Speaker
Yao Ji
(TUM)
Description
In this talk, I will present our recent results for the kinematic corrections beyond the twist-four accuracy to the
deeply-virtual Compton scattering (DVCS) of a spin-1/2 target. Phenomenologically, such corrections are crucial for
removing the reference frame dependence when extracting the generalized parton distribution (GPD) from experimental
data. Theoretically, the kinematic corrections are also necessary for restoring the translation and gauge invariance
of the Compton amplitude. Our calculation shows explicit cancellation of the infrared divergences at the leading
order in $\alpha_$. Further numerical analysis indicates that the target mass corrections remain small, hence
validating factorizations for coherent DVCS on nuclei.
Primary authors
Vladimir Braun
(University of Regensburg)
Yao Ji
(TUM)
Alexander Manashov
(UNI/TH (Uni Hamburg, Institut fuer Theoretische Physik))
