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Scattering amplitudes with open loops.
We introduce a new technique to generate scattering amplitudes at one loop. Expand
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Handbook of LHC Higgs Cross Sections: 3. Higgs Properties
This Report summarizes the results of the activities in 2012 and the first half of 2013 of the LHC Higgs Cross Section Working Group. The main goal of the working group was to present the state ofExpand
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ZZ production at hadron colliders in NNLO QCD
Charged gauge boson pair production at the Large Hadron Collider allows detailed probes of the fundamental structure of electroweak interactions. We present precise theoretical predictions forExpand
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NLO matching for tt¯bb¯ production with massive b-quarks
Abstract Theoretical uncertainties in the simulation of t t ¯ b b ¯ production represent one of the main obstacles that still hamper the observation of Higgs-boson production in association withExpand
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Precise Higgs-background predictions: merging NLO QCD and squared quark-loop corrections to four-lepton + 0,1 jet production
A bstractWe present precise predictions for four-lepton plus jets production at the LHC obtained within the fully automated Sherpa + OpenLoops framework. Off-shell intermediate vector bosons andExpand
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Automatic one-loop calculations with Sherpa+OpenLoops
We report on the OpenLoops generator for one-loop matrix elements and its application to four-lepton production in association with up to one jet. The open loops algorithm uses a numerical recursionExpand
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A unified NLO description of top-pair and associated Wt production
We present an NLO simulation of WWbb production with massive b-quarks at the LHC. Off-shell and non-resonant contributions associated with top-pair and single-top channels and with leptonic W-bosonExpand
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Next-to-leading order simulations with Sherpa+OpenLoops
Fabio Cascioli,a Stefan Hoche,b Frank Krauss,c Philipp Maierhofer∗,a Niccolo Moretti,a Stefano Pozzorini,a Marek Schonherrc and Frank Siegertd aInstitut fur Theoretische Physik, Universitat Zurich,Expand
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A recursive one-loop algorithm for many-particle amplitudes
We report on a new algorithm for the numeric evaluation of one -loop amplitudes. The method is based on the recursive concatenation of tree structures t o build numerator functions as loopmomentumExpand