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We report on the calculation of the full next-to-leading order QCD corrections to the production of top anti-top bottom anti-bottom (ttbb) final states at the LHC, which deliver a serious background contribution to the production of a Higgs…

High Energy Physics - Phenomenology · Physics 2009-09-02 A. Bredenstein , A. Denner , S. Dittmaier , S. Pozzorini

We present a fully-differential calculation of the NNLO QCD corrections to the t-channel mechanism for producing single top quarks at the LHC. We work in the structure function approximation, computing QCD corrections to the light- and…

High Energy Physics - Phenomenology · Physics 2015-06-19 Mathias Brucherseifer , Fabrizio Caola , Kirill Melnikov

We report on the calculation of the next-to-next-to-leading order (NNLO) QCD corrections to the production of two gluonic jets at hadron colliders. In previous work, we discussed gluonic dijet production in the gluon-gluon channel. Here,…

High Energy Physics - Phenomenology · Physics 2014-07-22 James Currie , Aude Gehrmann-De Ridder , Thomas Gehrmann , Nigel Glover , Joao Pires , Steven Wells

We present a computation of the one-loop QCD corrections to top-quark pair production in association with a $W$ boson, including terms up to order $\varepsilon^2$ in dimensional regularization. Providing a first glimpse into the complexity…

High Energy Physics - Phenomenology · Physics 2025-11-05 Matteo Becchetti , Maximilian Delto , Sara Ditsch , Philipp Alexander Kreer , Mattia Pozzoli , Lorenzo Tancredi

To match the precision of present and future measurements of Z-boson production at hadron colliders, electroweak radiative corrections must be included in the theory predictions. In this paper we consider their effect on the transverse…

High Energy Physics - Phenomenology · Physics 2010-04-05 J. H. Kuhn , A. Kulesza , S. Pozzorini , M. Schulze

At the Large Hadron Collider (LHC) it will become possible for the first time to investigate experimentally the forward region in hadron-hadron collisions via high-$p_T$ processes. In the LHC forward kinematics QCD logarithmic corrections…

High Energy Physics - Phenomenology · Physics 2009-11-05 M. Deak , F. Hautmann , H. Jung , K. Kutak

We discuss high-pT production processes at forward rapidities in hadron-hadron collisions, and describe recent results from using QCD high-energy factorization in forward jet production at the LHC.

High Energy Physics - Phenomenology · Physics 2014-11-20 F. Hautmann

We present the computation of next-to-leading order (NLO) QCD corrections to di-photon production in association with two or three hard jets in pp collisions at a center-of-mass energy of 8 TeV. The inclusion of NLO corrections is shown to…

High Energy Physics - Phenomenology · Physics 2015-06-18 Simon Badger , Alberto Guffanti , Valery Yundin

We set up a formalism, within the antenna subtraction framework, for computing the production of a massive quark-antiquark pair in electron positron collisions at next-to-next-to-leading order in the coupling $\alpha_s$ of quantum…

High Energy Physics - Phenomenology · Physics 2017-02-01 Long Chen , Oliver Dekkers , Dennis Heisler , Werner Bernreuther , Zong-Guo Si

In these proceedings, we summarise the results of the recent calculation of the NNLO QCD corrections for the production of a top-quark pair in association with a bottom-flavoured hadron. The results consist of differential distributions of…

High Energy Physics - Phenomenology · Physics 2021-12-24 Terry Generet

Weak corrections for top-quark pair production at hadron colliders are revisited. Predictions for collider energies of 8 TeV, adopted to the recent LHC run, and for 13 as well as 14 TeV, presumably relevant for the next round of LHC…

High Energy Physics - Phenomenology · Physics 2015-02-27 J. H. Kühn , A. Scharf , P. Uwer

The purpose of this note is to give the one loop radiative corrections to the top quark pair production in the $p\bar{p}$ annihilation at the Fermilab Tevatron in the context of the Minimal Supersymmetric Model. We concentrate here on the…

High Energy Physics - Phenomenology · Physics 2008-11-26 S. Alam , K. Hagiwara , S. Matsumoto

We compute QCD radiative corrections to the continuum production of a pair of Z-bosons in the annihilation of two gluons. We only consider the contribution of the top quark loops and we treat them assuming that $m_t$ is much larger than any…

High Energy Physics - Phenomenology · Physics 2015-06-24 Kirill Melnikov , Matthew Dowling

The two-loop QCD corrections to vector boson pair production at hadron colliders involve a new class of Feynman integrals: two-loop four-point functions with two off-shell external legs. We describe their reduction to a small set of master…

High Energy Physics - Phenomenology · Physics 2013-08-26 Thomas Gehrmann , Lorenzo Tancredi , Erich Weihs

Electroweak one-loop calculations for production of top-quark pairs at colliders are completed by providing the missing QED type contributions from real and virtual photons, where also effects from interference between QED and QCD…

High Energy Physics - Phenomenology · Physics 2008-11-26 Wolfgang Hollik , Monika Kollar

We compute total cross sections for various slepton pair production reactions in next-to-leading order QCD. For pbarp collisions at root S=2TeV, we find leading order cross sections to be enhanced by typically 35% to 40%. For pp collisions…

High Energy Physics - Phenomenology · Physics 2009-10-30 Howard Baer , B. W. Harris , Mary Hall Reno

Results from inclusive and differential measurements of the production cross sections for top quarks in proton-proton collisions at center-of-mass energies of 7 and 8 TeV are compared to predictions at next-to-leading and…

High Energy Physics - Experiment · Physics 2019-08-14 Sebastian Naumann-Emme

We calculate the one-loop squared contributions to the next-to-next-to-leading order ${\cal O}(\alpha^2\alpha_s^2)$ radiative QCD corrections for the production of heavy quark pairs in the collisions of unpolarized on--shell photons. In…

High Energy Physics - Phenomenology · Physics 2008-11-26 J. G. Korner , Z. Merebashvili , M. Rogal

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…

High Energy Physics - Phenomenology · Physics 2018-07-25 Aude Gehrmann-De Ridder , Thomas Gehrmann , Nigel Glover , Alexander Huss , Duncan Walker

We present the next-to-leading-order (NLO) QCD corrections to the inclusive total cross section for the production of a Higgs boson in association with a top anti-top quark pair within the Standard Model at the Tevatron and the LHC.

High Energy Physics - Phenomenology · Physics 2009-11-07 S. Dawson , L. H. Orr , L. Reina , D. Wackeroth