Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
2009-01-25
Eur. Phys. J. A 42, 141-149 (2009)
Physics
High Energy Physics
High Energy Physics - Experiment
9 pages, 11 figures
Scientific paper
10.1140/epja/i2009-10868-4
Total and differential cross sections for the reaction gamma p -> pi^o eta p have been measured with the Crystal Ball/TAPS detector using the tagged photon facility at the MAMI C accelerator in Mainz. In the energy range E_gamma=0.95-1.4 GeV the reaction is dominated by the excitation and sequential decay of the Delta(1700)D33 resonance. Angular distributions measured with high statistics allow us to determine the ratio of hadronic decay widths \Gamma_{\eta \Delta}/\Gamma_{\pi S11} and the ratio of the helicity amplitudes A_{3/2}/A_{1/2} for this resonance.
Aguar-Bartolome P.
Akasoy L. K.
Annand J. R. M.
Arends H.-J.
Bantawa K.
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