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We study the production of Higgs boson pairs via gluon fusion at the LHC in the Two-Higgs-Doublet Model. We present predictions at NLO accuracy in QCD, matched to parton showers through the MC@NLO method. A dedicated reweighting technique…

高能物理 - 唯象学 · 物理学 2014-10-01 Benoit Hespel , David Lopez-Val , Eleni Vryonidou

In this work we present a new subtraction method for next-to-leading order calculations that is particularly convenient even when narrow resonances are present. The method is particularly suitable for the implementation of next-to-leading…

高能物理 - 唯象学 · 物理学 2016-01-27 Tomáš Ježo , Paolo Nason

We discuss the calculation of charged Higgs boson production in association with top quark in the MC@NLO framework for combining NLO matrix elements with a parton shower. The process is defined in a model independent manner for wide…

高能物理 - 唯象学 · 物理学 2014-11-20 C. Weydert , S. Frixione , M. Herquet , M. Klasen , E. Laenen , T. Plehn , G. Stavenga , C. D. White

We study a large-$p_T$ three-photon production in proton-proton collisions at the LHC. We use the leading order (LO) approximation of the parton Reggeization approach consistently merged with the next-to-leading order corrections originated…

高能物理 - 唯象学 · 物理学 2024-02-20 Anton Karpishkov , Vladimir Saleev

We present the total cross sections at next-to-next-to-leading order (NNLO) in the strong coupling for Higgs production via weak boson fusion. Our results are obtained via the structure function approach, which builds upon the approximate,…

高能物理 - 唯象学 · 物理学 2014-11-20 Paolo Bolzoni , Fabio Maltoni , Sven-Olaf Moch , Marco Zaro

We propose a computational strategy for NLO+PS simulations in the MC@NLO framework that starts from Born-accurate (LO) events and reweights them to the full MC@NLO S-event weight, while generating H-events separately. We validate the…

高能物理 - 唯象学 · 物理学 2026-02-23 Saad El Farkh , Rikkert Frederix , Mohamed Gouighri

We give an overview of our calculation of the next-to-next-to-leading order (NNLO) QCD corrections to W + jet production in hadronic collisions. Phenomenological results for multiple differential distributions are compared to CMS data for 8…

高能物理 - 唯象学 · 物理学 2018-07-25 Aude Gehrmann-De Ridder , Thomas Gehrmann , Nigel Glover , Alexander Huss , Duncan Walker

We consider QCD radiative corrections to Standard Model Higgs boson production in association with a W boson in hadron collisions. We present a fully exclusive calculation up to next-to-next-to-leading order (NNLO) in QCD perturbation…

高能物理 - 唯象学 · 物理学 2013-05-29 G. Ferrera , M. Grazzini , F. Tramontano

We construct a novel event generator for the process $p \> p \to \ell^- \> \bar{\nu}_\ell \> \ell'^+ \> \nu_{\ell'}$, which matches fixed-order predictions at next-to-next-to-leading order in the strong coupling to a parton shower program.…

高能物理 - 唯象学 · 物理学 2023-08-23 Alessandro Gavardi , Matthew A. Lim , Simone Alioli , Frank Tackmann

We have implemented in the RAPGAP program a previously derived subtraction method for next-to-leading order (NLO) corrections in Monte-Carlo event generators, and we show results for jet production in deep inelastic scattering. At small…

高能物理 - 唯象学 · 物理学 2007-05-23 John Collins , Xiaomin Zu

We present a next-to-leading order calculation of single-top production interfaced to Shower Monte Carlo programs, implemented according to the POWHEG method. A detailed comparison with MC@NLO and PYTHIA is carried out for several…

高能物理 - 唯象学 · 物理学 2010-03-03 Simone Alioli , Paolo Nason , Carlo Oleari , Emanuele Re

We present a generator for the production of a Higgs boson H in association with a vector boson V=W or Z (including subsequent V decay) plus zero and one jet, that can be used in conjunction with general-purpose shower Monte Carlo…

高能物理 - 唯象学 · 物理学 2015-06-16 Gionata Luisoni , Paolo Nason , Carlo Oleari , Francesco Tramontano

We present a new formulation of the MINNLO method to match NNLO QCD calculations with parton showers by using jettiness as a resummation variable. The full derivation for colour-singlet processes is presented using $0$-jettiness starting…

高能物理 - 唯象学 · 物理学 2024-02-02 Markus Ebert , Luca Rottoli , Marius Wiesemann , Giulia Zanderighi , Silvia Zanoli

The Higgs boson production cross section at pp and p\bar{p} colliders is calculated in QCD at next-to-next-to-leading order (NNLO). We find that the perturbative expansion of the production cross section is well behaved and that scale…

高能物理 - 唯象学 · 物理学 2009-11-07 Robert V. Harlander , William B. Kilgore

We consider the production of a single $Z$ or $W$ boson in association with jets at the LHC. We compute the corresponding cross sections by matching NLO QCD predictions with the Herwig++ and Pythia8 parton showers, and by merging all of the…

高能物理 - 唯象学 · 物理学 2016-03-23 Rikkert Frederix , Stefano Frixione , Andreas Papaefstathiou , Stefan Prestel , Paolo Torrielli

The calculation of NLO QCD corrections to the $t\bar{t}\to W^{+}W^{-}b\bar{b}\to e^{+}\nu_e \mu^{-}\bar{\nu}_{\mu}b\bar{b}$ process with complete off-shell effects, is briefly summarized. Besides the total cross section and its scale…

高能物理 - 唯象学 · 物理学 2011-11-24 Malgorzata Worek

Recently the next-to-next-to-leading order QCD corrections and the electroweak O(alpha) corrections to the Higgs-strahlung processes ppbar/pp -> WH/ZH + X have been calculated. Both types of corrections are of the order of 5-10%. In this…

高能物理 - 唯象学 · 物理学 2007-05-23 O. Brein , M. Ciccolini , S. Dittmaier , A. Djouadi , R. Harlander , M. Krämer

We review the key features of POWHEG, a method for interfacing parton-shower Monte Carlo generators to fixed next-to-leading order QCD computations. We describe a recently introduced framework, the POWHEG-BOX, that allows the automatic…

高能物理 - 唯象学 · 物理学 2010-12-13 Carlo Oleari

The most precise theoretical predictions for the total cross section for the associated production of a Higgs boson with a top-antitop quark pair at the LHC, first presented in \cite{Balsach:2025tth}, are reported. The calculation combines…

高能物理 - 唯象学 · 物理学 2026-02-16 Anna Kulesza

We study higher-order QCD corrections for the associated production of a top-antitop quark pair and a $W$ boson ($t{\bar t}W$ production) in proton-proton collisions. We calculate approximate NNLO (aNNLO) and approximate N$^3$LO (aN$^3$LO)…

高能物理 - 唯象学 · 物理学 2024-05-22 Nikolaos Kidonakis , Chris Foster