Alpha-Alpha scattering, chiral symmetry and 8Be lifetime
| dc.creator | Arriola, E. Ruiz | |
| dc.date | 2008-04-14 | |
| dc.date.accessioned | 2026-07-07T11:49:50Z | |
| dc.date.available | 2026-07-07T11:49:50Z | |
| dc.description | Alpha-alpha scattering is discussed in terms of a chiral two pion exchange potential which turns out to be attractive and singular at the origin, hence demanding renormalization. When 8Be is treated as a resonance state a model independent correlation between the Q-factor and lifetime 1/Gamma for the decay into two alpha particles arises. For a wide range of parameters compatible with potential model analyses of low energy pi-alpha scattering it is found Gamma = 4.4(4)eV} in fairly good agreement with the experimental value Gamma = 5.57 (25) eV. The remaining discrepancy as well as the phase shift up to ELAB=15MeV could be accommodated by the leading nuclear peripheral contributions due to the 3H+p and 3He+n continuum. | |
| dc.description | presented by at SCADRON 70 ``Scalar Mesons and Related Topics, Lisbon, 11-16 February 2008, 6 pages | |
| dc.identifier | https://arxiv.org/abs/0804.2199 | |
| dc.identifier | http://arxiv.org/abs/0804.2199 | |
| dc.identifier | AIPConf.Proc.1030:135-140,2008 | |
| dc.identifier | doi:10.1063/1.2973487 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/203375 | |
| dc.subject | Nuclear Theory | |
| dc.title | Alpha-Alpha scattering, chiral symmetry and 8Be lifetime | |
| dc.type | text |