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

S. Actis; M. Beneke; P. Falgari; C. Schwinn

doi:10.1016/j.nuclphysb.2008.08.006

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

S. Actis
, M. Beneke
, P. Falgari
, C. Schwinn

RWTH Aachen

Publikation: Beitrag in Fachzeitschrift › Artikel › Begutachtung

34 Zitate (Scopus)

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.

Originalsprache	Englisch
Seiten (von - bis)	1-32
Seitenumfang	32
Fachzeitschrift	Nuclear Physics, Section B
Jahrgang	807
Ausgabenummer	1-2
DOIs	https://doi.org/10.1016/j.nuclphysb.2008.08.006
Publikationsstatus	Veröffentlicht - 21 Jan. 2009
Extern publiziert	Ja

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10.1016/j.nuclphysb.2008.08.006

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title = "Dominant NNLO corrections to four-fermion production near the W-pair production threshold",

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.",

author = "S. Actis and M. Beneke and P. Falgari and C. Schwinn",

note = "Funding Information: This work is supported by the DFG Sonderforschungsbereich/Transregio 9 “Computergest{\"u}tzte Theoretische Teilchenphysik”. Feynman diagrams have been drawn with the packages Axodraw [41] and Jaxodraw [42] . ",

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doi = "10.1016/j.nuclphysb.2008.08.006",

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AU - Actis, S.

AU - Beneke, M.

AU - Falgari, P.

AU - Schwinn, C.

N1 - Funding Information: This work is supported by the DFG Sonderforschungsbereich/Transregio 9 “Computergestützte Theoretische Teilchenphysik”. Feynman diagrams have been drawn with the packages Axodraw [41] and Jaxodraw [42] .

PY - 2009/1/21

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N2 - 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.

AB - 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.

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DO - 10.1016/j.nuclphysb.2008.08.006

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AN - SCOPUS:53949120221

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EP - 32

JO - Nuclear Physics, Section B

JF - Nuclear Physics, Section B

IS - 1-2

ER -

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

Abstract

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