t tbar W and t tbar Z Hadroproduction at NLO accuracy in QCD with Parton Shower and Hadronization effects

Abstract

We present theoretical predictions for the hadroproduction of t tbar W+, t tbar W- and t tbar Z at LHC as obtained by matching numerical computations at NLO accuracy in QCD with Shower Monte Carlo programs. The calculation is performed by PowHel, relying on the POWHEG-BOX framework, that allows for the matching between the fixed order computation, with input of matrix elements produced by the HELAC-NLO collection of event generators, and the Parton Shower evolution, followed by hadronization and hadron decays as described by PYTHIA and HERWIG. We focus on the dilepton and trilepton decay channels, studied recently by the CMS Collaboration.

arXiv comment21 pages 12 figures

References in corpus (20)

• PYTHIA 6.4 Physics and Manual
• PYTHIA 6.2 Physics and Manual
• The anti-k_t jet clustering algorithm
• FastJet user manual
• A general framework for implementing NLO calculations in shower Monte Carlo programs: the POWHEG BOX
• A New Method for Combining NLO QCD with Shower Monte Carlo Algorithms
• Matching NLO QCD computations with Parton Shower simulations: the POWHEG method
• Three-jet cross sections to next-to-leading order
• MCFM for the Tevatron and the LHC
• Handbook of LHC Higgs Cross Sections: 2. Differential Distributions
• t \bar{t} W production and decay at NLO
• Automated one-loop calculations: a proof of concept
• Polarizing the Dipoles
• Search for new physics with same-sign isolated dilepton events with jets and missing transverse energy
• Standard Model Higgs boson production in association with a top anti-top pair at NLO with parton showering
• Top quark pair production in association with a Z-boson at NLO accuracy
• Top quark pair production in association with a jet with NLO parton showering
• A Positive-Weight Next-to-Leading-Order Monte Carlo for e+e- Annihilation to Hadrons
• Z0 - boson production in association with a top anti-top pair at NLO accuracy with parton shower effects
• NLO event samples for the LHC

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