$πNN$ and $πNΔ$ formfactors determined from a microscopic model for $πN$ scattering
| dc.creator | Schütz, C. | |
| dc.creator | Holinde, K. | |
| dc.date | 1995-08-11 | |
| dc.date.accessioned | 2026-07-07T11:15:26Z | |
| dc.date.available | 2026-07-07T11:15:26Z | |
| dc.description | We determine the $πNN$ and $πNΔ$ formfactors from the $P_{11}$ resp. $P_{33}$ partial wave of $πN$ scattering by dressing corresponding bare vertices with the help of $πN$ non--pole contributions. The underlying model is based on meson exchange, and involves nucleon and delta--isobar pole and crossed--pole terms together with correlated $ππ$--exchange in the $J^P=0^+$ ($σ$) and $1^-$ ($ρ$) channel. The results are very similar for $πNN$ and $πNΔ$ and can be roughly parametrized by a monopole with cutoff mass $>$ 500 MeV, with some variation due to model dependencies. Thus the formfactors are much less soft than derived before for the $πNN$ case by Saito and Afnan using the same procedure but different $πN$ interaction models. | |
| dc.description | 7 pages, 4 postscript figures | |
| dc.identifier | https://arxiv.org/abs/nucl-th/9508021 | |
| dc.identifier | http://arxiv.org/abs/nucl-th/9508021 | |
| dc.identifier | Phys.Rev.C54:1561-1565,1996 | |
| dc.identifier | doi:10.1103/PhysRevC.54.1561 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/192388 | |
| dc.subject | Nuclear Theory | |
| dc.title | $πNN$ and $πNΔ$ formfactors determined from a microscopic model for $πN$ scattering | |
| dc.type | text |