188 citations · 738 across the 16 of their papers we have counts for
16 papers
Exploring Baryon Resonances with Transition Generalized Parton Distributions: Status and Perspectives
Stefan Diehl, Kyungseon Joo, Kirill Semenov-Tian-Shansky +21
QCD gives rise to a rich spectrum of excited baryon states. Understanding their internal structure is important for many areas of nuclear physics, such as nuclear forces, dense mat…
From hard exclusive meson electroproduction to deeply virtual Compton scattering
Peter Kroll, Hervé Moutarde, Franck Sabatié
We systematically evaluate observables for hard exclusive electroproduction of real photons and compare them to experiment using a set of Generalized Parton Distributions (GPDs) wh…
Transversity in exclusive electroproduction of pseudoscalar mesons
P. Kroll
In this talk it is reported on an analysis of hard exclusive electroproduction of pseudoscalar mesons within the handbag approach. It is argued that recent measurements of pion ele…
What did we learn about GPDs from hard exclusive electroproduction of mesons?
P. Kroll
It is reported on an analysis of electroproduction of light mesons at small Bjorken-x within the handbag approach. The partonic subprocesses, meson electroproduction off quarks or…
Form factors and other measures of strangeness in the nucleon
M. Diehl, Th. Feldmann, P. Kroll
We discuss the phenomenology of strange-quark dynamics in the nucleon, based on experimental and theoretical results for electroweak form factors and for parton densities. In parti…
Isospin symmetry breaking through pi^0 - eta -eta' mixing
P. Kroll
Mixing of the pseudoscalar mesons is discussed in the quark-flavor basis. The divergences of the axial vector currents which embody the axial vector anomaly, combined with the assu…
Mixing of pseudoscalar mesons and isospin symmetry breaking
P. Kroll
Mixing of the pseudoscalar mesons is discussed in the quark-flavor basis with the hypothesis that the basis decay constants follow the pattern of particle state mixing. The diverge…
Mixing of Pseudoscalar Mesons
Th. Feldmann, P. Kroll
Eta-eta' mixing is discussed in the quark-flavor basis with the hypothesis that the decay constants follow the pattern of particle state mixing. On exploiting the divergences of th…
The annihilation of virtual photons into pseudoscalar mesons
M. Diehl, P. Kroll, C. Vogt
We investigate the possibility to constrain the pion distribution amplitude from the gamma* gamma* -> pi transition. For a surprisingly large range in the two photon virtualities w…
The Overlap Representation of Skewed Quark and Gluon Distributions
M. Diehl, Th. Feldmann, R. Jakob +1
Within the framework of light-cone quantisation we derive the complete and exact overlap representation of skewed parton distributions for unpolarised and polarised quarks and gluo…
Implications of light-quark admixtures on charmonium decays into meson pairs
Th. Feldmann, P. Kroll
We argue that charmonium decays into meson pairs fall into two distinct classes: one that is under control of perturbative QCD and another one that is governed by a soft mechanism.…
The perturbative limit of the two-pion distribution amplitude
M. Diehl, Th. Feldmann, P. Kroll +1
We consider pion pair production in two-photon collisions, gamma* gamma -> pi+ pi-, at large photon virtuality Q^2 and center-of-mass energy \sqrt{s} in the hard-scattering picture…
Skewed parton distributions for B->pi transitions
Th. Feldmann, P. Kroll
We investigate the b-u skewed parton distributions (SPDs) for B->pi transitions and determine the contributions from several sources (overlaps of soft light-cone wave functions, qu…
Linking Parton Distributions to Form Factors and Compton Scattering
M. Diehl, T. Feldmann, R. Jakob +1
We relate ordinary and skewed parton distributions to soft overlap contributions to elastic form factors and large angle Compton scattering, using light-cone wave functions in a Fo…
Predictions for the eta_c-gamma transition form factor
T. Feldmann, P. Kroll
The eta_c-gamma transition form factor is calculated in a model based on a modified hard scattering approach to exclusive reactions, in which transverse degrees of freedom are take…
A Critical Analysis of the Proton Form Factor with Sudakov Suppression and Intrinsic Transverse Momentum
J. Bolz, R. Jakob, P. Kroll +2
The behavior of the proton magnetic form factor is studied within the modified hard scattering picture, which takes into account gluonic radiative corrections in terms of transvers…