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NLO electroweak automation and precise predictions for W + multijet production at the LHC
Ist Teil von
The journal of high energy physics, 2015-04, Vol.2015 (4), Article 12
Ort / Verlag
Berlin/Heidelberg: Springer Berlin Heidelberg
Erscheinungsjahr
2015
Quelle
EZB Electronic Journals Library
Beschreibungen/Notizen
A
bstract
We present a fully automated implementation of next-to-leading order electroweak (NLO EW) corrections in the O
pen
L
oops
matrix-element generator combined with the
Sherpa
and M
unich
Monte Carlo frameworks. The process-independent character of the implemented algorithms opens the door to NLO QCD + EW simulations for a vast range of Standard Model processes, up to high particle multiplicity, at current and future colliders. As a first application, we present NLO QCD + EW predictions for the production of positively charged on-shell
W
bosons in association with up to three jets at the Large Hadron Collider. At the TeV energy scale, due to the presence of large Sudakov logarithms, EW corrections reach the 20-40% level and play an important role for searches of physics beyond the Standard Model. The dependence of NLO EW effects on the jet multiplicity is investigated in detail, and we find that
W
+ multijet final states feature genuinely different EW effects as compared to the case of
W
+ 1 jet.