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arXiv · hep-ph/0605312

The complex-mass scheme for perturbative calculations with unstable particles

A. Denner·S. Dittmaier
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Abstract

Perturbative calculations with unstable particles require the inclusion of their finite decay widths. A convenient, universal scheme for this purpose is the complex-mass scheme. It fully respects gauge-invariance, is straight-forward to apply, and has been successfully used for the calculation of various tree-level processes and of the electroweak radiative corrections to e+ e- -> 4f and H -> 4f.

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A. Denner, S. Dittmaier. 2006-05-29. The complex-mass scheme for perturbative calculations with unstable particles. https://doi.org/10.1016/j.nuclphysbps.2006.09.025

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