Anomalous coupling, top-mass and parton-shower effects in ${W^+W^-}$ production

Johannes Bellm; Stefan Gieseke; Nicolas Greiner; Gudrun Heinrich; Simon Platzer; Christian Reuschle; Johann Felix von Soden-Fraunhofen

Anomalous coupling, top-mass and parton-shower effects in ${W^+W^-}$ production

High Energy Physics - Phenomenology 2016-02-17 v1

Authors: Johannes Bellm , Stefan Gieseke , Nicolas Greiner , Gudrun Heinrich , Simon Platzer , Christian Reuschle , Johann Felix von Soden-Fraunhofen

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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.

Keywords

anomalous couplings top-quark mass parton shower W+W- production effective field theory NLO QCD ggWW interaction

Cite

@article{arxiv.1602.05141,
  title  = {Anomalous coupling, top-mass and parton-shower effects in ${W^+W^-}$ production},
  author = {Johannes Bellm and Stefan Gieseke and Nicolas Greiner and Gudrun Heinrich and Simon Platzer and Christian Reuschle and Johann Felix von Soden-Fraunhofen},
  journal= {arXiv preprint arXiv:1602.05141},
  year   = {2016}
}

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24 pages, 16 figures

Anomalous coupling, top-mass and parton-shower effects in ${W^+W^-}$ production

Abstract

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