Results 21 to 30 of about 6,982,123 (170)

Evolution of parton showers and parton distribution functions

open access: yes, 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
Soper, Davison E., Nagy, Zoltan
core   +1 more source

Collinear matching for next-to-leading power transverse-momentum distributions

open access: yesPhysics Letters B, 2023
Phenomenological studies of transverse momentum dependent (TMD) parton distributions rely on the expansion in small values of the transverse separation of fields, where TMD parton distributions match onto collinear parton distribution functions.
Simone Rodini   +2 more
doaj   +1 more source

PDFFlow: Parton distribution functions on GPU [PDF]

open access: yes, 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 ...
Stefano Carrazza   +5 more
core   +1 more source

Novel applications of Lattice QCD: Parton Distributions, proton charge radius and neutron electric dipole moment

open access: yesEPJ Web of Conferences, 2017
We briefly discuss the current status of lattice QCD simulations and review selective results on nucleon observables focusing on recent developments in the lattice QCD evaluation of the nucleon form factors and radii, parton distribution functions and ...
Alexandrou Constantia
doaj   +1 more source

Analytical solutions of the QCD⊗QED DGLAP evolution equations based on the Mellin transform technique in NLO approximation

open access: yesPhysics Letters B, 2017
In this paper we present a new and efficient analytical solutions for evolving the QCD⊗QED DGLAP evolution equations in Mellin space and obtain the parton distribution functions (PDFs) in perturbative QCD including the QED corrections.
Marzieh Mottaghizadeh   +2 more
doaj   +1 more source

Measurement of associated W+ charm production in pp collisions at √s=7 TeV [PDF]

open access: yes, 2014
Open Access, Copyright CERN, for the benefit of the CMS Collaboration.Measurements are presented of the associated production of a W boson and a charm-quark jet (W + c) in pp collisions at a center-of-mass energy of 7 TeV.
Whitmore, J.   +999 more
core   +1 more source

Proton parton distribution functions using ATLAS data

open access: yes, 2022
Precise knowledge of proton parton distribution functions is a crucial element of accurate predictions of both Standard Model and Beyond Standard Model physics at hadron colliders such as the LHC.
Conroy, Eimear Isobel
core   +1 more source

Extractions of polarized and unpolarized parton distribution functions [PDF]

open access: yes, 2014
An overview of our ongoing extractions of parton distribution functions of the nucleon is given. First JAM results on the determination of spin-dependent parton distribution functions from world data on polarized deep-inelastic scattering are presented ...
Jimenez-Delgado, Pedro
core   +1 more source

Parton physics on a quantum computer

open access: yesPhysical Review Research, 2020
Parton distribution functions and hadronic tensors may be computed on a universal quantum computer without many of the complexities that apply to Euclidean lattice calculations.
Henry Lamm   +2 more
doaj   +1 more source

CJ15 global PDF analysis with new electroweak data from the STAR and SeaQuest experiments

open access: yesSciPost Physics Proceedings, 2023
We present updates to a recent CTEQ-Jefferson Lab (CJ) global analysis of parton distribution functions with a new set of electroweak data that provide unique access to quark flavor separation in the proton.
Sanghwa Park, Alberto Accardi, Xiaoxian Jing, Joseph F. Owens
doaj   +1 more source

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