Diphoton Generalized Distribution Amplitudes

Abstract

We calculate the leading order diphoton generalized distribution amplitude by calculating the amplitude of the process gamma* gamma -> gamma gamma in the low energy and high photon virtuality region at the Born order and in the leading logarithmic approximation. As in the case of the anomalous photon structure functions, the gamma gamma generalized distribution amplitude exhibits a characteristic \ln Q^2 behaviour and obeys inhomogeneous evolution equations.

15 pages, 5 figures

References in corpus (15)

• Wave Functions, Evolution Equations and Evolution Kernels from Light-Ray Operators of QCD
• The Uses of Conformal Symmetry in QCD
• Probing partonic structure in gamma* gamma -> pi pi near threshold
• Photon Distribution Amplitudes in QCD
• Exclusive production of pion pairs in gamma^* gamma collisions at large Q^2
• Theory of hard photoproduction
• Tomography for amplitudes of hard exclusive processes
• Search for isotensor exotic meson and twist 4 contribution to ${\gamma }^{\ast }\gamma \to \rho \rho$
• Impact Representation of Generalized Distribution Amplitudes
• On $\gamma {\gamma }^{\ast }$ production of two ${\rho }^0$ mesons
• Deeply Virtual Compton Scattering on a Photon and Generalized Parton Distributions in the Photon
• Dual parameterization of generalized parton distributions and description of DVCS data
• Exclusive photoproduction of hard dijets and magnetic susceptibility of QCD vacuum
• Forward-like functions for dual parametrization of GPDs from nonlocal chiral quark model
• Exclusive two ${\rho }^0$-mesons production in $\gamma {\gamma }^{\ast }$ collision

Cited by in corpus (11)

• Generalized Parton Distributions: visions, basics, and realities
• Basis light-front quantization approach to photon
• Analyticity and sum rules for photon GPDs
• Polynomiality sum rules for generalized parton distributions of spin-1 targets
• Spatial densities of the photon on the light front
• Generalized Parton Distributions of the Photon in Position Space
• Generalized Parton Distributions of the Photon for Nonzero zeta
• Generalized Parton Distributions of the Photon with Helicity Flip
• Generalized Parton Distributions of the Photon
• Inverse Radon transform at work
• Analytic Evolution of Singular Distribution Amplitudes in QCD