Photoproduction of on protons and the (1700)D33 -resonance

Crystal Ball at MAMI, TAPS, and A2 … - The European Physical …, 2009 - Springer
Crystal Ball at MAMI, TAPS, and A2 Collaborations, VL Kashevarov, A Fix…
The European Physical Journal A, 2009Springer
Total and differential cross-sections for the reaction \ensuremathγp→π^0ηp 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 \ensuremathE_γ=0.95--1.4 GeV the reaction is
dominated by the excitation and sequential decay of the \ensuremathΔ(1700)D_33-
resonance. Angular distributions measured with high statistics allow us to determine the
ratio of hadronic decay widths \ensuremathηΔ/πS_11 and the ratio of the helicity amplitudes …
Abstract
Total and differential cross-sections for the reaction 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 GeV the reaction is dominated by the excitation and sequential decay of the -resonance. Angular distributions measured with high statistics allow us to determine the ratio of hadronic decay widths and the ratio of the helicity amplitudes for this resonance.
Springer