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Theory Center Seminar<br>
Monday, May 13, 2013<br>
CEBAF Center, Room L102<br>
1:00 p.m. (coffee at 12:45 p.m.)<br>
<br>
<br>
Vladimir Braun<br>
University of Regensburg<br>
<br>
<b>Finite-t and Target Mass Corrections in Deeply Virtual Compton
Scattering</b><br>
<br>
I present an approach to calculate 'kinematic' power corrections to
DVCS. Topics covered are:<br>
1) Rigorous separation of 'kinematic' and 'dynamic' higher-twists<br>
2) Technique to calculate LO contributions based on conformal
symmetry<br>
3) Gauge and translation invariance<br>
4) QCD factorization of kinematic power corrections to twist-4
accuracy<br>
5) Numerical estimates for the size of such corrections in helicity
amplitudes and (preliminary) Compton <br>
form factors
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