Results 31 to 40 of about 76,116 (260)

PARTON DISTRIBUTIONS – DIS06 [PDF]

open access: yesDeep Inelastic Scattering DIS 2006, 2007
8 pages, 7 figures included as .ps or .eps files.
openaire   +2 more sources

Implication of the overlap representation for modelling generalized parton distributions [PDF]

open access: yes, 2001
Based on a field theoretically inspired model of light-cone wave functions, we derive valence-like generalized parton distributions and their double distributions from the wave function overlap in the parton number conserved s-channel.
A Bogicevic   +27 more
core   +2 more sources

Sum rule improved double parton distributions in position space

open access: yesEuropean Physical Journal C: Particles and Fields, 2020
Models for double parton distributions that are realistic and consistent with theoretical constraints are crucial for a reliable description of double parton scattering.
M. Diehl   +4 more
doaj   +1 more source

Skewed parton distributions [PDF]

open access: yesNuclear Physics A, 2000
Applications of perturbative QCD to deeply virtual Compton scattering and hard exclusive electroproduction processes require a generalization of usual parton distributions for the case when long-distance information is accumulated in nonforward matrix elements of quark and gluon light-cone operators.
openaire   +2 more sources

Exclusive double quarkonium production and generalized TMDs of gluons

open access: yesPhysics Letters B, 2022
Being the “mother distributions” of all types of two-parton correlation functions, generalized transverse momentum dependent parton distributions (GTMDs) have attracted a lot of attention over the last years.
Shohini Bhattacharya   +4 more
doaj   +1 more source

Dynamical parton distributions revisited [PDF]

open access: greenThe European Physical Journal C, 1998
Dynamical parton densities, generated radiatively from valence-like inputs at some low resolution scale, are confronted with recent small-x data on deep inelastic and other hard scattering processes. It is shown that within theoretical uncertainties our previous (1994) dynamical/radiative parton distributions are compatible with most recent data and ...
M. Glück, E. Reya, A. Vogt
openalex   +5 more sources

Large-x parton distributions [PDF]

open access: yesPhysics Letters B, 2000
Reliable knowledge of parton distributions at large x is crucial for many searches for new physics signals in the next generation of collider experiments. Although these are generally well determined in the small and medium x range, it has been shown that their uncertainty grows rapidly for x > 0.1.
Kuhlmann, S.   +7 more
openaire   +3 more sources

Quark Wigner Distributions and Orbital Angular Momentum [PDF]

open access: yes, 2011
We study the Wigner functions of the nucleon which provide multidimensional images of the quark distributions in phase space. These functions can be obtained through a Fourier transform in the transverse space of the generalized transverse-momentum ...
Lorce, Cedric, Pasquini, Barbara
core   +1 more source

Pionic parton distributions revisited [PDF]

open access: yesThe European Physical Journal C, 1999
Using constituent quark model constraints we calculate the gluon and sea-quark content of pions solely in terms of their valence density (fixed by N Drell-Yan data) and the known sea and gluon distributions of the nucleon, using the most recent updated valence-like input parton densities of the nucleon. The resulting small-x dynamical QCD predictions
Gluck, M., Reya, E., Schienbein, I.
openaire   +3 more sources

Nuclear parton distribution functions [PDF]

open access: yesNuclear Physics B - Proceedings Supplements, 2009
We study nuclear effects of charged current deep inelastic neutrino-iron scattering in the framework of a chi^2 analysis of parton distribution functions (PDFs). We extract a set of iron PDFs which are used to compute x_Bj-dependent and Q^2-dependent nuclear correction factors for iron structure functions which are required in global analyses of free ...
Schienbein, I.   +5 more
openaire   +4 more sources

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