Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2000-12-04
Phys.Rev.C63:051301,2001
Physics
Nuclear Physics
Nuclear Theory
13 pages, 3 figures, 1 table
Scientific paper
10.1103/PhysRevC.63.051301
The first, to our knowledge, calculation of neutrinoless double beta decay ($0\nu\beta\beta$-decay) matrix elements within the self-consistent renormalised Quasiparticle Random Phase Approximation (SRQRPA) is presented. The contribution from the momentum-dependent induced nucleon currents to $0\nu\beta\beta$-decay amplitude is taken into account. A detailed nuclear structure study includes the discussion of the sensitivity of the obtained SRQRPA results for $0\nu\beta\beta$-decay of $^{76}$Ge to the parameters of nuclear Hamiltonian, two-nucleon short-range correlations and the truncation of the model space. A comparision with the standard and renormalized QRPA is presented. We have found a considerable reduction of the SRQRPA nuclear matrix elements, resulting in less stringent limits for the effective neutrino mass.
Bobyk A.
Kaminski Wieslaw A.
Simkovic Fedor
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