6533b82cfe1ef96bd128eac4
RESEARCH PRODUCT
A model for the γN → ππN reaction
J. A. Gómez TejedorEulogi Osetsubject
BaryonPhysicsCross section (physics)symbols.namesakesymbolsIntermediate stateFeynman diagramAtomic physicsResonance (particle physics)Simulationdescription
We have studied the γN→ππN reaction using a model which includes N, Δ(1232), N*(1440) and N*(1520) intermediate baryonic states and the ρ-meson as intermediate ππ resonance. The model reproduces fairly well experimental cross sections below E γ = 800 MeV and invariant-mass distributions even at higher energies. One of the interesting findings of the study is that the γ N →N*(1520) → Δπ process is very important and interferes strongly with the dominant Δ-Kroll-Ruderman term to produce the experimental peak of the cross section.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1995-01-01 |