Results 1 to 10 of about 903,040 (213)
The muon parton distribution functions [PDF]
Journal of High Energy Physics, 2023 We compute the Parton Distribution Functions (PDFs) of the unpolarised muon for the leptons, the photon, the light quarks, and the gluon. We discuss in detail the issues stemming from the necessity of evaluating the strong coupling constant at scales of ...
S. Frixione, G. Stagnitto
doaj +6 more sources
Quasi-parton distribution functions, momentum distributions, and pseudo-parton distribution functions [PDF]
Physical Review D, 2017 We show that quasi-parton distribution functions (quasi-PDFs) may be treated as hybrids of PDFs and primordial rest-frame momentum distributions of partons. This results in a complicated convolution nature of quasi-PDFs that necessitates using large p3≳3
Anatoly Radyushkin
exaly +5 more sources
An analysis of parton distribution functions of the pion and the kaon with the maximum entropy input [PDF]
European Physical Journal C: Particles and Fields, 2021 We present pion and kaon parton distribution functions from a global QCD analysis of the experimental data within the framework of dynamical parton model.
Chengdong Han +3 more
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Parton Distribution Functions and Tensorgluons [PDF]
Universe, 2020 We derive the regularised evolution equations for the parton distribution functions that include tensorgluons.
Roland Kirschner, George Savvidy
doaj +4 more sources
QED parton distribution functions in the MSHT20 fit [PDF]
European Physical Journal C: Particles and Fields, 2022 We present the MSHT20qed set of parton distribution functions (PDFs). These are obtained from the MSHT20 global analysis via a refit including QED corrections to the DGLAP evolution at $${{{\mathcal {O}}}}(\alpha ),{{{\mathcal {O}}}}(\alpha \alpha _S ...
T. Cridge +3 more
doaj +2 more sources
PDFFlow: parton distribution functions on GPU [PDF]
Computer Physics Communications, 2020 We present PDFFlow, a new software for fast evaluation of parton distribution functions (PDFs) designed for platforms with hardware accelerators. PDFs are essential for the calculation of particle physics observables through Monte Carlo simulation ...
S. Carrazza +2 more
semanticscholar +4 more sources
Perspective on polarised parton distribution functions and proton spin [PDF]
Physics Letters B, 2023 Supposing there exists an effective charge which defines an evolution scheme for both unpolarised and polarised parton distribution functions (DFs) that is all-orders exact and using Ansätze for hadron-scale proton polarised valence quark DFs ...
P. Cheng +5 more
doaj +2 more sources
Journal of High Energy Physics, 2023 Multi-parton distributions in a proton, the nonperturbative quantities needed to make predictions for multiple scattering rates, are poorly constrained from theory and data and must be modelled.
Oleh Fedkevych, Jonathan R. Gaunt
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Evolution of parton showers and parton distribution functions [PDF]
Physical Review D, 2020 Initial state evolution in parton shower event generators involves parton distribution functions. We examine the probability for the system to evolve from a higher scale to a lower scale without an initial state splitting. A simple argument suggests that
Z. Nagy, D. Soper
semanticscholar +6 more sources
Parton distribution functions from Ioffe time pseudo-distributions [PDF]
Journal of High Energy Physics, 2019 In this paper, we present a detailed study of the unpolarized nucleon parton distribution function (PDF) employing the approach of parton pseudo-distribution func- tions. We perform a systematic analysis using three lattice ensembles at two volumes, with
Bálint Joó +5 more
doaj +2 more sources