arXiv:1602.05141
MPP-2016-14
KA-TP-06-2016
HERWIG-2016-02
IPPP-16-11
MAN-HEP-2016-04
ZU-TH-5-16
MCnet-16-07
JHEP 1605 (2016) 106

by: Bellm, Johannes (Durham U., IPPP) et al.

Abstract:
We calculate the process $pp\to W^+W^-\to e^+ \nu_e \mu^-\bar{\nu}_\mu$ at NLO QCD, including also effective field theory (EFT) operators mediating the $ggW^+W^-$ interaction, which first occur at dimension eight. We further combine the NLO and EFT matrix elements produced by GoSam with the HERWIG7/MATCHBOX framework, which offers the possibility to study the impact of a parton shower. We assess the effects of the anomalous couplings by comparing them to top-mass effects as well as uncertainties related to variations of the renormalisation, factorisation and hard shower scales.