Phys. Rev. Lett. 69, 3709–3712 (1992)The shape eigenstate: A new kind of resonanceReceived 9 November 1992; published in the issue dated 28 December 1992 A new type of resonance appears to have been discovered in the 12C(12C,12C(02+))12C(02+) reaction at Ec.m.=33 MeV. We suggest that it is formed coherently from nearly degenerate resonances with different l values. Taking the individual resonances to be members of a cluster rotational band with 2n+l=const, the coherence can be shown to follow from Levinson’s theorem. The new kind of resonance does not have a definite angular momentum but corresponds to an approximate shape eigenstate. © 1992 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.69.3709
DOI:
10.1103/PhysRevLett.69.3709
PACS:
25.70.Ef, 21.60.Gx, 24.30.Gd, 27.30.+t
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