Results 131 to 140 of about 903,040 (213)
Flavor asymmetry of light sea quarks in proton: a light-front spectator model
European Physical Journal C: Particles and FieldsWe formulate a light-front spectator model for the proton that incorporates the presence of light sea quarks. In this particular model, the sea quarks are seen as active partons, whereas the remaining components of the proton are treated as spectators ...
Poonam Choudhary +2 more
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The twist-three distribution eq(x,k⊥) in a light-front model
Physics Letters B, 2019 We discuss the twist-three, unpolarized, chiral-odd, transverse momentum dependent parton distribution (TMD) eq(x,k⊥) within a light-front model. We review a model-independent decomposition of this TMD, which follows from the QCD equations of motion and ...
Barbara Pasquini, Simone Rodini
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Impact of ATLAS measurements on PDFs
EPJ Web of Conferences, 2015 A review of the ATLAS measurements sensitive to parton distribution functions is presented. The analyses use proton–proton collision data at center–of–mass–energy √s = 7 TeV collected at the Large Hadron Collider between April and November 2011.
Orlando Nicola
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Parton distribution functions with QED corrections
, 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 ...
openaire +3 more sources
Window Observables for Benchmarking Parton Distribution Functions
Physical Review LettersGlobal analysis of collider and fixed-target experimental data and calculations from lattice quantum chromodynamics (QCD) are used to gain complementary information on the structure of hadrons. We propose novel “window observables” that allow for higher precision cross-validation between the different approaches, a critical step ...
Joe Karpie +3 more
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Parton Distribution Function Uncertainties
, 2001 We present parton distribution functions which include a quantitative estimate of its uncertainties. The parton distribution functions are optimized with respect to deep inelastic proton data, expressing the uncertainties as a density measure over the functional space of parton distribution functions.
Giele, Walter T. +2 more
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Gluon distribution and mass decomposition of the pion and kaon
European Physical Journal C: Particles and FieldsWe present the gluon distribution functions of the pion and kaon in small-x and large-x regions, and compare them with the results obtained from lattice QCD and continuum Schwinger function methods.
Chengdong Han +3 more
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THE PARTON DISTRIBUTION FUNCTION LIBRARY
International Journal of Modern Physics A, 1995 This article describes an integrated package of Parton Density Functions called PDFLIB which has been added to the CERN Program Library Pool W999 and is labelled as W5051. In this package all the different sets of parton density functions of the Nucleon, the Pion and the Photon which are available today have been put together. All these sets have been
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A parton shower consistent with parton densities at LO and NLO: Pdf2Isr
European Physical Journal C: Particles and FieldsWe present a method for obtaining an initial-state parton shower model where the (backward) evolution fully consistent with the (forward) evolution of the collinear parton density used.
H. Jung +3 more
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