Inversion doublets of 3N+N cluster structure in excited states of $^4$He
| dc.creator | Horiuchi, W. | |
| dc.creator | Suzuki, Y. | |
| dc.date | 2008-04-07 | |
| dc.date | 2008-07-09 | |
| dc.date.accessioned | 2026-07-07T11:49:38Z | |
| dc.date.available | 2026-07-07T11:49:38Z | |
| dc.description | Excited states of $^4$He are studied in four-body calculations with explicitly correlated Gaussian bases. All the levels below $E_{\rm x}$=26 MeV are reproduced reasonably well using realistic potentials. An analysis is made to show how the $0^+_2$ state becomes a resonance but those having almost the same structure as this state in different spin-isospin channels are not observed as resonances. The role of tensor force is stressed with a particular attention to the level spacing between the two $0^-$ states. The calculation of spectroscopic amplitudes, nucleon decay widths, and spin-dipole transition strengths demonstrates that the $0^+_2$ state and the three lowest-lying negative-parity states with $0^-$ and $2^-$ have $^3$H+$p$ and $^3$He+$n$ cluster configurations, leading to the interpretation that these negative-parity states are the inversion doublet partners of the $0^+_2$ state. | |
| dc.description | 7 pages, 4 figures | |
| dc.identifier | https://arxiv.org/abs/0804.0968 | |
| dc.identifier | http://arxiv.org/abs/0804.0968 | |
| dc.identifier | Phys.Rev.C78:034305,2008 | |
| dc.identifier | doi:10.1103/PhysRevC.78.034305 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/203305 | |
| dc.subject | Nuclear Theory | |
| dc.title | Inversion doublets of 3N+N cluster structure in excited states of $^4$He | |
| dc.type | text |