TY - JOUR
T1 - Dominant NNLO corrections to four-fermion production near the W-pair production threshold
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
Y1 - 2009/1/21
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.
UR - http://www.scopus.com/inward/record.url?scp=53949120221&partnerID=8YFLogxK
U2 - 10.1016/j.nuclphysb.2008.08.006
DO - 10.1016/j.nuclphysb.2008.08.006
M3 - Article
AN - SCOPUS:53949120221
SN - 0550-3213
VL - 807
SP - 1
EP - 32
JO - Nuclear Physics, Section B
JF - Nuclear Physics, Section B
IS - 1-2
ER -