Deeply Virtual Compton Scattering Beam-Spin Asymmetries

Abstract

The beam spin asymmetries in the hard exclusive electroproduction of photons on the proton (ep -> epg) were measured over a wide kinematic range and with high statistical accuracy. These asymmetries result from the interference of the Bethe-Heitler process and of deeply virtual Compton scattering. Over the whole kinematic range (x_B from 0.11 to 0.58, Q^2 from 1 to 4.8 GeV^2, -t from 0.09 to 1.8 GeV^2), the azimuthal dependence of the asymmetries is compatible with expectations from leading-twist dominance, A = a*sin(phi)/[1+c*cos(phi)]. This extensive set of data can thus be used to constrain significantly the generalized parton distributions of the nucleon in the valence quark sector.

1 tex file (6 pages), 4 (eps) figures

References in corpus (2)

• Beam spin asymmetry in deep and exclusive pi0 electroproduction
• Unitary constraints on Deeply Virtual Compton Scattering

Cited by in corpus (106)

• The Spin Structure of the Nucleon
• Forces inside hadrons: pressure, surface tension, mechanical radius, and all that
• Generalized Parton Distributions in the valence region from Deeply Virtual Compton Scattering
• GPD phenomenology and DVCS fitting - Entering the high-precision era
• Deeply virtual Compton scattering at small x_B and the access to the GPD H
• Hadron structure from lattice quantum chromodynamics
• Deeply Virtual Compton Scattering off the neutron
• Cross sections for the exclusive photon electroproduction on the proton and Generalized Parton Distributions
• From hard exclusive meson electroproduction to deeply virtual Compton scattering
• Flexible Parametrization of Generalized Parton Distributions from Deeply Virtual Compton Scattering Observables
• Nucleon Tensor Charge from Exclusive ${\pi }^o$ Electroproduction
• The E00-110 experiment in Jefferson Lab's Hall A: Deeply Virtual Compton Scattering off the Proton at 6 GeV
• Gluon gravitational structure of hadrons of different spin
• Beam-helicity and beam-charge asymmetries associated with deeply virtual Compton scattering on the unpolarised proton
• The Hadronic Final State at HERA
• On timelike and spacelike deeply virtual Compton scattering at next to leading order
• Precision Studies of QCD in the Low Energy Domain of the EIC
• Nucleon structure from basis light-front quantization
• Energy-momentum tensor form factors of the nucleon in nuclear matter
• Measurement of double-spin asymmetries associated with deeply virtual Compton scattering on a transversely polarized hydrogen target
• Exclusive electroproduction revisited: treating kinematical effects
• Deeply Virtual Compton Scattering to the twist-four accuracy: Impact of finite-$t$ and target mass corrections
• The Present and Future of QCD
• Unbiased determination of DVCS Compton Form Factors
• Beam-helicity asymmetry arising from deeply virtual Compton scattering measured with kinematically complete event reconstruction
• A fitter code for Deep Virtual Compton Scattering and Generalized Parton Distributions
• Single and double spin asymmetries for deeply virtual Compton scattering measured with CLAS and a longitudinally polarized proton target
• Interpretation of the Flavor Dependence of Nucleon Form Factors in a Generalized Parton Distribution Model
• Sum rules and dualities for generalized parton distributions: is there a holographic principle?
• Phenomenological assessment of proton mechanical properties from deeply virtual Compton scattering
• Exclusive ${\rho }^0$ electroproduction on the proton at CLAS
• Description and interpretation of DVCS measurements
• From Bethe-Salpeter Wave Functions to Generalised Parton Distributions
• A Glimpse of Gluons through Deeply Virtual Compton Scattering on the Proton
• Border and skewness functions from a leading order fit to DVCS data
• Generalized Parton Distributions from Deep Virtual Compton Scattering at CLAS
• Generalized Parton Distributions from Deeply Virtual Compton Scattering at HERMES
• Separation of contributions from deeply virtual Compton scattering and its interference with the Bethe--Heitler process in measurements on a hydrogen target
• Longitudinal target-spin asymmetries for deeply virtual Compton scattering
• Test of two new parameterizations of the Generalized Parton Distribution $H$
• Radial excitations of Q-balls, and their D-term
• Constraints on the $\tilde{H}$ Generalized Parton Distribution from Deep Virtual Compton Scattering Measured at HERMES
• Deeply Virtual Compton Scattering at a Proposed High-Luminosity Electron-Ion Collider
• Generalized Parton Distributions: visions, basics, and realities
• An experimental program with high duty-cycle polarized and unpolarized positron beams at Jefferson Lab
• Energy momentum tensor, stability, and the D-term of Q-balls
• Measurement of azimuthal asymmetries associated with deeply virtual Compton scattering on an unpolarized deuterium target
• Extraction of the Compton Form Factor H from DVCS measurements at Jefferson Lab
• HERMES impact for the access of Compton form factors
• First Exclusive Measurement of Deeply Virtual Compton Scattering off ${}^4$He: Toward the 3D Tomography of Nuclei
• Deeply virtual Compton scattering on a virtual pion target
• Deeply virtual Compton scattering cross section at high Bjorken $x_B$
• Precise Measurements of Beam Spin Asymmetries in Semi-Inclusive ${\pi }^0$ production
• Where do we stand with a 3-D picture of the proton?
• First-time measurement of Timelike Compton Scattering
• Helicity-dependent generalized parton distributions for nonzero skewness
• Exploring the Structure of the Bound Proton with Deeply Virtual Compton Scattering
• Generalized Parton Distributions from Hadronic Observables: Non-Zero Skewness
• Spatial imaging of proton via leading-twist non-skewed GPDs with basis light-front quantization
• 2D energy-momentum tensor distributions of nucleon in a large-$N_c$ quark model from ultra-relativistic to non-relativistic limit
• Genuine empirical pressure within the proton
• Exclusive $\eta$ electroproduction at $W>2$ GeV with CLAS and transversity generalized parton distributions
• Higher-Order Kinematical Effects in Deeply Virtual Compton Scattering
• Extraction of beam-spin asymmetries from the hard exclusive ${\pi }^{+}$ channel off protons in a wide range of kinematics
• Progress and Opportunities in Backward angle (u-channel) Physics
• Advances in diffraction of subnuclear waves
• Resumming soft and collinear contributions in deeply virtual Compton scattering
• Twist-three cross-sections in deeply virtual Compton scattering
• Twist-3 Generalized Parton Distribution for the Proton from Basis Light-Front Quantization
• Prospects for quarkonium studies at the high-luminosity LHC
• Gluon contribution to the mechanical properties of a dressed quark in light-front Hamiltonian QCD
• Generalized parton distributions in the soft-wall model of AdS/QCD
• Measurement of Unpolarized and Polarized Cross Sections for Deeply Virtual Compton Scattering on the Proton at Jefferson Laboratory with CLAS
• Effect of the pion field on the distributions of pressure and shear in the proton
• Catching a glimpse of the parton structure of the bound proton
• Generalized Parton Distributions and Deeply Virtual Compton Scattering
• Spectator-Tagged Deeply Virtual Compton Scattering on Light Nuclei
• Generalized form factors of the nucleon in a light-cone spectator-diquark model
• Radiative effects in the processes of exclusive photon electroproduction from polarized protons
• Double Helicity Dependence of Jet Properties from Dihadrons in Longitudinally Polarized p+p Collisions at sqrt(s) = 200 GeV
• Incoherent deeply virtual Compton scattering off ${}^4$He
• Wigner distributions and GTMDs in a proton using light-front quark-diquark model
• Deeply Virtual Exclusive Processes and Generalized Parton Distributions
• A Radial Time Projection Chamber for $\alpha$ detection in CLAS at JLab
• Discussion on the recent proton-DVCS results of Jefferson Lab
• Studies of spin-orbit correlations at JLAB
• Radiative effects in deep virtual Compton scattering
• Deciphering Twist-3 Chiral-Even GPDs in the Light-Front Quark-Diquark Model
• Six-dimensional light-front Wigner distributions of the proton
• QED radiative effects in the processes of exclusive photon electroproduction from polarized protons with the next-to-leading accuracy
• GPDs from present and future measurements
• Deeply virtual Compton scattering in the tensor-pomeron approach
• Spin Physics: Session Summary
• Nucleon Structure from Basis Light-Front Quantization : Status and Prospects
• On Deeply Virtual Compton Scattering at next-to-leading order
• Deeply Virtual Pseudoscalar Meson Production with CLAS
• Lepton mass effects in the Bethe-Heitler process
• Unified and optimal frame choice for generalized parton distributions
• Neutron DVCS Measurements with BONuS12 in CLAS12
• Beam Spin Asymmetries in DVCS with CLAS at 4 .8 GeV
• Deeply virtual Compton scattering off the neutron
• Parton promenade into the nucleon
• Probing hard/soft factorization via beam-spin asymmetry in exclusive pion electroproduction from the proton
• New framework for extracting GPDs from exclusive photon electroproduction
• Virtual Compton Scattering and Neutral Pion Electroproduction in the Resonance Region up to the Deep Inelastic Region at Backward Angles
• Positrons at JLab - Advancing Nuclear Science in Hall B