Speaker
Prof.
HIROYUKI SAGAWA
(RIKEN/UNIVERSITY OF AIZU)
Description
The spin magnetic dipole transitions and the neutron-proton spin-spin correlations in $sd-$shell even-even nuclei with $N=Z$ are investigated using shell model wave functions. The isoscalar (IS) spin-triplet pairing correlation provides a substantial quenching effect on the spin magnetic dipole transitions, especially on the isovector (IV) ones. Consequently, an enhanced isoscalar spin-triplet pairing interaction influences the proton-neutron spin-spin correlation deduced from the difference between the IS and the IV sum rule strengths. The effects of the higher configuration mixings, exchange currents and Δ(Δ(33) resonance)-hole coupling are also examined in the spin transitions and the spin-spin correlations of the ground states.
Primary author
Prof.
HIROYUKI SAGAWA
(RIKEN/UNIVERSITY OF AIZU)
