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We analyse subleading electroweak effects in the top anti-top resonance production region in e+ e- collisions which arise due to the decay of the top and anti-top quarks into the W+ W- b bbar final state. These are NLO corrections adopting…

High Energy Physics - Phenomenology · Physics 2010-08-24 M. Beneke , B. Jantzen , P. Ruiz-Femenia

We revisit inclusive J/psi and Upsilon photoproduction at lepton-hadron colliders, namely in the limit when the exchanged photon is quasi real. Our computation includes the next-to-leading-order (NLO) alpha_s corrections to the…

High Energy Physics - Phenomenology · Physics 2023-02-03 Alice Colpani Serri , Yu Feng , Carlo Flore , Jean-Philippe Lansberg , Melih A. Ozcelik , Hua-Sheng Shao , Yelyzaveta Yedelkina

We perform the precision calculations for the \eeqq ($q_-\bar{q}_-=u_-\bar u_-, ~c_-\bar c_-,~ d_-\bar d_-,~s_-\bar s_-$) processes up to the QCD next-to-leading order (NLO) including full weak decays for the final $T$-odd mirror quarks in…

High Energy Physics - Phenomenology · Physics 2015-02-11 A. B. Mahfoudh , Guo Lei , Liu Wen , Ma Wen-Gan , Zhang Ren-You , Zhang Wen-Juan

We consider the effect of next-to-leading order (NLO) electroweak corrections to Standard Model 2-to-2 processes, taking into account the potentially large double logarithms originating from both real and virtual corrections. A study of the…

High Energy Physics - Phenomenology · Physics 2013-05-22 W. J. Stirling , E. Vryonidou

We propose an implementation of ZZ, ZZj and ZZjj productions in MadGraph5_aMC@NLO framework at $\sqrt{s}$ = 14 TeV. We calculate these processes at leading order and next-to-leading order with QCD corrections and we present a theoretical…

High Energy Physics - Phenomenology · Physics 2020-12-09 K. Djamaa , A. Mohamed-Meziani

We report on a recent calculation of the full next-to-leading-order electroweak corrections to Z-boson pair production with subsequent decays into four charged leptons. Using the complete matrix elements at leading order and next-to-leading…

High Energy Physics - Phenomenology · Physics 2017-07-05 Benedikt Biedermann

As experimental particle physics becomes more and more precise, it is becoming increasingly important for Monte Carlo simulations to improve the precision of their predictions. In terms of the hard matrix element, this means calculating to…

High Energy Physics - Phenomenology · Physics 2016-07-01 Jennifer M Thompson

Threshold enhanced perturbative QCD corrections to rapidity distributions of $Z$ and $W^\pm$ bosons at hadron colliders are presented using the Sudakov resummed cross sections at N${}^3$LO level. We have used renormalisation group…

High Energy Physics - Phenomenology · Physics 2008-11-26 V. Ravindran , J. Smith

The choice of an electroweak (EW) input scheme is an important component of perturbative calculations in Standard Model Effective Field Theory (SMEFT). In this paper we perform a systematic study of three different EW input schemes in…

High Energy Physics - Phenomenology · Physics 2023-08-02 Anke Biekötter , Benjamin D. Pecjak , Darren J. Scott , Tommy Smith

In these proceedings we discuss next-to-leading order (NLO) perturbative-QCD calculations of the cross section for the process $\ell N\to h X$. We briefly present the main features of the calculation and in particular analyze the role of…

High Energy Physics - Phenomenology · Physics 2015-10-27 Marc Schlegel , Patriz Hinderer , Werner Vogelsang

In this paper we present the first application of the MiNLO method to the calculation of QED NLO corrections to the production of a neutral vector boson in Drell-Yan processes. We consider only the case of initial-state radiation, when the…

High Energy Physics - Phenomenology · Physics 2026-02-19 Filippo Belloni , Mauro Chiesa , Carlo Oleari , Emanuele Re

We present NLOAccess, an online platform acting as a virtual access to automated perturbative computations of physical observables related to collider physics within collinear factorisation. We discuss the design of the project and…

High Energy Physics - Phenomenology · Physics 2023-03-17 Carlo Flore

The semi-inclusive deep-inelastic scattering (SIDIS) process requires the presence of an identified hadron H$'$ in the final state, which arises from the scattering of a lepton with an initial hadron P. By employing factorization in quantum…

High Energy Physics - Phenomenology · Physics 2025-11-03 Saurav Goyal , Roman N. Lee , Sven-Olaf Moch , Vaibhav Pathak , Narayan Rana , V. Ravindran

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

We summarize the status of calculations of the electroweak radiative corrections to W and Z boson production via the Drell-Yan mechanism at hadron colliders. To fully exploit the precision physics potential of the high-luminosity…

High Energy Physics - Phenomenology · Physics 2009-11-07 U. Baur , D. Wackeroth

We use the known soft and collinear limits of tree- and one-loop scattering amplitudes -- computed over a decade ago -- to explicitly construct a subtraction scheme for next-to-next-to-leading order (NNLO) computations. Our approach…

High Energy Physics - Phenomenology · Physics 2015-06-03 Radja Boughezal , Kirill Melnikov , Frank Petriello

We present an event-file format for the dissemination of next-to-leading-order (NLO) predictions for QCD processes at hadron colliders. The files contain all information required to compute generic jet-based infrared-safe observables at…

High Energy Physics - Phenomenology · Physics 2015-06-17 Z. Bern , L. J. Dixon , F. Febres Cordero , S. Hoeche , H. Ita , D. A. Kosower , D. Maitre

We present novel predictions for the production of $W^+W^-$ pairs in hadron collisions that are next-to-next-to-leading order accurate and consistently matched to a parton shower (NNLOPS). All diagrams that lead to the process $pp\to e^-…

High Energy Physics - Phenomenology · Physics 2019-01-30 Emanuele Re , Marius Wiesemann , Giulia Zanderighi

We present a study at next-to-leading-order (NLO) of the process $pp \to W^\pm Z \to \ell \nu_l \ell'^+ \ell'^-$, where $\ell,\ell' =e, \mu$, at the Large Hadron Collider. We include the full NLO QCD corrections and the NLO electroweak (EW)…

High Energy Physics - Phenomenology · Physics 2019-04-16 Julien Baglio , LE Duc Ninh

We present analytic results for electroweak precision observables (EWPO) at next-to-leading order (NLO) in dimension-six SMEFT, with no assumptions on the flavour structure of SMEFT Wilson coefficients. The results are given in five…

High Energy Physics - Phenomenology · Physics 2025-03-12 Anke Biekötter , Benjamin D. Pecjak
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