Generalized parton distributions of light nuclei

Abstract

The measurement of nuclear generalized parton distributions (GPDs) in hard exclusive processes, such as deeply virtual Compton Scattering (DVCS), will be one of the main achievements of a new generation of experiments at high luminosity, such as those under way at the Jefferson Laboratory (JLab) with the 12 GeV electron beam and, above all, those planned at the future Electron Ion Collider. The CLAS collaboration at JLab has recently demonstrated the possibility to disentangle the two different channels of nuclear DVCS, the coherent and incoherent ones, a first step towards the measurement of GPDs of nuclei and of bound nucleons, respectively, opening new exciting perspectives in the field. In this scenario, theoretical precise calculations, ultimately realistic, become mandatory. Light nuclei, for which realistic studies are affordable and conventional nuclear effects can be safely estimated, so that possible exotic effects can be exposed, play an important role. The status of the calculation of GPDs for light nuclei will be summarized, in particular for ${}^3$He and ${}^4$He, and some updates will be presented. The prospects for the next years, related to the new series of measurements at future facilities, will be addressed.

arXiv comment22 pages, 7 figures, Invited contribution to the Few-Body Systems special issue: "New Trends in Hadron Physics: a Few-Body Perspective"

References in corpus (48)

• An accurate nucleon-nucleon potential with charge-independence breaking
• Gauge-Invariant Decomposition of Nucleon Spin and Its Spin-Off
• Wave Functions, Evolution Equations and Evolution Kernels from Light-Ray Operators of QCD
• Unraveling hadron structure with generalized parton distributions
• Hard Exclusive Reactions and the Structure of Hadrons
• Quantum Monte Carlo Calculations of $A\le 6$ Nuclei
• Scaling Limit of Deeply Virtual Compton Scattering
• Probing Cold Dense Nuclear Matter
• Generalized parton distributions and strong forces inside nucleons and nuclei
• Generalized parton distributions in impact parameter space
• Forces inside hadrons: pressure, surface tension, mechanical radius, and all that
• Measurement of 2- and 3-Nucleon Short Range Correlation Probabilities in Nuclei
• A high-precision variational approach to three- and four-nucleon bound and zero-energy scattering states
• The role of the quark and gluon GPDs in hard vector-meson electroproduction
• Revisiting the mechanical properties of the nucleon
• Generalized parton distributions in the deuteron
• Calculation of the Alpha--Particle Ground State within the Hyperspherical Harmonic Basis
• The target asymmetry in hard vector-meson electroproduction and parton angular momenta
• Deep Electroproduction of Photons and Mesons on the Deuteron
• Deeply virtual Compton scattering off nuclei
• DVCS on spinless nuclear targets in impulse approximation
• The energy-momentum tensor of spin-1 hadrons: formalism
• Generalized Parton Distributions of ^3He
• Angular momentum sum rule for spin one hadronic systems
• First Exclusive Measurement of Deeply Virtual Compton Scattering off ${}^4$He: Toward the 3D Tomography of Nuclei
• On the A-dependence of nuclear generalized parton distributions
• Analysis of Deeply Virtual Compton Scattering Data at Jefferson Lab and Proton Tomography
• Microscopic Description of Deeply Virtual Compton Scattering off Spin-0 Nuclei
• Nuclear-mass dependence of azimuthal beam-helicity and beam-charge asymmetries in deeply virtual Compton scattering
• In-medium modified energy-momentum tensor form factors of the nucleon within the framework of a $\pi$-$\rho$-$\omega$ soliton model
• 3D Structure and Nuclear Targets
• Exposing Novel Quark and Gluon Effects in Nuclei
• Transversity generalized parton distributions for the deuteron
• Exploring the Structure of the Bound Proton with Deeply Virtual Compton Scattering
• Conventional nuclear effects on generalized parton distributions of trinucleons
• Measurement of transparency ratios for protons from short-range correlated pairs
• Exact 4He Spectral Function in a Semirealistic NN Potential Model
• Coherent deeply virtual Compton scattering off ${}^4$He
• Generalized Parton Distributions and Color Transparency
• Extracting generalized neutron parton distributions from 3He data
• Neutron orbital structure from generalized parton distributions of 3He
• Light-Front spin-dependent Spectral Function and Nucleon Momentum Distributions for a Three-Body System
• GRS computation of deep inelastic electron scattering on 4He
• Neutron contribution to nuclear DVCS asymmetries
• Polynomiality sum rules for generalized parton distributions of spin-1 targets
• Catching a glimpse of the parton structure of the bound proton
• Theoretical description of deeply virtual Compton scattering off ${}^3$He
• Leading twist nuclear shadowing, nuclear generalized parton distributions and nuclear DVCS at small x

Cited by in corpus (4)

• 50 Years of Quantum Chromodynamics
• Transition distribution amplitudes and hard exclusive reactions with baryon number transfer
• Deep-inelastic electron-deuteron scattering with spectator nucleon tagging at the electron-ion collider. Extracting free nucleon structure
• Deeply virtual Compton scattering off Helium nuclei with positron beams