Analysis of Experimental Data on the Reaction γN → ηN with an Exotic Narrow Resonance

Resumo

The isospin structure of the well-established s-wave resonances N(1535)1/2– and N(1650)1/2^– in the presence of a hypothesized narrow resonance N(1670)/1/2⁺ in the amplitude of the reaction γn → ηn is considered as a function of results of two different experiments on the photoproduction of η-mesons on deuterons.