Results 1 to 10 of about 6,982,123 (170)

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   +3 more sources

Parton Distribution Functions and Tensorgluons

open access: yesUniverse, 2020
We derive the regularised evolution equations for the parton distribution functions that include tensorgluons.
Roland Kirschner, George Savvidy
doaj   +2 more sources

The muon parton distribution functions [PDF]

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   +3 more sources

Three Decades of Soil N<sub>2</sub>O Research-Insights and Gaps. [PDF]

open access: yesGlob Chang Biol
Progress in N2O Research and Key Breakthroughs and Transitions from 1990 to 2025 across three domains: (A) process understanding, (B) microbial ecology, and (C) modelling of soil N2O emissions. ABSTRACT Nitrous oxide (N2O) is a potent greenhouse gas (GHG) whose atmospheric concentration continues to rise, largely driven by nitrogen (N) inputs to ...
Butterbach-Bahl K   +5 more
europepmc   +2 more sources

Pion generalized parton distributions and light-front wave functions in the Nambu–Jona-Lasinio model

open access: yesNuclear Physics B, 2021
Pion generalized parton distributions and light-front wave functions are investigated in the framework of Nambu–Jona-Lasinio model. The properties of pion generalized parton distributions and light-front wave functions are examined separately. Proceeding
Jin-Li Zhang   +3 more
doaj   +1 more source

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   +1 more source

An analysis of polarized parton distribution functions with nonlinear QCD evolution equations

open access: yesNuclear Physics B, 2022
We present the polarized parton distribution functions from a QCD analysis of the worldwide polarized deep inelastic scattering data, based on the dynamical parton distribution model.
Chengdong Han   +3 more
doaj   +1 more source

Parton Distribution Functions and Lattice QCD [PDF]

open access: yesEPJ Web of Conferences, 2019
Recently, there have been rapid developments in lattice-QCD calculations of proton structure, especially in the parton distribution functions (PDFs). We overcame a longstanding obstacle and for the first time in lattice-QCD are able to directly calculate
Lin Huey-Wen
doaj   +1 more source

An analysis of parton distribution functions of the pion and the kaon with the maximum entropy input

open access: yesEuropean 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
doaj   +1 more source

Transverse-momentum-dependent parton distribution functions for spin-1 hadrons

open access: yesSciPost Physics Proceedings, 2022
We show transverse-momentum-dependent parton distribution functions (TMDs) for spin-1 hadrons including twist-3 and 4 functions by taking the decomposition of a quark correlation function in the Lorentz-invariant way with the conditions of Hermiticity
S. Kumano, Qin-Tao Song
doaj   +1 more source

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