Eur. Phys. J. A (2008) 36: 61-72
https://doi.org/10.1140/epja/i2007-10551-x

Regular Article - Theoretical Physics

Analysis of angular distributions in γN → πeta;N

Institut für Kernphysik, Johannes Gutenberg-Universität Mainz, D-55099, Mainz, Germany

^* e-mail: fix@mph.phtd.tpu.edu.ru

Received: 17 December 2007
Accepted: 11 March 2008
Published online: 9 April 2008

Abstract

Angular distributions in the final state of π⁰η photoproduction on nucleons are considered. As a formal base the familiar isobar model is used in which the π⁰ηN state is a product of the resonance decay into ηΔ(1232) and πS ₁₁(1535) channels. One of the principal assumptions used is that in the actual energy region the reaction is dominated by a single resonance state. The developed formalism can serve as a tool for testing spin and parity of that resonance.