644 citations · 4.2k across the 124 of their papers we have counts for
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The handbag contribution to gamma gamma to pi pi and K K
M. Diehl, P. Kroll, C. Vogt
We investigate the soft handbag contribution to two-photon annihilation into pion or kaon pairs at large energy and momentum transfer. The amplitude is expressed as a hard gamma ga…
The transition of virtual photons into pseudoscalar mesons
P. Kroll
The possibility to constrain the meson distribution amplitude from the transitions of virtual photons to pseudoscalar mesons is investigated. It is shown that for a large range in…
Perturbative and non-perturbative QCD corrections to wide-angle Compton scattering
H. W. Huang, P. Kroll, T. Morii
We investigate corrections to the handbag approach for wide-angle Compton scattering off protons at moderately large momentum transfer: the photon-parton subprocess is calculated t…
Generalized parton distributions at large momentum transfer
P. Kroll
The role of generalized parton distributions in wide-angle exclusive reactions will be discussed. In contrast to deep virtual exclusive reactions the wide angle processes offer the…
The photon-pion transition form factor for virtual photons
M. Diehl, P. Kroll, C. Vogt
We discuss the photon to meson transition form factor for virtual photons, which can be measured in e+ e- collisions. We demonstrate that this form factor is independent of the sha…