T=0 pairing correlations and band crossing phenomena in N=Z nuclei

The structure of the N=Z nuclei 60Zn, 62Ga, 64Ge and 72Kr has been investigated at GASP spectrometer through the View the MathML source and View the MathML source reactions at 140 and 160 MeV, respectively, using reaction channel selection with the ISIS Si-ball. The high spin states of such nuclei have been investigated searching for the four quasi-particle View the MathML source alignment. TRS calculations have been performed for the N=36, 38 and 40 Kr isotopes. In the case of 72Kr the four quasi-particle View the MathML source alignment is observed to be significantly delayed in rotational frequency with respect to the heavier Kr isotopes. Such a delay contradicts the predictions of mean field calculations and may be interpreted as the first sign of additional correlations in the T=0 pairing channel.