REVIEW 34 cited by
Nonforward Parton Distributions
Not yet reviewed by Pith; the record is open.
This paper has not been read by Pith yet. Machine review is queued; the pith claim, tier, and objections will appear here once it completes.
SPECIMEN: schema-true, not a live event
T0 review · schema-true
One-sentence machine reading of the paper's core claim.
pith:XXXXXXXX · record.json · timestamp
Signed reviews
read the original abstract
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 <p'|O|p> of quark and gluon light-cone operators. We describe two types of nonperturbative functions parametrizing such matrix elements: double distributions F(x,y;t) and nonforward distribution functions F_\zeta (X;t), discuss their spectral properties, evolution equations which they satisfy, basic uses and general aspects of factorization for hard exclusive processes.
Forward citations
Cited by 34 Pith papers
-
Kinematic power corrections to DVCS to twist-six accuracy
Complete kinematic power corrections up to twist-6 are derived for nucleon DVCS, and the series converges best when organized in powers of 1/(Q²+t).
-
Matching collinear factorization with color-glass condensate for inclusive and exclusive deep inelastic scattering
Collinear factorization amplitudes exactly reproduce the large-Q² expansion of CGC amplitudes for inclusive DIS, DVCS, and DVMP at the amplitude level.
-
Exclusive photoproduction of a di-meson pair with large invariant mass
Computes LO amplitudes for di-meson photoproduction channels sensitive to quark GPDs and reports high cross sections suitable for GPD studies at JLab energies.
-
Toward an advanced phenomenology of $\pi N$ transition distribution amplitudes
A flexible two-component model of pion-nucleon transition distribution amplitudes is fitted to CLAS data and used to predict cross-sections and three leading-twist spin asymmetries for backward pion electroproduction.
-
Resummation for Lattice QCD Calculation of Generalized Parton Distributions at Nonzero Skewness
A threshold factorization and resummation scheme for quasi-GPD matching in LaMET is derived and shown to be self-consistent on a GPD model.
-
Gluon Unpolarized, Polarized, and Transversity GPDs from Lattice QCD: Lorentz-Covariant Parametrization (Part I)
A Lorentz-covariant tensor basis and projection set is constructed that isolates all eight leading-twist gluon GPDs from lattice QCD matrix elements for spin-0 and spin-1/2 hadrons.
-
The two-loop coefficient functions for double deeply virtual Compton scattering
The paper derives the two-loop coefficient functions for the operator product expansion of two electromagnetic currents in general kinematics, the central ingredient for next-to-next-to-leading-order DDVCS predictions.
-
Multipole structure of the $N \to \Delta$ Transition Generalized Parton Distributions
The four N oΔ transition GPDs decompose into monopole, two dipole and quadrupole multipole GPDs in one-to-one correspondence with light-front helicity amplitudes, defining impact-parameter transition densities at zero...
-
Exclusive Quark and Gluon Dijet Production as Probes of GPDs at Collider Energies
Exclusive quark and gluon dijet electroproduction is analyzed in collinear factorization as a GPD probe, extending prior work with helicity GPDs and an electromagnetic channel, with HERA comparisons and EIC projections.
-
The nucleon unpolarized generalized form factors and Mellin moments up to fourth order
First lattice-QCD extraction of nucleon unpolarized Mellin moments through fourth order at physical pion mass, with GFF Q^{2} dependence and a reconstructed isovector valence PDF.
-
The Gravitational Form Factor of the Pion in Perturbative QCD with a Dilaton Interaction
Anomaly-induced dilaton-like corrections in the hard kernel significantly modify pion GFFs at large Q^{2} within a factorization approach using Sudakov resummation and a Gaussian TMD wave function.
-
Finite-$t$ and target mass corrections for the short-distance expansion of quasi(pseudo) GPDs
Derives t/P_z² and m_N²/P_z² kinematic corrections to the short-distance expansion of quasi-GPD matrix elements for lattice QCD applications.
-
Reconstruction of Gravitational Form Factors using Generative Machine Learning
A diffusion model trained on synthetic physics-motivated curves reconstructs the proton's A(t), J(t), D(t) from sparse data, extracting c8=-4.6±0.8, c9=-0.61±0.19, and D(0)=-4.3±0.8.
-
Gradient flow for parton distribution functions: first application to the pion
Pion PDF moment ratios up to <x^5> were extracted from lattice QCD with gradient flow and agree with phenomenological fits.
-
Relativistic corrections to exclusive photoproduction of Quarkonia near-threshold
The leading relativistic correction to near-threshold photoproduction of J/psi and Upsilon is derived; for J/psi it is so large that the standard moment-expansion analysis of the proton's gluon gravitational form fact...
-
Twist-3 generalized parton distributions of sea quarks at zero skewness in the light-cone quark model
A light-cone meson-baryon model is used to compute the eight nonzero twist-3 generalized parton distributions of ubar and dbar sea quarks at zero skewness, plus the derived e(x) and orbital angular momentum.
-
Generalized parton distributions of the kaon and pion within the nonlocal chiral quark model
The paper extends the nonlocal chiral quark model to strange quarks and computes kaon and pion generalized parton distributions, their QCD evolution, and strange-to-light gravitational form factor ratios.
-
Implications of exclusive photon leptoproduction measurements for the proton charge-radius puzzle
After excluding or cutting low-|t| CLAS 2018 data, BH-dominated EP measurements yield a proton charge radius smaller than the PDG average and consistent with PRad and muonic hydrogen.
-
Constraining DVCS Compton Form Factors Using Lattice QCD informed Neural Network
A neural network framework informed by lattice QCD uses all-order dispersion relations to significantly constrain both real and imaginary parts of Compton Form Factors extracted from DVCS proton data.
-
Gravitational form factors of light mesons from Basis Light-Front Quantization
Gravitational form factors of pion and kaon are computed in BLFQ; A(Q^2) agrees with lattice QCD while D(Q^2) is enhanced at low Q^2 due to small-x and zero-mode sensitivity in the truncated model.
-
Assessing the impact of the electron ion collider in China on Deeply Virtual Compton Scattering
Projected EicC DVCS asymmetry data would substantially reduce uncertainties on all leading-order Compton form factors, most strongly in the sea-quark region.
-
Extracting Mellin moments of double parton distributions from lattice data
The skewness dependence of hadronic correlation functions affects Mellin moment extraction for double parton distributions from existing lattice data, as quantified through several models.
-
Mechanical properties of the $\Omega^-$ baryon from gravitational form factors
Using QCD sum rules, the authors extract seven gravitational form factors of the Omega baryon and derive its internal energy, angular momentum, pressure, shear, radii, and D-terms.
-
On the Impossibility of Obtaining Time-Independent, Three-Dimensional, Spherically-Symmetric Densities of Confined Systems of Relativistically Moving Constituents
Time-independent three-dimensional spherical densities cannot be defined for relativistic confined systems; only transverse two-dimensional light-front densities are consistent with quantum mechanics and Poincare invariance.
-
Off-shell modifications of the pion generalized parton distributions and transverse momentum dependent parton distributions
In the NJL model, off-shell pion GPDs and TMDs differ from on-shell ones by 15 to 25 percent and acquire new odd-power form factors from broken crossing symmetry.
-
Gluon Parts of Gravitational Form Factors and Mass Distribution
A DSE rainbow-ladder calculation produces quark and gluon gravitational form factors, mass radii, and D-terms for nucleon and pion, finding gluon distributions generated purely by quark dressing.
-
Gravitational Form Factors and the QCD Dilaton at Large Momentum Transfer
A proceedings that identifies a one-loop conformal anomaly pole, interpreted as a dilaton, in the non-Abelian TJJ vertex and sketches its insertion into gravitational form factor factorization at large momentum transfer.
-
Mechanical properties of the nucleon from the generalized parton distributions
Using a double-distribution GPD model constrained by elastic-scattering data, the paper fits DQ(0) = -3.37 ± 0.17 from Compton form factors and derives proton pressure, shear, and radii.
-
Mapping spatial distributions within pseudoscalar mesons
A new analytic parametrization of meson valence-quark GPDs yields spatial charge and mass distributions and radius ratios for pions, kaons and heavy-light mesons.
-
A simple non-parametric reconstruction of parton distributions from limited Fourier information
A fixed-hyperparameter Gaussian-process prior recovers parton distributions from limited Ioffe-time data and yields more realistic small-x uncertainties than simple parametric fits.
-
Measurement of the hard exclusive $\pi^{0}$ muoproduction cross section at COMPASS
COMPASS measured hard exclusive neutral-pion muoproduction cross sections over Q2 from 1 to 8 (GeV/c)^2 and found a large transverse-transverse interference term, supporting chiral-odd GPD E_T dominance.
-
Kernel methods for evolution of generalized parton distributions
Finite-element discretization turns GPD Q2 evolution into differentiable matrix multiplications; the new tiktaalik code reproduces PARTONS/APFEL++ at about 1% for LO evolution over most of x.
-
Physics of the Electron-Ion Collider in China
A review of the EicC physics case argues that the proposed Chinese electron-ion collider, at 15-20 GeV collision energy, can complement the US EIC with high-precision measurements of sea-quark spin structure, proton m...
-
Three-dimensional imaging of hadrons with hard exclusive reactions: advances in experiment, theory, phenomenology, and lattice QCD
A community white paper reviewing GPD-based 3D imaging of hadrons — experiment, theory, phenomenology, lattice QCD — and the roadmap toward precision tomography at JLab, COMPASS, J-PARC, and future electron-ion colliders.
Discussion (0). Continue with ORCID to comment.