Results 41 to 50 of about 35,945 (210)
Parton distribution functions in the context of parton showers [PDF]
, 2014 When the initial state evolution of a parton shower is organized according to the standard "backward evolution'' prescription, ratios of parton distribution functions appear in the splitting probabilities.
Nagy, Zoltan, Soper, Davison E.
core +2 more sources
Momentum conservation and unitarity in parton showers and NLL resummation
Journal of High Energy Physics, 2018 We present a systematic study of differences between NLL resummation and parton showers. We first construct a Markovian Monte-Carlo algorithm for resummation of additive observables in electron-positron annihilation.
Stefan Höche +2 more
doaj +1 more source
PanScales parton showers for hadron collisions: formulation and fixed-order studies
Journal of High Energy Physics, 2022 We formulate PanScales parton showers for hadron collisions so as to achieve next-to-leading logarithmic (NLL) accuracy across a broad set of observables. We do so specifically for colour singlet production. Relative to the existing PanScales final-state
Melissa van Beekveld +5 more
doaj +1 more source
Associated production of charged Higgs bosons and top quarks with POWHEG [PDF]
, 2012 The associated production of charged Higgs bosons and top quarks at hadron colliders is an important discovery channel to establish the existence of a non-minimal Higgs sector. Here, we present details of a next-to-leading order (NLO) calculation of this
A. Djouadi +42 more
core +4 more sources
Reweighting a parton shower using a neural network: the final-state case
Journal of High Energy Physics, 2019 The use of QCD calculations that include the resummation of soft-collinear logarithms via parton-shower algorithms is currently not possible in PDF fits due to the high computational cost of evaluating observables for each variation of the PDFs ...
Enrico Bothmann, Luigi Del Debbio
doaj +1 more source
Sector showers for hadron collisions
Journal of High Energy Physics, 2020 In conventional parton showers (including ones based on dipoles/antennae), a given (Born + m)-parton configuration can typically be reached via O(m!) different “shower histories”.
Helen Brooks +2 more
doaj +1 more source
A new approach to color-coherent parton evolution
Journal of High Energy Physics, 2023 We present a simple parton-shower model that replaces the explicit angular ordering of the coherent branching formalism with a differentially accurate simulation of soft-gluon radiation by means of a non-trivial dependence of the splitting functions on ...
Florian Herren +4 more
doaj +1 more source
Next-to-Leading-Order Event Generators [PDF]
, 2012 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.
Bryan Webber +3 more
core +1 more source
Evolution variable dependence of jet substructure [PDF]
, 2015 Studies on jet substructure have evolved significantly in recent years. Jet substructure is essentially determined by QCD radiations and non-perturbative effects.
Sakaki, Yasuhito
core +2 more sources
Parton-shower matching systematics in vector-boson-fusion WW production
European Physical Journal C: Particles and Fields, 2017 We perform a detailed analysis of next-to-leading order plus parton-shower matching in vector-boson-fusion WW production including leptonic decays. The study is performed in the Herwig 7 framework interfaced to VBFNLO 3, using the angular-ordered and ...
Michael Rauch, Simon Plätzer
doaj +1 more source