Analysis of angular distributions in gamma N \to pi0 eta N

TL;DR

This paper develops a formalism based on the isobar model to analyze angular distributions in gamma N to pi0 eta N reactions, aiming to test the resonance's spin and parity.

Contribution

It introduces a formalism for analyzing angular distributions in pi0-eta photoproduction, assuming dominance of a single resonance, to determine resonance properties.

Findings

Formalism for angular distribution analysis developed

Method to test resonance spin and parity proposed

Applicable to single-resonance dominated energy regions

Abstract

Angular distributions in the final state of pi0-eta photoproduction on nucleons are considered. As a formal base the familiar isobar model is used in which the (pi0 eta N) state is a product of the resonance decay into eta-Delta(1232) and pi-S_{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.