2,695 research outputs found
Three-body Thomas-Ehrman shifts of analog states of Ne and N
The lowest-lying states of the Borromean nucleus Ne (O+ +
) and its mirror nucleus N (N+ + ) are compared by using
the hyperspheric adiabatic expansion. Three-body resonances are computed by use
of the complex scaling method. The measured size of O and the low-lying
resonances of F (O+) are first used as constraints to
determine both central and spin-dependent two-body interactions. The
interaction obtained reproduces relatively accurately both experimental
three-body spectra. The Thomas-Ehrman shifts, involving excitation energy
differences, are computed and found to be less than 3% of the total Coulomb
energy shift for all states.Comment: 9 pages, 3 postscript figures, revtex style. To be published in Phys.
Rev.
- …