Abstract
The continuum of the nucleus is studied theoretically in a three-body model based on recent information concerning the spectrum [M. S. Golovkov et al., Phys. Rev. C 76, 021605(R) (2007)]. The ground state (g.s.) candidate with structure for new g.s. energy of is predicted to be at about 2.0–2.3 MeV. The peak in the cross section associated with this state may be shifted to a lower energy (e.g., MeV) when is populated in reactions with due to a peculiar reaction mechanism. Formation of the low-energy ( keV) “alternative” ground state with structure is highly probable in when there is considerable attraction (e.g., fm) in the -wave channel, whose properties are still quite uncertain. This result either questions the existing experimental low-energy spectrum of or places a limit on the scattering length in the channel, which contradicts existing data.
6 More- Received 28 September 2007
DOI:https://doi.org/10.1103/PhysRevC.77.034611
©2008 American Physical Society