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First measurement of the helicity asymmetry for in the resonance region
M. Gottschall, A. V. Anisovich, B. Bantes +64
The first measurement of the helicity dependence of the photoproduction cross section of single neutral pions off protons is reported for photon energies from 600 to 2300\,MeV, cov…
Determination of the η'-nucleus optical potential
M. Nanova, V. Metag, E. Ya. Paryev +59
The excitation function and momentum distribution of mesons have been measured in photon induced reactions on C in the energy range of 1250-2600 MeV. The experi…
Sign ambiguity in the K Sigma channel
A. V. Anisovich, E. Klempt, V. A. Nikonov +2
Ambiguities of the signs of coupling constants are studied in a multichannel partial wave analysis of a large body of pion and photo-induced reactions. It is shown that t…
Study of ambiguities in scattering amplitudes
A. V. Anisovich, R. Beck, E. Klempt +4
Amplitudes for the reaction are reconstructed from data on the differential cross section , the recoil polarization , and on the spin rotation parameter $β…
Helicity amplitudes for photoexcitation of nucleon resonances off neutrons
A. V. Anisovich, V. Burkert, E. Klempt +3
The helicity amplitudes and for the photoexcitation of nucleon resonances off neutrons are determined in a multi-channel partial-wave analysis.