Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2001-07-06
Phys.Rev. C64 (2001) 035501
Physics
Nuclear Physics
Nuclear Theory
31 pages, RevTex, 1 Postscript figures, to appear in Phys. Rev. C
Scientific paper
10.1103/PhysRevC.64.035501
The neutrinoless double beta decay transition to the first excited 0^+ collective final state is examined for A=76, 82, 100 and 136 nuclei by assuming light and heavy Majorana neutrino exchange mechanisms as well as the trilinear R-parity violating contributions. Realistic calculations of nuclear matrix elements have been performed within the renormalized quasiparticle random phase approximation. Transitions to the first excited two-quadrupole phonon 0^+ state are described within a boson expansion formalism and alternatively by using the operator recoupling method. We present the sensitivity parameters to different lepton number violating signals, which can be used in planning the neutrinoless double beta decay experiments. The half-life of neutrinoless double beta decay to the first excited state 0^+_1 is by a factor of 10 to 100 larger than that of the transition to the ground state.
Faessler Amand
Kaminski Wieslaw A.
Nowak Michael
Raduta A. A.
Simkovic Fedor
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