Results 21 to 30 of about 1,855 (178)
, 2022 We discuss the determination of the parton substructure of hadrons by casting it as a peculiar form of pattern recognition problem in which the pattern is a probability distribution, and we present the way this problem has been tackled and solved. Specifically, we review the NNPDF approach to PDF determination, which is based on the combination of a ...
Forte S., Carrazza S.
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Parton distribution functions [PDF]
Nuclear Physics B - Proceedings Supplements, 1997 Parton distribution functions give the probability to find partons (quarks and gluons) in a hadron as a function of the fraction x of the proton's momentum carried by the parton. They are conventionally defined in terms of matrix elements of certain operators.
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Nonforward parton distributions [PDF]
Physical Review D, 1997 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.
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PARTON DISTRIBUTIONS – DIS06 [PDF]
Deep Inelastic Scattering DIS 2006, 2007 8 pages, 7 figures included as .ps or .eps files.
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The multidimensional nucleon structure
EPJ Web of Conferences, 2016 We discuss different kinds of parton distributions, which allow one to obtain a multidimensional picture of the internal structure of the nucleon.
Pasquini Barbara, Lorcé Cédric
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Asymmetric parton distributions [PDF]
AIP Conference Proceedings, 1997 Applications of perturbative QCD to hard exclusive electroproduction processes in the Bjorken limit at small invariant momentum transfer t bring in a new type of parton distributions which have hybrid properties, resembling both the parton distribution functions and the distribution amplitudes.
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Dynamical parton distributions revisited [PDF]
The 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 ...
Gl\\"uck, M., Reya, E., Vogt, A.
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Sum rule improved double parton distributions in position space
European 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
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Skewed parton distributions [PDF]
Nuclear 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.
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European Physical Journal C: Particles and Fields, 2020 Generalized transverse momentum dependent parton distributions (GTMDs), as mother funtions of transverse momentum dependent parton distributions (TMDs) and generalized parton distributions (GPDs), encode the most general parton structure of hadrons.
Xuan Luo, Hao Sun
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