1. Regge phenomenology of the N∗ and Δ∗ poles
- Author
-
Silva-Castro, J. A., Fernández-Ramírez, C., Albaladejo, M., Danilkin, I. V., Jackura, A., Mathieu, V., Nys, J., Pilloni, A., Szczepaniak, A. P., and Fox, G.
- Subjects
DYNAMICS ,high energy ,Physics and Astronomy (miscellaneous) ,High Energy Physics::Lattice ,High Energy Physics::Phenomenology ,ANALYTIC PROPERTIES ,PARTIAL-WAVES ,Computer Science::Digital Libraries ,MESONS ,Physics and Astronomy ,RELATIVISTIC QUARK-MODEL ,ALGEBRAIC MODELS ,High Energy Physics::Experiment ,pion photoproduction ,HADRON STRUCTURE ,TRAJECTORIES ,AMPLITUDES - Abstract
We use Regge phenomenology to study the structure of the poles of the N* and Δ* spectrum. We employ the available pole extractions from partial wave analysis of meson scattering and photoproduction data. We assess the importance of the imaginary part of the poles (widths) to obtain a consistent determination of the parameters of the Regge trajectory. We compare the several pole extractions and show how Regge phenomenology can be used to gain insight into the internal structure of baryons. We find that the majority of the states in the parent Regge trajectories are compatible with a mostly compact three-quark state picture.
- Published
- 2019