Medium Effects of Low Energy Pions
| dc.creator | Friedman, E. | |
| dc.date | 2003-10-01 | |
| dc.date.accessioned | 2026-07-07T05:39:56Z | |
| dc.date.available | 2026-07-07T05:39:56Z | |
| dc.description | Fits of pion-nucleus potentials to large sets of pionic atom data reveal departures of parameter values from the corresponding free $πN$ parameters. These medium effects can be quantitatively reproduced by a chiral-motivated model where the pion decay constant is modified in the medium or by including the empirical on-shell energy dependence of the amplitudes. No consistency is obtained between pionic atoms and the free $πN$ interaction when an extreme off-shell chiral model is used. The role of the size of data sets is briefly discussed. | |
| dc.description | 12 pages, 3 figures, 1 table. To appear in Acta Physica Polonica B, proceedings of XXVIII Mazurian Lakes Conference on Physics | |
| dc.identifier | https://arxiv.org/abs/nucl-th/0310002 | |
| dc.identifier | http://arxiv.org/abs/nucl-th/0310002 | |
| dc.identifier | Acta Phys.Polon. B35 (2004) 979-990 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/82104 | |
| dc.subject | Nuclear Theory | |
| dc.title | Medium Effects of Low Energy Pions | |
| dc.type | text |