$Λ-π$ phase shift in Chiral Perturbation Theory
| dc.creator | Datta, Alakabha | |
| dc.creator | O'Donnell, Patrick | |
| dc.creator | Pakvasa, Sandip | |
| dc.date | 1998-06-15 | |
| dc.date | 1998-06-22 | |
| dc.date.accessioned | 2026-07-07T11:47:51Z | |
| dc.date.available | 2026-07-07T11:47:51Z | |
| dc.description | We calculate the S and P wave phase shifts in $Λ- π$ scattering at the $Ξ$ mass using the full relativistic $SU(3)_L \times SU(3)_R$ chiral perturbation theory. We get small phase shifts similar to previous calculations using $ SU(2)_L \times SU(2)_R$ chiral perturbation theory in the heavy baryon limit. We also consider possible off--shell effects in the coupling of the Rarita-Schwinger particle $Σ^*(1385)$. Using SU(3) we estimate the off--shell coupling of the $Σ^*$ to $Λπ$ from the off--shell coupling of the $Δ$ to $N π$ which is obtained from a fit to the pion--nucleon data. We find that the contributions from the off--shell coupling can be of the same size as the other terms in the $Λπ$ scattering amplitude. | |
| dc.description | 12 pages, latex, 1 figure, reference added, slight change in text | |
| dc.identifier | https://arxiv.org/abs/hep-ph/9806374 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/9806374 | |
| dc.identifier | Phys.Lett.B344:430-432,1995 | |
| dc.identifier | doi:10.1016/0370-2693(94)01577-Y | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/202716 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | $Λ-π$ phase shift in Chiral Perturbation Theory | |
| dc.type | text |