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Power corrections to differential cross sections near a kinematic threshold are analysed by Dressed Gluon Exponentiation. Exploiting the factorization property of soft and collinear radiation, the dominant radiative corrections in the…

高能物理 - 唯象学 · 物理学 2017-08-23 Einan Gardi

I present theoretical calculations of $t{\bar t}$ production cross sections through aN$^3$LO in proton-proton collisions. I show that soft-gluon corrections dominate the perturbative expansion not only for LHC energies but also for future…

高能物理 - 唯象学 · 物理学 2022-03-09 Nikolaos Kidonakis

The cross section of top pair production in hadronic collisions to O(alpha \alpha_s^2) is calculated within the General 2-Higgs-Doublet Model and the Minimal Supersymmetric Standard Model. At the parton level the O(alpha) one-loop…

高能物理 - 唯象学 · 物理学 2008-11-26 W. Hollik , W. M. Moesle , D. Wackeroth

I present results for single-top and top-pair production at the LHC and the Tevatron. Higher-order two-loop corrections are used to achieve NNLL resummation, which is then used to derive NNLO soft-gluon corrections. Results are presented…

高能物理 - 唯象学 · 物理学 2012-12-13 Nikolaos Kidonakis

The high accuracy envisaged for future measurements of W-boson production at hadron colliders has to be matched by precise theoretical predictions. We study the impact of electroweak radiative corrections on W-boson production cross…

高能物理 - 唯象学 · 物理学 2008-11-26 Silja Brensing , Stefan Dittmaier , Michael Krämer , Alexander Mück

We calculate the full ${\cal O}(\alpha_{ew})$ electroweak corrections to the Higgs pair production process $e^+ e^- \to H H Z$ at an electron-positron linear collider in the standard model, and analyze the dependence of the Born cross…

高能物理 - 唯象学 · 物理学 2015-06-25 Zhang Ren-You , Ma Wen-Gan , Chen Hui , Sun Yan-Bin , Hou Hong-Sheng

We have calculated the complete O(alpha) and O(alpha_s) radiative corrections to the Higgs-production process e+ e- -> t anti-t H in the Standard Model. This process is particularly interesting for the measurement of the top-quark Yukawa…

高能物理 - 唯象学 · 物理学 2008-11-26 A. Denner , S. Dittmaier , M. Roth , M. M. Weber

Precise predictions for an $e^+e^-\rightarrow t\bar{t}$ cross section are presented at an energy region from 400 GeV to 800 GeV. Cross sections are estimated including the beam-polarization effects with full $\mathcal{O}(\alpha)$, and also…

高能物理 - 唯象学 · 物理学 2019-07-24 Junpei Fujimoto , Yoshimasa Kurihara , Nhi M. U. Quach

On the basis of pertubative QCD and the relativistic quark model we calculate relativistic corrections to the process of pair $J/\psi$ production in proton-proton collisions at LHC energy $\sqrt S=7$ TeV. Relativistic terms in the…

高能物理 - 唯象学 · 物理学 2013-05-30 A. P. Martynenko , A. M. Trunin

We calculate the electroweak corrections to the production of WWZ and ZZZ at the linear collider in the Standard Model. These processes are important for the extraction of the quartic couplings of the massive gauge bosons which can be a…

高能物理 - 唯象学 · 物理学 2015-05-18 Fawzi Boudjema , Le Duc Ninh , Sun Hao , Marcus M. Weber

We investigate one-loop weak corrections to the production cross section of two $b$-jets at Tevatron and Large Hadron Collider (LHC). We establish that they are small at inclusive level but dominant in exclusive observables that have a…

高能物理 - 唯象学 · 物理学 2009-11-10 E. Maina , S. Moretti , M. R. Nolten , D. A. Ross

Single top production processes at hadron colliders provide information on the relation between the top quark and the electroweak sector of the standard model. We compute the next-to-leading order QCD corrections to the three main…

高能物理 - 唯象学 · 物理学 2016-04-27 Cen Zhang

We apply the leading and sub-leading electroweak (EW) corrections to the Drell-Yan process of the neutralino pair production at proton-proton collision, in order to calculate the effects of the these corrections on the neutralino pair…

高能物理 - 唯象学 · 物理学 2013-07-16 A. I. Ahmadov , M. Demirci

Radiative corrections of strong and electroweak interactions are presented at next-to-leading order for the production of a Higgs boson plus two hard jets via weak interactions at the LHC. The calculation includes all weak-boson fusion and…

高能物理 - 唯象学 · 物理学 2008-11-26 M. Ciccolini , A. Denner , S. Dittmaier

The production of a neutral and a charged vector boson with subsequent decays into three charged leptons and a neutrino is a very important process for precision tests of the Standard Model of elementary particles and in searches for…

高能物理 - 唯象学 · 物理学 2017-10-25 Benedikt Biedermann , Ansgar Denner , Lars Hofer

We have calculated part of O(${\alpha}_{S}$) QCD radiative correction to the total cross-section of top's threshold production in $ e^{+}e^{-} \to t\bar t \to W^{-} b W^{+} \bar b$ reaction. We found out a curious fact: there is no…

高能物理 - 唯象学 · 物理学 2016-09-01 K. Melnikov , O. Yakovlev

The process pp -> top anti-top bottom anti-bottom + X represents a very important background reaction to searches at the LHC, in particular to top anti-top H production where the Higgs boson decays into a bottom anti-bottom pair. A…

高能物理 - 唯象学 · 物理学 2010-12-09 Axel Bredenstein , Ansgar Denner , Stefan Dittmaier , Stefano Pozzorini

We present predictions for the total cross sections for pair production of squarks and gluinos at the LHC including a combined NNLL resummation of soft and Coulomb gluon effects. The NNLL corrections can be up to 25% relative to previous…

高能物理 - 唯象学 · 物理学 2013-12-04 Martin Beneke , Pietro Falgari , Jan Piclum , Christian Schwinn , Christopher Wever

I present new results and updates for total cross sections and differential distributions in top-antitop pair and single-top production. Soft-gluon corrections are added to exact fixed-order results to provide the best predictions at…

高能物理 - 唯象学 · 物理学 2023-02-21 Nikolaos Kidonakis

We compute the next-to-next-to-leading order QCD correction to the total inclusive top pair production cross-section in the reaction qg \to t\bar t + X. We find moderate O(1%) correction to central values at both Tevatron and LHC. The scale…

高能物理 - 唯象学 · 物理学 2015-06-11 Michal Czakon , Alexander Mitov