548 citations · 799 across the 6 of their papers we have counts for
7 papers
Multipole Analysis of a Benchmark Data Set for Pion Photoproduction
R. A. Arndt, I. Aznauryan, R. M. Davidson +8
We have fitted low- and medium-energy benchmark datasets employing methods used in the MAID/SAID and dynamical model analyses. Independent fits from the Mainz, RPI, Yerevan, and Kh…
The E2/M1 and C2/M1 ratios and form factors in N -> Delta transitions
L. Tiator, D. Drechsel, O. Hanstein +2
A partial wave analysis of pion photoproduction has been obtained in the framework of fixed-t dispersion relations valid from threshold up to 500 MeV. In the resonance region we ha…
A unitary isobar model for pion photo- and electroproduction on the proton up to 1 GeV
D. Drechsel, O. Hanstein, S. S. Kamalov +1
A new operator for pion photo- and electroproduction has been developed for nuclear applications at photon equivalent energies up to 1 GeV. The model contains Born terms, vector me…
Dispersion relations and the spin polarizabilities of the nucleon
D. Drechsel, G. Krein, O. Hanstein
A forward dispersion calculation is implemented for the spin polarizabilities of the proton and the neutron. These polarizabilities are related to the spin structur…
Multipole analysis of pion photoproduction based on fixed t dispersion relations and unitarity
O. Hanstein, D. Drechsel, L. Tiator
We have analysed pion photoproduction imposing constraints from fixed t dispersion relations and unitarity. Coupled integral equations for the S and P wave multipoles were derived…
A dispersion theoretical approach to the threshold amplitudes of pion photoproduction
O. Hanstein, D. Drechsel, L. Tiator
We give predictions for the partial wave amplitudes of pion photoproduction near threshold by means of dispersion relations at fixed t. The free parameters of this approach are det…