Abstract
In this paper, we present the first beyond closure calculation for the neutrinoless double- decay of to the first states of within the two nucleon mechanism. The isospin symmetry restored quasiparticle random-phase approximation method with the charge-dependent-Bonn realistic force is adopted for the nuclear structure calculations. We analyze the structure of the nuclear matrix elements and estimate the uncertainties from our nuclear many-body calculations. We find plays an important role for the calculations, and if quenching is included, suppression for the transition matrix element is found. Our results for the transition matrix elements are about one order of magnitude larger than previous projected Hartree-Fock-Bogolyubov results with the closure approximation.
- Received 1 February 2021
- Accepted 22 March 2021
DOI:https://doi.org/10.1103/PhysRevC.103.045501
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