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相关论文: Automating Predictions for Standard Model Effectiv…

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Predictions for the Standard Model Effective Field Theory at the next-to-leading order accuracy in QCD, including parton-shower effects, have started to become available in the MadGraph5_aMC@NLO framework. In this talk we summarize some…

高能物理 - 唯象学 · 物理学 2016-11-17 Cen Zhang

An important area of high energy physics studies at the Large Hadron Collider (LHC) currently concerns the need for more extensive and precise comparison data. Important tools in this realm are event reweighing and evaluation of more…

Computations at next-to-leading order in the Standard Model offer new technical challenges in presence of higher dimensional operators. We introduce a framework that, starting from the top-quark effective field theory at dimension six,…

高能物理 - 唯象学 · 物理学 2015-03-05 Celine Degrande , Fabio Maltoni , Jian Wang , Cen Zhang

As the quality of experimental measurements increases, so does the need for Monte Carlo-generated simulated events - both with respect to the total amount and to their precision. In perturbative methods, this involves the evaluation of…

高能物理 - 唯象学 · 物理学 2025-03-11 Zenny Wettersten , Olivier Mattelaer , Stefan Roiser , Andrea Valassi , Marco Zaro

We present for the first time the full automation of collider predictions matched with parton showers at the next-to-leading accuracy in QCD within non-trivial extensions of the Standard Model. The sole inputs required from the user are the…

高能物理 - 唯象学 · 物理学 2015-05-13 Céline Degrande , Benjamin Fuks , Valentin Hirschi , Josselin Proudom , Hua-Sheng Shao

We discuss the theoretical bases that underpin the automation of the computations of tree-level and next-to-leading order cross sections, of their matching to parton shower simulations, and of the merging of matched samples that differ by…

高能物理 - 唯象学 · 物理学 2015-06-19 J. Alwall , R. Frederix , S. Frixione , V. Hirschi , F. Maltoni , O. Mattelaer , H. -S. Shao , T. Stelzer , P. Torrielli , M. Zaro

The MadGraph5 aMC@NLO framework aims to automate all types of leading- and next-to-leading-order-accurate simulations for any user-defined model that stems from a renormalisable Lagrangian. In this paper, we present all of the key…

We detail the implementation of a multi-event interface for next-to-leading order (NLO) calculations in MadGraph5_aMC@NLO, allowing tree-level scattering amplitudes for multiple phase space points to be evaluated in each call to the…

高能物理 - 唯象学 · 物理学 2026-02-11 Rikkert Frederix , Stefan Roiser , Robert Schöfbeck , Zenny Wettersten , Marco Zaro

We present automated next-to-leading order QCD and/or electroweak (EW) predictions for photon-photon processes in ultraperipheral high-energy collisions of protons and ions, extending the capabilities of the MadGraph5_aMC@NLO framework…

高能物理 - 唯象学 · 物理学 2025-07-03 Hua-Sheng Shao , Lukas Simon

We present an extension of the MadGraph5_aMC@NLO framework that enables the automated calculation of leading-order cross sections for S-wave quarkonium and leptonium production within the non-relativistic QCD (NRQCD) and non-relativistic…

高能物理 - 唯象学 · 物理学 2026-03-03 Alice Colpani Serri , Chris A. Flett , Jean-Philippe Lansberg , Olivier Mattelaer , Hua-Sheng Shao , Lukas Simon

I review recent progress in the computation of processes involving top quarks in the framework of Standard Model Effective Theory at NLO in QCD. In particular I discuss the impact of higher-dimensional operators on top pair production in…

高能物理 - 唯象学 · 物理学 2016-12-01 Eleni Vryonidou

This dissertation addresses a topic that I have worked on over the past decade: the automation of next-to-leading order electroweak corrections in the Standard Model of particle physics. After introducing the basic concepts and techniques…

高能物理 - 唯象学 · 物理学 2025-01-17 Hua-Sheng Shao

We present the first fully automated implementation of cross-section computation and event generation for loop-induced processes. This work is integrated in the MadGraph5_aMC@NLO framework. We describe the optimisations implemented at the…

高能物理 - 唯象学 · 物理学 2015-10-01 Valentin Hirschi , Olivier Mattelaer

With the LHC close to complete its 8 TeV run, the experimental searches have already started to probe the vast beyond-the-standard Model scenery. Providing next-to-leading order (NLO) predictions for the major new physics discovery channels…

高能物理 - 唯象学 · 物理学 2014-05-30 David Lopez-Val , Dorival Goncalves , Kentarou Mawatari , Tilman Plehn , Ioan Wigmore

We present the key features relevant to the automated computation of all the leading- and next-to-leading order contributions to short-distance cross sections in a mixed-coupling expansion, with special emphasis on the first subleading NLO…

高能物理 - 唯象学 · 物理学 2021-10-22 R. Frederix , S. Frixione , V. Hirschi , D. Pagani , H. -S. Shao , M. Zaro

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

Top quark pair production in association with a $Z$-boson or a photon at the LHC directly probes neutral top-quark couplings. We present predictions for these two processes in the Standard Model (SM) Effective Field Theory (EFT) at…

高能物理 - 唯象学 · 物理学 2016-02-01 Olga Bessidskaia Bylund , Fabio Maltoni , Ioannis Tsinikos , Eleni Vryonidou , Cen Zhang

MadGraph5_aMC@NLO is a software package that allows one to simulate processes of arbitrary complexity, at both the leading and the next-to-leading order perturbative accuracy, with or without matching and multi-jet merging to parton…

高能物理 - 唯象学 · 物理学 2021-08-24 Stefano Frixione , Olivier Mattelaer , Marco Zaro , Xiaoran Zhao

Heading towards a full automation of next-to-leading order (NLO) QCD corrections, one important ingredient is the analytical integration over the one-particle phase space of the unresolved particle that is necessary when adding the…

高能物理 - 唯象学 · 物理学 2015-03-14 Rikkert Frederix , Thomas Gehrmann , Nicolas Greiner

We explore various aspects of top quark phenomenology at the Large Hadron Collider and proposed future machines. After summarising the role of the top quark in the Standard Model (and some of its well-known extensions), we discuss the…

高能物理 - 唯象学 · 物理学 2018-02-01 Michael Russell
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