Abstract
Properties of nucleon and Δ resonances are derived from a multichannel partial wave analysis of pion and photo-induced reactions off protons. This paper summarizes the latest results on masses, widths, and decay properties of nucleon and Δ resonances.
Highlights
Existence and properties of most N and Δ resonances listed in the Review of Particle Properties [1] were derived from partial wave analyses of πN elastic and charge exchange scattering data [2,3,4,5]
The existing database was not sufficient to extract a reliable spectrum of N and Δ resonances from pion-induced reactions alone
An impressive amount of photoinduced reactions has been studied at ELSA, GRAAL, Jlab, MAMI, and SPring-8, and the situation has changed significantly
Summary
Existence and properties of most N and Δ resonances listed in the Review of Particle Properties [1] were derived from partial wave analyses of πN elastic and charge exchange scattering data [2,3,4,5]. Additional information on their decay modes was obtained from inelastic reactions, from πN → N η, ΛK, ΣK and from an isobar model study of πN → N ππ; photoproduction experiments provided information on the photo-coupling. Reactions like γp → pπ0, nπ+, pη, pπ0π0, pπ+π−, pπ0η, ΛK+, Σ0K+, and Σ+Ks0 have been studied, some of them in great detail
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
