[Jlab-seminars] Theory Center Seminar

[Mary Fox]

Theory Center Seminar
Wed., Aug. 5, 2009
3:00 p.m.
CEBAF Center, Room F113

*Importance of Lepton Current in Deeply Virtual Compton Scattering *

Chueng-Ryong Ji
North Carolina State University

We discuss the issue of singularity in the lepton current for the
kinematics of extracting the generalized Parton distribution (GPD) from
the deeply virtual Compton scattering (DVCS). It reveals an importance of
the contributions that were often neglected in the reduced calculation
using the GPD formulation. We present the full calculation of the tree
level Compton scattering amplitude and discuss what has been missed in the
reduced calculation of the GPD formulation.
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