Results 1 to 10 of about 3,445 (203)

Parton Distribution Functions and Tensorgluons [PDF]

open access: yesUniverse, 2020
We derive the regularised evolution equations for the parton distribution functions that include tensorgluons.
Roland Kirschner, George Savvidy
doaj   +4 more sources

PDFFlow: Parton distribution functions on GPU [PDF]

open access: yesComputer Physics Communications, 2021
8 pages, 7 figures, 2 tables.
Stefano Carrazza   +2 more
exaly   +3 more sources

The muon parton distribution functions

open access: yesJournal 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   +5 more sources

Equation-of-motion and Lorentz-invariance relations for tensor-polarized parton distribution functions of spin-1 hadrons

open access: diamondPhysics Letters B, 2022
Structure functions of polarized spin-1 hadrons will be measured at various accelerator facilities in the near future. Recently, transverse-momentum-dependent and collinear parton distribution functions were theoretically proposed at twist 3 and twist 4 ...
S. Kumano, Qin-Tao Song
doaj   +3 more sources

On sum rules for double and triple parton distribution functions and Pythia’s model of multiple parton interactions

open access: yesJournal 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
doaj   +2 more sources

The MSHT20 Parton Distribution Functions

open access: yesSciPost Physics Proceedings, 2022
We present the new MSHT20 set of parton distribution functions (PDFs) of the proton, determined from a global analysis of the available hard scattering data and superseding the MMHT14 sets.
R.S. Thorne, S. Bailey, T. Cridge, L. Harland-Lang, A.D. Martin
doaj   +2 more sources

ManeParse : A Mathematica reader for Parton Distribution Functions [PDF]

open access: yesComputer Physics Communications, 2017
15 pages, 16 figures, 3 tables, pdflatex. Version 2: Update to published CPC version.
F I Olness
exaly   +3 more sources

New parton distribution functions for the photon [PDF]

open access: greenNuclear Physics B, 1997
We present new improved parton distributions for the photon. We fit {\bf all} available data on the photon structure function, $F^γ_{2}(x,Q^2)$, with $Q^2\ge 3$ GeV$^2$, in order to determine the quark distributions. We also pay particular attention to the gluon distribution in the photon, $g^γ(x,Q^2)$, which has been poorly constrained in earlier ...
L.E. Gordon, J.K. Storrow
openalex   +4 more sources

Parton distribution functions with QED corrections [PDF]

open access: green, 2015
We present the first unbiased determination of parton distribution functions (PDFs) with electroweak corrections. The aim of this thesis is to provide an exhaustive description of the theoretical framework and the technical implementation which leads to the determination of a set of PDFs which includes the photon PDF and quantum electrodynamics (QED ...
Stefano Carrazza
openalex   +4 more sources

Parton distribution and decay functions

open access: yesNuclear Physics B, 1982
We define parton distribution and decay functions in QCD and prove some of their basic properties. These include renormalization, light-cone expansions and sum rules.
John Collins, Davison E Soper
exaly   +2 more sources

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