Inhaltszusammenfassung

First measurements of pion photoproduction using circularly polarized photons on longitudinally polarized protons were carried out at MAMI (Mainz) in the energy range E-gamma = 140-800 MeV. Preliminary results of the helicity dependence of the total inclusive photoabsorption cross section in the full energy range and of the partial reaction channels gammap --> p pi (0) and gammap --> n pi (+) in the Delta region are now available. These data provide new input for multipole analyses and determ...First measurements of pion photoproduction using circularly polarized photons on longitudinally polarized protons were carried out at MAMI (Mainz) in the energy range E-gamma = 140-800 MeV. Preliminary results of the helicity dependence of the total inclusive photoabsorption cross section in the full energy range and of the partial reaction channels gammap --> p pi (0) and gammap --> n pi (+) in the Delta region are now available. These data provide new input for multipole analyses and determine the main contribution to the Gerasimov-Drell-Hearn (GDH) integral and the forward spin polarizability gamma (0).» weiterlesen» einklappen

Autoren

Klassifikation

DFG Fachgebiet:
Teilchen, Kerne und Felder

DDC Sachgruppe:
Physik