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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30 Scopus citations

Abstract

We calculate the parametrically dominant next-to-next-to-leading order corrections to four-fermion production e- e+ → μ- over(ν, ̄)μ u over(d, ̄) + 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.

Original languageEnglish
Pages (from-to)1-32
Number of pages32
JournalNuclear Physics, Section B
Volume807
Issue number1-2
DOIs
StatePublished - 21 Jan 2009
Externally publishedYes

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