W-pair production the incorporation of the universal corrections is not sufficient and more corrections should be included.

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A. Denner, S. Dittmaier. 1997-06-17. Approximations for W-Pair Production at Linear-Collider Energies. https://arxiv.org/abs/hep-ph/9706388

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