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Gauge-Invariant Decomposition of Nucleon Spin

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TLDR
In this article, a gauge-invariant decomposition of the nucleon spin into quark helicity, quark orbital, and gluon contributions is proposed, and the total quark contribution is measured through virtual Compton scattering in a special kinematic region where single quark scattering dominates.
Abstract
I introduce a gauge-invariant decomposition of the nucleon spin into quark helicity, quark orbital, and gluon contributions. The total quark (and hence the quark orbital) contribution is shown to be measurable through virtual Compton scattering in a special kinematic region where single quark scattering dominates. This deeply virtual Compton scattering has much potential to unravel the quark and gluon structure of the nucleon.

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Electron-Ion Collider: The next QCD frontier: Understanding the glue that binds us all

Alberto Accardi, +83 more
TL;DR: In this article, the science case of an Electron-Ion Collider (EIC), focused on the structure and interactions of gluon-dominated matter, with the intent to articulate it to the broader nuclear science community, is presented.
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Generalized parton distributions

Markus Diehl
- 01 Dec 2003 - 
TL;DR: In this article, the authors give an overview of the theory for generalized parton distributions and their role in small-x physics, and present strategies for phenomenological analysis, including the use of these quantities for describing soft contributions to exclusive processes at large energy and momentum transfer.
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Deeply Virtual Compton Scattering

TL;DR: In this paper, the authors studied the physics of deeply virtual Compton scattering (DVCS) in the large s and small t kinematic region and derived an Altarelli-Parisi type of evolution equations for these distributions.
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Unraveling hadron structure with generalized parton distributions

TL;DR: The generalized parton distribution (GPD) as discussed by the authors was introduced as a universal tool to describe hadrons in terms of quark and gluonic degrees of freedom, and has been used for a long time in studies of hadronic structure.
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Hard scattering factorization from effective field theory

TL;DR: In this article, the soft-collinear effective theory is used to simplify proofs of factorization formulas in highly energetic hadronic processes, and the formalism is applicable to both exclusive and inclusive factorization.
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