57 citations · 128 across the 6 of their papers we have counts for
7 papers
Electromagnetic transition form factors of the Roper resonance in effective field theory
T. Bauer, S. Scherer, L. Tiator
We analyze the form factors of the electromagnetic nucleon-to-Roper-resonance transition in the framework of low-energy effective field theory. A systematic power-counting procedur…
Pion polarizabilities: No conflict between dispersion theory and ChPT
B. Pasquini, D. Drechsel, S. Scherer
Recent attempts to determine the pion polarizability by dispersion relations yield values that disagree with the predictions of chiral perturbation theory. These dispersion relatio…
Generalized Polarizabilities in a Constituent Quark Model
B. Pasquini, S. Scherer, D. Drechsel
We discuss low-energy virtual Compton scattering off the proton within the framework of a nonrelativistic constituent quark model. A simple interpretation of the spin-averaged gene…
Generalized dipole polarizabilities and the spatial structure of hadrons
A. I. L'vov, S. Scherer, B. Pasquini +2
We present a phenomenological discussion of spin-independent, generalized dipole polarizabilities of hadrons entering the virtual Compton scattering process gamma* h -> gamma h. We…
Polarization Phenomena in Small-Angle Photoproduction of e+e- Pairs and the Gerasimov-Drell-Hearn Sum Rule
A. I. L'vov, S. Scopetta, D. Drechsel +1
Photoproduction of pairs at small angles is investigated as a tool to determine the functions and entering the real-photon forward Compton scattering amplitude…
Generalized polarizabilities and the spin-averaged amplitude in virtual Compton scattering off the nucleon
D. Drechsel, G. Knoechlein, A. Metz +1
We discuss the low-energy behavior of the spin-averaged amplitude of virtual Compton scattering (VCS) off a nucleon. Based on gauge invariance, Lorentz invariance and the discrete…