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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…
Electromagnetic Production of the Hypertriton
T. Mart, L. Tiator, D. Drechsel +1
Kaon photoproduction on He3, gamma + He3 --> K+ + Hypertriton, is studied in the framework of the impulse approximation. Realistic He3 wave functions obtained as solutions of Fadde…
New Insights into the Coupling of and Mesons to the Nucleon
M. Kirchbach, L. Tiator, S. Neumeier +1
We show that the contact couplings of neutral pseudoscalar and axial mesons to the nucleon are proportional to , the fraction of nucleon spin carried by the strange quark sea,…
The position and the residues of the delta resonance pole in pion photoproduction
O. Hanstein, D. Drechsel, L. Tiator
We have analyzed the and multipole amplitudes of pion photoproduction in the framework of fixed- dispersion relations. Applying the speed plot…
Elastic Pion Scattering on the Deuteron in a Multiple Scattering Model
S. S. Kamalov, L. Tiator, C. Bennhold
Pion elastic scattering on deuterium is studied in the KMT multiple scattering approach developed in momentum space. Using a Paris wave function and the same methods and approximat…
On the Coupling of the Meson to the Nucleon
M. Kirchbach, L. Tiator
The pseudoscalar and pseudovector coupling constants are calculated from an effective vertex associated with the triangle diagram. The predicted values are in agr…