A Dynamical Model for the Resonant Multipoles and the $Δ$ Structure
| dc.creator | Kamalov, S. S. | |
| dc.creator | Yang, S. N. | |
| dc.date | 2000-05-03 | |
| dc.date | 2000-05-04 | |
| dc.date.accessioned | 2026-07-07T05:38:03Z | |
| dc.date.available | 2026-07-07T05:38:03Z | |
| dc.description | We show that recent experiment data for the ratios $E_{1^+}/M_{1^+}$ and $S_{1^+}/M_{1^+}$ can be explained in a dynamical model for electromagnetic production of pions, together with a simple scaling assumption for the bare $γ^* N Δ$ form factors. Within our model we find that the bare $Δ$ is almost spherical and the electric E2 and Coulomb C2 quadrupole excitations of the physical $Δ$ are nearly saturated by pion cloud contribution in $Q^2 \le 4.0 GeV^2$. | |
| dc.description | 8 pages, 2 figures, to appear in the Proc. of "NSTAR2000 - The Physics of Excited Nucleons", Feb. 16-19, 2000, Jefferson Lab, USA, World Scientific, Singapore, 2000 | |
| dc.identifier | https://arxiv.org/abs/nucl-th/0005007 | |
| dc.identifier | http://arxiv.org/abs/nucl-th/0005007 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/81487 | |
| dc.subject | Nuclear Theory | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | A Dynamical Model for the Resonant Multipoles and the $Δ$ Structure | |
| dc.type | text |