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We calculate the next-to-leading order (NLO) QCD corrections to the $J/\psi +W$ production at the LHC, and provide the theoretical distribution of the $J/\psi$ transverse momentum. Our results show that the differential cross section…

High Energy Physics - Phenomenology · Physics 2011-02-25 Li Gang , Song Mao , Zhang Ren-You , Ma Wen-Gan

We present results of the first calculation of next-to-leading-order electroweak corrections to W-boson pair production at the LHC that fully takes into account leptonic W-boson decays and off-shell effects. Employing realistic event…

High Energy Physics - Phenomenology · Physics 2016-06-29 Benedikt Biedermann , Marina Billoni , Ansgar Denner , Stefan Dittmaier , Lars Hofer , Barbara Jager , Lukas Salfelder

We present the QCD radiative corrections to the full off-shell $\rm t\bar{t}W^+$ production, considering a final state with three charged leptons, two b jets and missing energy. All interferences, off-shell effects and spin correlations are…

High Energy Physics - Phenomenology · Physics 2020-12-16 Ansgar Denner , Giovanni Pelliccioli

We consider QCD radiative corrections to $ZZ$ production for all experimentally relevant leptonic processes. We report on a novel computation of next-to-next-to-leading-order (NNLO) corrections to the diboson signature with two charged…

High Energy Physics - Phenomenology · Physics 2018-10-17 Stefan Kallweit , Marius Wiesemann

We report the results of a computation of the full next-to-leading order QCD corrections to the production of two $b\bar{b}$ pairs at the LHC. This calculation at the parton level provides predictions for well separated $b$-jets. The…

High Energy Physics - Phenomenology · Physics 2011-09-29 Nicolas Greiner , Alberto Guffanti , Thomas Reiter , Jürgen Reuter

We compute the next-to-leading order (NLO) QCD corrections to the $gg \to W^+ W^- \to l^+_1 \nu_1 l^-_2 \bar \nu_2$ process, mediated by a massless quark loop, at the LHC. This process first contributes to the hadroproduction of $W^+W^-$ at…

High Energy Physics - Phenomenology · Physics 2016-01-27 Fabrizio Caola , Kirill Melnikov , Raoul Röntsch , Lorenzo Tancredi

We present an analysis of the forward-backward asymmetry in the production of top quark pairs at the Tevatron collider. We use novel Monte Carlo methods for merging matrix elements and parton showers to combine NLO QCD predictions for tt…

High Energy Physics - Phenomenology · Physics 2013-08-09 Stefan Hoeche , Junwu Huang , Gionata Luisoni , Marek Schoenherr , Jan Winter

In this work we perform the first ever calculation of jet event shapes at hadron colliders at next-to-next-to leading order (NNLO) in QCD. The inclusion of higher order corrections removes the shape difference observed between data and…

High Energy Physics - Phenomenology · Physics 2023-04-05 Manuel Alvarez , Josu Cantero , Michal Czakon , Javier Llorente , Alexander Mitov , Rene Poncelet

Vector-boson fusion processes are an important tool for the study of electroweak symmetry breaking at hadron colliders, since they allow to distinguish a light Higgs boson scenario from strong weak boson scattering. We here consider the…

High Energy Physics - Phenomenology · Physics 2008-11-26 Barbara Jager , Carlo Oleari , Dieter Zeppenfeld

We compute the next-to-leading order QCD corrections to the production of W bosons in association with three jets at the Tevatron in the leading color approximation, which we define by considering the number of colors and the number of…

High Energy Physics - Phenomenology · Physics 2009-11-10 R. Keith Ellis , Kirill Melnikov , Giulia Zanderighi

The tri-boson production is one of the key processes for the study of quartic gauge couplings. Next-to-leading order (NLO) corrections are mandatory to reduce theoretical uncertainties. In this study, the most up-to-date predictions…

High Energy Physics - Phenomenology · Physics 2013-10-24 Dao Thi Nhung , Le Duc Ninh , Marcus M. Weber

The process $p\,p\hskip-7pt\hbox{$^{^{(\!-\!)}}$} \rightarrow W^{+} W^{-} + X \rightarrow \ell^+_1 \nu_1 \ell^-_2 \bar \nu_2 + X$ is calculated to ${\cal O}(\alpha_s)$ for general $C$ and $P$ conserving $WWV$ couplings ($V=\gamma,\, Z$).…

High Energy Physics - Phenomenology · Physics 2009-10-28 U. Baur , T. Han , J. Ohnemus

We present next-to-leading order (NLO) QCD predictions to $W^+W^-$ production in association with up to three jets at hadron colliders. We include contributions from couplings of the $W$ bosons to light quarks as well as trilinear vector…

High Energy Physics - Phenomenology · Physics 2017-02-15 F. Febres Cordero , P. Hofmann , H. Ita

We report on the calculation of the next-to-leading order QCD corrections to the production of top--antitop-quark pairs in association with a hard jet at the Tevatron and at the LHC. Results for integrated and differential cross sections…

High Energy Physics - Phenomenology · Physics 2009-11-13 S. Dittmaier , P. Uwer , S. Weinzierl

We present theoretical predictions for five jet production in proton-proton collisions at next-to-leading order accuracy in QCD. Inclusive as well as differential observables are studied for collision energies of 7 and 8 TeV. In general the…

High Energy Physics - Phenomenology · Physics 2014-02-26 Simon Badger , Benedikt Biedermann , Peter Uwer , Valery Yundin

Using BlackHat in conjunction with SHERPA, we have computed next-to-leading order QCD predictions for a variety of distributions in Z,gamma*+1,2,3-jet production at the Tevatron, where the Z boson or off-shell photon decays into an…

High Energy Physics - Phenomenology · Physics 2013-08-21 C. F. Berger , Z. Bern , L. J. Dixon , F. Febres Cordero , D. Forde , T. Gleisberg , H. Ita , D. A. Kosower , D. Maitre

We present the NLO QCD corrections to the production of a W+W- pair and two b-jets, including the leptonic decays of the W bosons. Contributions from singly resonant and non-resonant top quarks are fully taken into account. We also discuss…

High Energy Physics - Phenomenology · Physics 2013-12-25 Johannes Schlenk , Gudrun Heinrich , Jan Winter

We present results of a computation of NLO QCD corrections to the production of an off-shell top--antitop pair in association with an off-shell $\text{W}^+$ boson in proton--proton collisions. As the calculation is based on the full matrix…

High Energy Physics - Phenomenology · Physics 2021-05-21 Ansgar Denner , Giovanni Pelliccioli

The production of W or Z bosons in association with two jets is an important background to the Higgs boson search in vector-boson fusion at the LHC. The purely electroweak component of this background is dominated by vector-boson fusion,…

High Energy Physics - Phenomenology · Physics 2009-11-10 Carlo Oleari , Dieter Zeppenfeld

We study the production of W bosons at large transverse momentum in pp collisions at the Large Hadron Collider (LHC). We calculate the complete next-to-leading order (NLO) corrections to the differential cross section. We find that the NLO…

High Energy Physics - Phenomenology · Physics 2008-11-26 Richard J. Gonsalves , Nikolaos Kidonakis , Agustin Sabio Vera