t $ \bar{\mathrm{t}} $ W± + t $ \bar{\mathrm{t}} $ Z hadroproduction at NLO accuracy in QCD with Parton Shower and Hadronization effects

• DOI: 10.1007/jhep11(2012)056
• Publication Date: 2012-11-13T12:28:04Z
• Authors: M. V. Garzelli; A. Kardos; C. G. Papadopoulos; Z. Trócsányi
• Keywords: Hadronization; Parton shower; Bar (unit)

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