Is there np pairing in odd-odd N=Z nuclei?

Details Is there np pairing in odd-odd N=Z nuclei? Is there np pairing in odd-odd N=Z nuclei?

1999-07-30

arxiv.org/abs/nucl-th/9907121v1

Phys.Rev. C61 (2000) 041303

Physics

Nuclear Physics

Nuclear Theory

RevTeX, twocolumns, 4 pages, 4 figures. Submitted to Phys. Rev. Lett

Scientific paper

10.1103/PhysRevC.61.041303

The binding energies of even-even and odd-odd N=Z nuclei are compared. After correcting for the symmetry energy we find that the lowest T=1 state in odd-odd N=Z nuclei is as bound as the ground state in the neighboring even-even nucleus, thus providing evidence for isovector np pairing. However, T=0 states in odd-odd N=Z nuclei are several MeV less bound than the even-even ground states. We associate this difference with a pair gap and conclude that there is no evidence for an isoscalar pairing condensate in N=Z nuclei.

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