Speaker
Yao Ji
Description
Deeply-virtual Compton scattering gives access to the generalized parton distributions that encode the information on the transverse position of quarks and gluons in the proton with dependence on their longitudinal momentum. In anticipation of the high-precision experimental data and prominent gluon contribution in a broad kinematic range from the Electron-Ion Collider, we have calculated the NNLO DVCS coefficient functions of the flavor-singlet sector associated with the dominant Compton form factors $H$ and $E$ at large energies. This calculation is crucial for bringing perturbative gluon contributions under theory control. Numerical analysis suggests the NNLO corrections to the imaginary part of $H$ are rather large.
Author
Yao Ji
Co-authors
Prof.
Vladimir Braun
(University of Regensburg)
Mr
Jakob Schoenleber
(University of Regensburg)
