We present a calculation of the next-to-leading-order QCD and electroweak corrections to WWW production with leptonically decaying W bosons at the LHC, fully taking into account off-shell contributions, intermediary resonances, and spin correlations. The contributions of the quark-antiquark-induced electroweak correction to typical fiducial cross sections at the LHC are of the order of 5–8 % and grow to tens of percent in the high-energy tails of distributions. We observe strong cancellations among the positive quark-photon and negative quark-antiquark-induced electroweak corrections. In addition to results based on full 2 → 6/7-particle next-to-leading-order matrix elements, we present a calculation based on the triple-pole approximation, which expands the matrix elements around the poles of three simultaneously resonant W bosons. The triple-pole approximation performs particularly well for integrated cross sections and for differential cross sections that are insensitive to off-shell effects, such as angular and rapidity distributions.
Next-to-leading-order QCD and electroweak corrections to triple-W production with leptonic decays at the LHC / S. Dittmaier, G. Knippen, C. Schwan. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1126-6708. - 2020:2(2020 Feb 01).
|Titolo:||Next-to-leading-order QCD and electroweak corrections to triple-W production with leptonic decays at the LHC|
SCHWAN, CHRISTOPHER (Ultimo)
|Parole Chiave:||Electroweak interaction; NLO Computations|
|Settore Scientifico Disciplinare:||Settore FIS/02 - Fisica Teorica, Modelli e Metodi Matematici|
|Data di pubblicazione:||1-feb-2020|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1007/JHEP02(2020)003|
|Appare nelle tipologie:||01 - Articolo su periodico|
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