Deeply virtual Compton scattering cross section at high Bjorken $x_B$

Abstract

We report high-precision measurements of the Deeply Virtual Compton Scattering (DVCS) cross section at high values of the Bjorken variable $x_B$. DVCS is sensitive to the Generalized Parton Distributions of the nucleon, which provide a three-dimensional description of its internal constituents. Using the exact analytic expression of the DVCS cross section for all possible polarization states of the initial and final electron and nucleon, and final state photon, we present the first experimental extraction of all four helicity-conserving Compton Form Factors (CFFs) of the nucleon as a function of $x_B$, while systematically including helicity flip amplitudes. In particular, the high accuracy of the present data demonstrates sensitivity to some very poorly known CFFs.

References in corpus (28)

• Gauge-Invariant Decomposition of Nucleon Spin and Its Spin-Off
• Wave Functions, Evolution Equations and Evolution Kernels from Light-Ray Operators of QCD
• Hard Exclusive Reactions and the Structure of Hadrons
• Factorization for hard exclusive electroproduction of mesons in QCD
• Single-spin asymmetries: the Trento conventions
• One-Loop Corrections and All Order Factorization In Deeply Virtual Compton Scattering
• Deeply Virtual Compton Scattering Beam-Spin Asymmetries
• Scaling Tests of the Cross Section for Deeply Virtual Compton Scattering
• A measurement of the Q^2, W and t dependences of deeply virtual Compton scattering at HERA
• Measurement of Deeply Virtual Compton Scattering and its t-dependence at HERA
• QED radiative corrections to virtual Compton scattering
• Measurement of Deeply Virtual Compton Scattering with a Polarized Proton Target
• Cross sections for the exclusive photon electroproduction on the proton and Generalized Parton Distributions
• Helicity skewed quark distributions of the nucleon and chiral symmetry
• The E00-110 experiment in Jefferson Lab's Hall A: Deeply Virtual Compton Scattering off the Proton at 6 GeV
• Measurement of double-spin asymmetries associated with deeply virtual Compton scattering on a transversely polarized hydrogen target
• Exclusive Leptoproduction of Real Photons on a Longitudinally Polarised Hydrogen Target
• Deeply Virtual Compton Scattering to the twist-four accuracy: Impact of finite-$t$ and target mass corrections
• Beam-helicity asymmetry arising from deeply virtual Compton scattering measured with kinematically complete event reconstruction
• Single and double spin asymmetries for deeply virtual Compton scattering measured with CLAS and a longitudinally polarized proton target
• Description and interpretation of DVCS measurements
• A Glimpse of Gluons through Deeply Virtual Compton Scattering on the Proton
• Longitudinal target-spin asymmetries for deeply virtual Compton scattering
• Extraction of Generalized Parton Distribution Observables from Deeply Virtual Electron Proton Scattering Experiments
• Light-Ray Evolution Equations and Leading-Twist Parton Helicity-Dependent Nonforward Distributions
• Deep exclusive electroproduction of ${\pi }^0$ at high $Q^2$ in the quark valence regime
• Measurement of Unpolarized and Polarized Cross Sections for Deeply Virtual Compton Scattering on the Proton at Jefferson Laboratory with CLAS
• Deeply virtual Compton scattering off the neutron

Cited by in corpus (13)

• 50 Years of Quantum Chromodynamics
• Precision Studies of QCD in the Low Energy Domain of the EIC
• 2D energy-momentum tensor distributions of nucleon in a large-$N_c$ quark model from ultra-relativistic to non-relativistic limit
• Gravitational form factors of pion from top-down holographic QCD
• Kinematical higher-twist corrections in ${\gamma }^{\ast }\to M_1{M}_2\gamma$: Neutral meson production
• Pion gravitational form factors at large momentum transfer in the instant-form relativistic impulse approximation approach
• A step towards estimation of the neutral-hadron size: the gravitational mass radius of pi0 meson in a relativistic theory of composite particles
• Scale-anomaly-induced binding pressure in hadrons
• Deeply virtual Compton scattering in the tensor-pomeron approach
• Scalar-glueball-mediated scale-anomaly dominance of the confining pressure of the pion in holographic QCD
• Sum rules for the Gravitational Form Factors using light-front dressed quark state
• Unified and optimal frame choice for generalized parton distributions
• New framework for extracting GPDs from exclusive photon electroproduction