Publications de Valentin Hirschi

Update of the Binoth Les Houches Accord for a standard interface between Monte Carlo tools and one-loop programs

We present an update of the Binoth Les Houches Accord (BLHA) to standardise the interface between Monte Carlo programs and codes providing one-loop matrix elements. (C) 2013 Elsevier B.V. All rights reserved. ...

Elsevier Science Bv2014

Automation of One-Loop Computations for Scattering Amplitudes and Applications to Collider Phenomenology

Valentin Hirschi

This thesis presents the automation of loop computations for the calculation of Next-to-Leading Order contributions to theoretical predictions for particle colliders. We start with the general techniques for performing such predictions and how they can be ...

EPFL2013

Single-top t-channel production with off-shell and non-resonant effects

Valentin Hirschi

This Letter details and discusses the next-to-leading order QCD corrections to t-channel electro-weak W(+)bj production, where finite top-width effects are consistently taken into account. The computation is done within the AMC@NLO framework and includes b ...

Elsevier Science Bv2013

aMC@NLO predictions for Wjj production at the Tevatron

Valentin Hirschi, Paolo Torrielli

We use aMC@NLO to predict the l nu + 2-jet cross section at the NLO accuracy in QCD matched to parton shower simulations. We find that the perturbative expansion is well behaved for all the observables we study, and in particular for those relevant to the ...

Springer Nature2012

Four-lepton production at hadron colliders: aMC@NLO predictions with theoretical uncertainties

Valentin Hirschi, Paolo Torrielli

We use aMC@NLO to study the production of four charged leptons at the LHC, performing parton showers with both HERWIG and PYTHIA6. Our underlying matrix element calculation features the full next-to-leading order O(alpha(S)) result and the O(alpha(2)(S)) c ...

Springer Nature2012

W and Z/gamma* boson production in association with a bottom-antibottom pair

Valentin Hirschi, Paolo Torrielli

We present a study of l nu b (b) over bar and l(+)l(-)b (b) over bar production at hadron colliders. Our results, accurate to the next-to-leading order in QCD, are based on automatic matrix-element calculations performed by MadLoop and MadFKS, and are give ...

Springer Nature2011

Scalar and pseudoscalar Higgs production in association with a top-antitop pair

Valentin Hirschi, Paolo Torrielli

We present the calculation of scalar and pseudoscalar Higgs production in association with a top-antitop pair to the next-to-leading order (NLO) accuracy in QCD, interfaced with parton showers according to the MC@NLO formalism. We apply our results to the ...

2011

Automation of one-loop QCD computations

Valentin Hirschi

We present the complete automation of the computation of one-loop QCD corrections, including UV renormalization, to an arbitrary scattering process in the Standard Model. This is achieved by embedding the OPP integrand reduction technique, as implemented i ...

Springer Nature2011