The low-energy constants of the pion-nucleon system
| dc.creator | Matsinos, E. | |
| dc.date | 1998-07-16 | |
| dc.date.accessioned | 2026-07-07T04:04:19Z | |
| dc.date.available | 2026-07-07T04:04:19Z | |
| dc.description | Recent analyses of low-energy pion-nucleon experimental data have provided clear evidence for the violation of the isospin symmetry of the strong interaction. In the present work, it is shown that the single-charge-exchange reaction is the culprit for the effect. Given the present experimental uncertainties, no evidence for isospin breaking was found in the two elastic-scattering processes for pion laboratory kinetic energies between 20 and 100 MeV. In agreement with most of the recent determinations, the value for the charged-pion coupling constant, extracted herein, is `small'. The energy dependence of the s- and p-wave hadronic phase shifts, obtained from low-energy elastic-scattering data exclusively, as well as their values in tabular form (including meaningful uncertainties), are provided. Discrepancies with two `standard' phase-shift solutions in the s-wave part of the interaction are seen; small differences may be observed in three of the p-wave channels. | |
| dc.description | 20 pages, 5 figures, LaTeX | |
| dc.identifier | https://arxiv.org/abs/hep-ph/9807395 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/9807395 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/48042 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | The low-energy constants of the pion-nucleon system | |
| dc.type | text |