Results 91 to 100 of about 1,544,264 (173)

Transverse orbital angular momentum in the proton

Physics Letters B
Using the equations of motion of QCD and Lorentz invariance relations, we show a new, more direct way of obtaining a sum rule for the proton’s quark transverse angular momentum in terms of contributions identified as spin and orbital components.
Osamah Alkasassbeh, Abha Rajan, Michael Engelhardt, Simonetta Liuti   +3 more
doaj   +1 more source

Deeply Virtual Compton Scattering and Exclusive Meson Production

EPJ Web of Conferences, 2015
A selection of hard exclusive measurements (deeply virtual Compton Scattering and meson production) from past, present and future experimental programs are reviewed. The goal is the determination of the Generalized Parton Distributions which offer one of
d’Hose Nicole
doaj   +1 more source

Generalized parton distributions in the deuteron

, 2001
We introduce generalized quark and gluon distributions in the deuteron, which can be measured in exclusive processes like deeply virtual Compton scattering and meson electroproduction. We discuss the basic properties of these distributions, and point out
F. Cano, B. Pire, Pire, B., Diehl, M., M. Diehl, E. R. Berger, Cano, F., Berger, Edgar R.   +7 more
core   +1 more source

A unified neural-network framework for nucleon imaging from numerical simulations of QCD

Journal of High Energy Physics
Parton distributions encode the momentum-space structure and, in their generalizations, the spatial tomography of quarks and gluons inside hadrons, the building blocks of visible matter.
Min-Huan Chu, Krzysztof Cichy, Martha Constantinou, Paweł Sznajder, Jakub Wagner   +4 more
doaj   +1 more source

Generalized parton distributions in a meson cloud model

, 2007
We present a model calculation of the generalized parton distributions where the nucleon is described by a quark core surrounded by a mesonic cloud. In the one-meson approximation, we expand the Fock state of the physical nucleon in a series involving a ...
PASQUINI, BARBARA, BOFFI, SIGFRIDO
core   +1 more source

Linking generalized parton distributions to constituent quark models

, 2003
The link between the nucleon generalized parton distributions and the non-diagonal one-body density matrix in momentum space is studied. Attention is focused on the region where quark generalized parton distributions (GPDs) describe emission and ...
PASQUINI, BARBARA, BOFFI, SIGFRIDO, M. TRAINI   +2 more
core   +1 more source

Skewed generalized parton distributions of proton from basis light-front quantization

Physics Letters B
We obtain all the leading-twist quark generalized parton distributions (GPDs) inside the proton at nonzero skewness within the basis light-front quantization framework.
Yiping Liu, Siqi Xu, Chandan Mondal, Zhi Hu, Xingbo Zhao, James P. Vary   +5 more
doaj   +1 more source

Eddington-inspired Born-Infeld gravity: Constraints from the generalized parton distributions (GPDs)

Physics Letters B
The Eddington-inspired Born-Infeld (EiBI) theory of gravity modifies general relativity in high-density regimes. It offers an alternative framework that avoids cosmological singularities and remodels gravitational dynamics within compact objects.
Muhammad Goharipour, Anoushiravan Moradi, K. Azizi   +2 more
doaj   +1 more source

Modeling Nucleon Generalized Parton Distributions

, 2013
We discuss building models for nucleon generalized parton distributions (GPDs) H and E that are based on the formalism of double distributions (DDs).
Radyushkin, Anatoly V.
core  

Three-dimensional imaging of pion using lattice QCD: generalized parton distributions

Journal of High Energy Physics
In this work, we report a lattice calculation of x-dependent valence pion generalized parton distributions (GPDs) at zero skewness with multiple values of the momentum transfer −t.
Heng-Tong Ding, Xiang Gao, Swagato Mukherjee, Peter Petreczky, Qi Shi, Sergey Syritsyn, Yong Zhao   +6 more
doaj   +1 more source