Nuclear Matrix Elements of Double Beta Decay in Deformed Nuclei

Authors: C. SELAM, ATALAY KÜÇÜKBURSA, H. BİRCAN, H. A. AYGÖR, T. BABACAN, İ. MARAŞ, A. KÖKÇE

Abstract: Nuclear matrix elements (M_{GT}) for two-neutrino double beta transitions of selected nuclei were calculated via a QRPA approach by considering the charge-exchange spin-spin interactions in the particle-hole channel among nucleons. Calculations were performed for both spherical and deformed cases of nuclei. As a result of these calculations, it has been seen that, although the value of the nuclear matrix elements in deformation case are 2-4 times smaller when compared with that of the spherical case, it is still 2-8 times greater than the experimental values.

Keywords: Double beta decay

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