Results 1 to 10 of about 1,070 (198)

Matching NLO QCD computations with PYTHIA using MC@NLO [PDF]

Journal of High Energy Physics, 2010
We present the matching between a next-to-leading order computation in QCD and the PYTHIA parton shower Monte Carlo, according to the MC@NLO formalism. We study the case of initial-state radiation, and consider in particular single vector boson hadroproduction.
Paolo Torrielli, Stefano Frixione, Frixione Stefano   +2 more
exaly   +5 more sources

aMCfast: automation of fast NLO computations for PDF fits [PDF]

Journal of High Energy Physics, 2014
36 pages, 10 ...
Valerio Bertone, Rikkert Frederix, Stefano Frixione   +2 more
exaly   +7 more sources

Matching NLO QCD computations and parton shower simulations [PDF]

Journal of High Energy Physics, 2002
69 pages Latex; 16 figures included.
Stefano Frixione, Bryan R Webber
exaly   +5 more sources

Matching parton showers to NLO computations [PDF]

Journal of High Energy Physics, 2005
45 pages, new introduction, more detailed discussion of the Sudakov ...
Davison E Soper
exaly   +4 more sources

Matching NLO QCD computations with parton shower simulations: the POWHEG method

Journal of High Energy Physics, 2007
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 features in two subtraction frameworks for NLO calculations: the Catani-Seymour and the Frixione-Kunszt-Signer ...
Stefano Frixione, Paolo Nason, Carlo Oleari   +2 more
exaly   +3 more sources

Towards W $ b\overline b $ + j at NLO with an automatized approach to one-loop computations [PDF]

Journal of High Energy Physics, 2012
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
L Reina, Reina Laura
exaly   +4 more sources

Master integrals for bipartite cuts of three-loop photon self energy

Journal of High Energy Physics, 2021
We calculate the master integrals for bipartite cuts of the three-loop propagator QED diagrams. These master integrals determine the spectral density of the photon self energy.
R. N. Lee, A. I. Onishchenko
doaj   +1 more source

Efficiency improvements for the numerical computation of NLO corrections [PDF]

Journal of High Energy Physics, 2012
In this paper we discuss techniques, which lead to a significant improvement of the efficiency of the Monte Carlo integration, when one-loop QCD amplitudes are calculated numerically with the help of the subtraction method and contour deformation. The techniques discussed are: holomorphic and non-holomorphic division into sub-channels, optimisation of ...
Becker, Sebastian, Reuschle, Christian, Weinzierl, Stefan   +2 more
openaire   +2 more sources

Renormalization of the flavor-singlet axial-vector current and its anomaly in dimensional regularization

Journal of High Energy Physics, 2021
The renormalization constant Z J of the flavor-singlet axial-vector current with a non-anticommuting γ 5 in dimensional regularization is determined to order α s 3 $$ {\alpha}_s^3 $$ in QCD with massless quarks.
Taushif Ahmed, Long Chen, Michał Czakon
doaj   +1 more source

Exact results for Z m OS $$ {Z}_m^{\mathrm{OS}} $$ and Z 2 OS $$ {Z}_2^{\mathrm{OS}} $$ with two mass scales and up to three loops

Journal of High Energy Physics, 2020
We consider the on-shell mass and wave function renormalization constants Z m OS $$ {Z}_m^{\mathrm{OS}} $$ and Z 2 OS $$ {Z}_2^{\mathrm{OS}} $$ up to three-loop order allowing for a second non-zero quark mass.
Matteo Fael, Kay Schönwald, Matthias Steinhauser   +2 more
doaj   +1 more source