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I report on a formalism introduced recently to combine parton shower Monte Carlo's and next-to-leading order QCD computations.

高能物理 - 唯象学 · 物理学 2007-05-23 S. Frixione

An earlier developed $k_T$-factorization framework to calculate the associated prompt photon and hadronic jets production cross sections at high energies is extended now to the electron-proton deep inelastic scattering. The proposed method…

高能物理 - 唯象学 · 物理学 2023-08-02 A. V. Lipatov , M. A. Malyshev

We present the matching of the next-to-leading order QCD calculation for W+W+jj production via vector-boson fusion in hadronic collisions to parton-shower Monte-Carlo programs according to the POWHEG method. Our implementation complements…

高能物理 - 唯象学 · 物理学 2015-05-30 Barbara Jager , Giulia Zanderighi

We review the methods developed for combining the parton shower approximation to QCD with fixed-order perturbation theory, in such a way as to achieve next-to-leading-order (NLO) accuracy for inclusive observables. This has made it possible…

高能物理 - 唯象学 · 物理学 2015-06-04 Paolo Nason , Bryan Webber

We study the mismatch between a full calculation of non-global single-logarithms in the large-N_c limit and an approximation based on free azimuthal averaging, and the consequent angular-ordered pattern of soft gluon radiation in QCD. We…

高能物理 - 唯象学 · 物理学 2010-10-27 Andrea Banfi , Gennaro Corcella , Mrinal Dasgupta

In this paper we present an algorithm to add photon-splitting corrections to the Yennie-Frautschi-Suura-style soft-photon resummation available in the Sherpa Monte-Carlo event generator. Photon-splitting corrections enter at NNLO in QED…

高能物理 - 唯象学 · 物理学 2023-03-31 Lois Flower , Marek Schoenherr

The aim of this work is to describe in detail the POWHEG method, first suggested by one of the authors, for interfacing parton-shower generators with NLO QCD computations. We describe the method in its full generality, and then specify its…

高能物理 - 唯象学 · 物理学 2009-11-13 Stefano Frixione , Paolo Nason , Carlo Oleari

In this short review we discuss two implementations of the charged Higgs boson production process in association with a top quark in Monte Carlo event generators at next-to-leading order in QCD. We introduce the MC@NLO and the POWHEG method…

高能物理 - 唯象学 · 物理学 2014-12-19 K. Kovarik

We present an implementation of electroweak W+W-jj production at hadron colliders in the POWHEG framework, a method that allows the interfacing of a next-to-leading order QCD calculation with parton shower Monte Carlo programs. We provide…

高能物理 - 唯象学 · 物理学 2015-06-12 Barbara Jager , Giulia Zanderighi

We present a new calculation for the production of isolated photon pairs at the LHC with NNLL$'_{\mathcal{T}_0}$+NNLO accuracy. This is the first implementation within the GENEVA Monte Carlo framework of a process with a nontrivial…

We have implemented a systematic procedure for combining parton shower algorithms with next-to-leading order QCD calculations for the case of jet production in deep-inelastic electron-proton scattering. Using this method we have computed…

高能物理 - 唯象学 · 物理学 2009-11-07 B. Pötter , T. Schörner

The implementation of QED initial-state radiative corrections in the process of four-fermion production at LEP200 and higher-energy e+e- colliders is discussed. Because of the presence of charged-current processes, this is a nontrivial…

高能物理 - 唯象学 · 物理学 2009-10-28 F. A. Berends , R. Pittau , R. Kleiss

In this article we present an event generator based on the Monte Carlo program Powheg in combination with the matrix-element generator Recola. We apply it to compute NLO electroweak corrections to same-sign W-boson scattering, which have…

高能物理 - 唯象学 · 物理学 2020-02-19 Mauro Chiesa , Ansgar Denner , Jean-Nicolas Lang , Mathieu Pellen

We report on a method for matching the next-to-leading order calculation of QCD jet production in e+e- annihilation with a Monte Carlo parton shower event generator (MC) to produce realistic final states. The final result is accurate to…

高能物理 - 唯象学 · 物理学 2008-11-26 Michael Krämer , Stephen Mrenna , Davison E. Soper

A next step in development of the KrkNLO method of including complete NLO QCD corrections to hard processes in a LO parton-shower Monte Carlo (PSMC) is presented. It consists of generalisation of the method, previously used for the…

高能物理 - 唯象学 · 物理学 2016-12-21 S. Jadach , W. Placzek , S. Sapeta , A. Siodmok , M. Skrzypek

We present an implementation of the full electroweak $H+2~\text{jets}$ production process at hadron colliders in the framework of the $\tt{POWHEG~BOX}$, a public tool for the matching of fixed-order perturbative calculations with parton…

高能物理 - 唯象学 · 物理学 2022-11-04 Barbara Jäger , Johannes Scheller

We present a fully automated framework based on the FeynRules and MadGraph5 aMC@NLO programs that allows for accurate simulations of supersymmetric QCD processes at the LHC. Starting directly from a model Lagrangian that features squark and…

高能物理 - 唯象学 · 物理学 2016-02-23 Celine Degrande , Benjamin Fuks , Valentin Hirschi , Josselin Proudom , Hua-Sheng Shao

The precision study of $W^-W^+H$ production with subsequent $W^{\pm} \rightarrow l^{\pm} \overset{ _{(-)}}{\nu_{l}}$ and $H \rightarrow b\bar{b}$ decays at the LHC can help us to study the Higgs gauge couplings and to search for new physics…

高能物理 - 唯象学 · 物理学 2020-05-22 Huan-Yu Bi , Ren-You Zhang , Wen-Gan Ma , Yi Jiang , Xiao-Zhou Li , Peng-Fei Duan

Comparisons of experimental data with theoretical predictions for collider processes containing hadronic jets rely on shower Monte Carlo event generators to include corrections to perturbative calculations from hadronization, parton…

高能物理 - 唯象学 · 物理学 2013-05-15 S. Dooling , P. Gunnellini , F. Hautmann , H. Jung

We extend the GENEVA Monte Carlo framework using the transverse momentum of a colour-singlet system as the resolution variable. This allows us to use next-to-next-to-next-to leading logarithm (N$^3$LL) resummation via the \radish formalism…