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Proton mass effects in wide-angle Compton scattering
M. Diehl, Th. Feldmann, H. W. Huang +1
We investigate proton mass effects in the handbag approach to wide-angle Compton scattering. We find that theoretical uncertainties due to the proton mass are significant for photo…
Spontaneously Broken Chiral Symmetry and Hard QCD Phenomena
M. J. Amarian, V. M. Braun, S. J. Brodsky +28
These are the mini-proceedings of the workshop ``Spontaneously Broken Chiral Symmetry and Hard QCD Phenomena" held at the Physikzentrum Bad Honnef from July 15 to 19, 2002. Every a…
Power corrections in heavy-to-light decays at large recoil energy
M. Diehl
I briefly present recent work on QCD power corrections in heavy-to-light meson decays, using an effective field theory approach.
Two-Photon Annihilation into Baryon-Antibaryon Pairs
M. Diehl, P. Kroll, C. Vogt
We study the handbag contribution to two-photon annihilation into baryon-antibaryon pairs at large energy and momentum transfer. We derive factorization of the process amplitude in…
Soft-collinear effective theory and heavy-to-light currents beyond leading power
M. Beneke, A. P. Chapovsky, M. Diehl +1
An important unresolved question in strong interaction physics concerns the parameterization of power-suppressed long-distance effects to hard processes that do not admit an operat…
Generalized parton distributions in impact parameter space
M. Diehl
We study generalized parton distributions in the impact parameter representation, including the case of nonzero skewness xi. Using Lorentz invariance, and expressing parton distrib…