$ΛNN$ and $ΣNN$ systems at threshold
| dc.creator | Garcilazo, H. | |
| dc.creator | Fernandez-Carames, T. | |
| dc.creator | Valcarce, A. | |
| dc.date | 2007-01-31 | |
| dc.date | 2007-03-12 | |
| dc.date.accessioned | 2026-07-07T11:22:33Z | |
| dc.date.available | 2026-07-07T11:22:33Z | |
| dc.description | We calculate the hypertriton binding energy and the $Λd$ and $Σd$ scattering lengths using baryon-baryon interactions obtained from a chiral constituent quark model. We study consistently the $ΛNN$ and $ΣNN$ systems analyzing the effect of the $Σ\leftrightarrow Λ$ conversion. Our interactions correctly predict the hypertriton binding energy. The $(I,J)=(0,3/2)$ $ΛNN$ channel is also attractive and it might have a bound state. From the condition of nonexistence of a (0,3/2) $ΛNN$ bound state, an upper limit for the spin-triplet $ΛN$ scattering length is obtained. We also present results for the elastic and inelastic $ΣN$ and $ΛN$ cross sections. The consistent description of the $ΣN$ scattering cross sections imposes a lower limit for the corresponding spin-triplet scattering lengths. In the $ΣNN$ system the only attractive channels are $(I,J)=(1,1/2)$ and $(0,1/2)$, the $(1,1/2)$ state being the most attractive one. | |
| dc.description | 17 pages, 6 tables, 13 figures. Accepted for publication in Phys. Rev. C | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0701275 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0701275 | |
| dc.identifier | Phys.Rev.C75:034002,2007 | |
| dc.identifier | doi:10.1103/PhysRevC.75.034002 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/194609 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.subject | Nuclear Theory | |
| dc.title | $ΛNN$ and $ΣNN$ systems at threshold | |
| dc.type | text |