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We study bound-state effects on the t\bar{t} production cross section in the threshold region at hadron colliders. The bound-state effects are important particularly at the LHC where the gluon fusion is the dominant subprocess. Due to the…

High Energy Physics - Phenomenology · Physics 2009-09-17 Kaoru Hagiwara , Yukinari Sumino , Hiroshi Yokoya

We provide an update on QCD predictions for top-quark pair production close to threshold including bound state effects at the Large Hadron Collider. We compute the top-quark pair invariant mass distribution $d\sigma/dM_{t\bar{t}}$,…

High Energy Physics - Phenomenology · Physics 2025-05-19 M. V. Garzelli , G. Limatola , S. -O. Moch , M. Steinhauser , O. Zenaiev

We study bound-state effects on the pair production of gluinos at hadron colliders, in a context of the minimal supersymmetric extension of the standard model. Due to the expected large mass and the octet color-charge of gluinos, the…

High Energy Physics - Phenomenology · Physics 2009-12-07 Kaoru Hagiwara , Hiroshi Yokoya

Production cross sections for t\bar{t} and t\bar{t}j events at hadron colliders are calculated, including finite width effects and off resonance contributions for the entire decay chain, t --> bW --> b\ell\nu, for both top quarks. Resulting…

High Energy Physics - Phenomenology · Physics 2009-11-07 N. Kauer , D. Zeppenfeld

The production of top-antitop-quark pairs at hadron colliders is interesting both in its own right as signal process, but also as background to many searches for new physics. The corresponding predictions aim at the precision level of few…

High Energy Physics - Phenomenology · Physics 2012-08-21 Ansgar Denner , Stefan Dittmaier , Stefan Kallweit , Stefano Pozzorini

Precision predictions for phenomenologically interesting observables such as the t-tbar invariant mass distribution and forward-backward asymmetry in top-quark pair production at hadron colliders require control over the differential cross…

High Energy Physics - Phenomenology · Physics 2015-03-13 Valentin Ahrens , Andrea Ferroglia , Matthias Neubert , Ben D. Pecjak , Li Lin Yang

A calculation of the total cross section for top quark production in hadron-hadron collisions is presented based on an all-orders perturbative resummation of initial-state gluon radiative contributions to the basic quantum chromodynamics…

High Energy Physics - Phenomenology · Physics 2008-02-03 Edmond L. Berger , Harry Contopanagos

We discuss top-quark pair production at hadron colliders and review available calculations of differential top-pair production cross section in perturbative QCD at approximate next-to-next-to-leading order (NNLO) within the threshold…

High Energy Physics - Phenomenology · Physics 2013-08-08 Marco Guzzi , Katerina Lipka , Sven-Olaf Moch

We review the physics involved in the production and decay of top quarks in e^+e^- -> ttbar near threshold, with special emphasis on the recent theoretical study on the decay process of top quarks in the threshold region. The energy-angular…

High Energy Physics - Phenomenology · Physics 2011-03-02 Y. Sumino

We present results of phenomenological studies for top-quark pair production at the LHC at the center of mass energy $\sqrt{S} = 7$ TeV. The transverse momentum and rapidity distributions for final-state top quarks are calculated in…

High Energy Physics - Phenomenology · Physics 2014-09-02 Marco Guzzi , Katerina Lipka , Sven-Olaf Moch

In this paper, I study final state QCD radiative corrections to off-shell single top production via decaying $W$ at hadron collider energies. The tree level Breit-Wigner distribution of the produced top invariant mass is distorted by final…

High Energy Physics - Phenomenology · Physics 2009-10-28 R. Pittau

The status of theoretical predictions for top-quark pair production at hadron colliders is reviewed, focusing on the total cross section, differential distributions, and the description of top-quark production and decay including off-shell…

High Energy Physics - Phenomenology · Physics 2018-10-12 Christian Schwinn

In ongoing and upcoming hadron collider experiments, top quark physics will play an important role in testing the Standard Model and its possible extensions. In this work we present analytic results for the differential cross sections of…

High Energy Physics - Phenomenology · Physics 2011-05-05 W. Bernreuther , A. Brandenburg , Z. G. Si , P. Uwer

We study the impact of the top quark mass renormalized in the $\overline{\text{MS}}$ scheme on the $\text{t}\bar{\text{t}}\text{H}$ production cross-sections as an alternative to theory predictions with the conventionally used pole mass…

High Energy Physics - Phenomenology · Physics 2022-06-01 Maria Aldaya Martin , Sven-Olaf Moch , Andrej Saibel

We summarize calculations of the cross section for top quark production at hadron colliders within the context of perturbative quantum chromodynamics, including resummation of the effects of initial-state soft gluon radiation to all orders…

High Energy Physics - Phenomenology · Physics 2007-05-23 Edmond L. Berger , Harry Contopanagos

We present details of a calculation of the cross section for hadronic top-antitop production in next-to-leading order (NLO) QCD, including the decays of the top and antitop into bottom quarks and leptons. This calculation is based on matrix…

High Energy Physics - Phenomenology · Physics 2012-11-07 Ansgar Denner , Stefan Dittmaier , Stefan Kallweit , Stefano Pozzorini

The effects of the finite top quark width in the top pair production cross section close to the threshold are discussed in this talk. We introduce a $t\bar{t}$ cross section with a cut on the invariant masses of the top and antitop that can…

High Energy Physics - Phenomenology · Physics 2009-04-30 Andre H. Hoang , Christoph J. Reisser , Pedro Ruiz-Femenia

We report on recent calculations of the differential cross section for top-quark pair production at hadron colliders. The results are differential with respect to the top-pair invariant mass and to the partonic scattering angle. In these…

High Energy Physics - Phenomenology · Physics 2010-12-13 V. Ahrens , A. Ferroglia , M. Neubert , B. D. Pecjak , L. L. Yang

The impact of the finite top-quark mass on the inclusive Higgs production cross section at higher perturbative orders has been an open question for almost three decades. In this paper, we report on the computation of this effect at NNLO…

High Energy Physics - Phenomenology · Physics 2023-09-29 M. Czakon , R. V. Harlander , J. Klappert , M. Niggetiedt

We present results at NLO QCD for hadronic production and decay of top quark pairs, taking into account t tbar spin correlations.

High Energy Physics - Phenomenology · Physics 2009-11-07 W. Bernreuther , A. Brandenburg , Z. G. Si , P. Uwer
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