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We compute the Next-to-Next-to-Leading Order (NNLO) QCD corrections to the partonic reaction that dominates top-pair production at the Tevatron. This is the first ever NNLO calculation of an observable with more than two colored partons,…

高能物理 - 唯象学 · 物理学 2013-05-30 Peter Baernreuther , Michal Czakon , Alexander Mitov

Radiative corrections in pole approximation, which are based on the leading contribution in a systematic expansion of amplitudes about resonance poles, naturally decompose into factorizable corrections attributed to the production or decay…

高能物理 - 唯象学 · 物理学 2024-05-07 Stefan Dittmaier , Alexander Huss , Jan Schwarz

Motivated by ongoing new physics searches in the top-quark sector at the Large Hadron Collider we report on the calculation of NLO QCD corrections to the Standard Model $pp\to t\bar{t}Z+X$ process in the tetra-lepton decay channel. This…

高能物理 - 唯象学 · 物理学 2022-08-09 Giuseppe Bevilacqua , Heribertus Bayu Hartanto , Manfred Kraus , Jasmina Nasufi , Malgorzata Worek

In this thesis, we present automated, process-independent methods for the calculation of QED real radiative corrections. We review the construction of a parton shower based on Catani-Seymour dipole subtraction, and thus detail the…

高能物理 - 唯象学 · 物理学 2024-09-05 Lois Flower

We calculate the one-loop electroweak corrections to e+e- to WWZ and e+e- to ZZZ and analyse their impacts on both the total cross section and some key distributions. These processes are important for the measurements of the quartic…

高能物理 - 唯象学 · 物理学 2010-04-27 Fawzi Boudjema , Le Duc Ninh , Sun Hao , Marcus M. Weber

We briefly report on the inclusion of NLO QCD and electroweak corrections to the Higgs-strahlung processes pp/ppbar -> HW/Z -> H+2leptons in the Monte Carlo program HAWK. The electroweak corrections, which are at the level of -(5-10)% for…

高能物理 - 唯象学 · 物理学 2011-12-23 Ansgar Denner , Stefan Dittmaier , Stefan Kallweit , Alexander Muck

We present predictions for $t \bar t$ and $t \bar t H$ production and decay at future lepton colliders including non-resonant and interference contributions up to next-to-leading order (NLO) in perturbative QCD. The obtained precision…

高能物理 - 唯象学 · 物理学 2017-01-03 Bijan Chokoufé Nejad , Wolfgang Kilian , Jonas M. Lindert , Stefano Pozzorini , Jürgen Reuter , Christian Weiss

The computation of the NLO-QCD corrections to the cross sections for W \gamma \gamma production in hadronic collisions is presented. We consider the case of real photons in the final state, but include full leptonic decays of the W.…

高能物理 - 唯象学 · 物理学 2011-07-05 G. Bozzi , F. Campanario , M. Rauch , D. Zeppenfeld

We present the calculations of the complete next-to-leading order (NLO) QCD effects on the single top productions induced by model-independent $tqg$ flavor-changing neutral-current couplings at hadron colliders. Our results show that, for…

高能物理 - 唯象学 · 物理学 2009-12-31 Jun Gao , Chong Sheng Li , Jia Jun Zhang , Hua Xing Zhu

Triboson production processes play a crucial role in probing the electroweak sector of the Standard Model, as they involve quartic gauge-boson couplings already at the tree level. With these measurements entering the precision era at the…

高能物理 - 唯象学 · 物理学 2025-11-26 Paolo Garbarino , Massimiliano Grazzini , Stefan Kallweit , Chiara Savoini

Compton scattering is a fundamental process in QED with broad applications, yet its theoretical description at high energies is challenged by substantial next-to-leading order (NLO) corrections arising from double-logarithmic enhancements.…

高能物理 - 唯象学 · 物理学 2025-11-13 Hai Tao Li , Yan-Qing Ma , Cheng-Tai Tan , Jian Wang , Hong-Fei Zhang

We present an NNLO-compatible subtraction scheme for computing QCD jet cross sections of hadron-initiated processes at NLO accuracy. The scheme is constructed specifically with those complications in mind, that emerge when extending the…

高能物理 - 唯象学 · 物理学 2009-12-04 Gabor Somogyi

Top-antitop quark pairs belong to the most abundantly produced and precisely measurable heavy-particle signatures at hadron colliders and allow for crucial tests of the Standard Model and new-physics searches. Here we report on the…

高能物理 - 唯象学 · 物理学 2011-06-22 A. Denner , S. Dittmaier , S. Kallweit , S. Pozzorini

Single slepton production in association with a top quark at the CERN Large Hadron Collider (LHC) is one of the important processes in probing the R-parity violation couplings. We calculate the QCD next-to-leading order (NLO) corrections to…

高能物理 - 唯象学 · 物理学 2012-03-29 Li Xiao-Peng , Guo Lei , Ma Wen-Gan , Han Liang , Zhang Ren-You , Wang Shao-Ming

We present the full next-to-leading order (NLO) corrected inclusive cross section for massive lepton pair production in longitudinally polarized proton-proton collisions. All QCD partonic subprocesses have been included provided the lepton…

高能物理 - 唯象学 · 物理学 2009-11-07 W. L. van Neerven

We present FMNLO, a framework to combine general-purpose Monte Carlo generators and fragmentation functions (FFs). It is based on a hybrid scheme of phase-space slicing method and local subtraction method, and accurate to next-to-leading…

高能物理 - 唯象学 · 物理学 2024-01-09 ChongYang Liu , XiaoMin Shen , Bin Zhou , Jun Gao

The VBFNLO program package is a collection of Monte Carlo programs for the calculation of NLO QCD corrections to vector boson fusion cross sections, double and triple vector boson production, or the production of two electroweak bosons in…

高能物理 - 唯象学 · 物理学 2011-02-18 Dieter Zeppenfeld , G. Bozzi , F. Campanario , C. Englert , V. Hankele , S. Platzer , B. Jager , C. Oleari , M. Spannowsky , M. Worek

In this paper we present the first study of the impact of the $\mathcal{O}(\alpha)$ EW correction to the $pp \to ZZ \gamma+X$ process at the CERN Large Hadron Collider (LHC). The subsequent $Z$-boson leptonic decays are considered at the…

高能物理 - 唯象学 · 物理学 2017-08-02 Wang Yong , Zhang Ren-You , Ma Wen-Gan , Li Xiao-Zhou , Wang Shao-Ming , Bi Huan-Yu

Electroweak corrections to hadron collider processes become relevant at the level of precision reached by present-day LHC experiments. We provide a preliminary discussion of the impact of electroweak corrections to parton distributions,…

高能物理 - 唯象学 · 物理学 2013-11-12 Stefano Carrazza

We study QCD corrections for the associated production of a single top quark and a photon ($tq\gamma$ production) at hadron colliders. We calculate the NLO cross section at LHC and future collider energies for a variety of kinematical cuts,…

高能物理 - 唯象学 · 物理学 2022-08-08 Nikolaos Kidonakis , Nodoka Yamanaka