On the uncertainty in the 0νββ decay nuclear matrix elements

2003/05/02 by V. A. Rodin, Amand Faessler, F. Šimkovic +1 · 1 citation
Physics and Astronomy · #nucl-th

paper · pdf · doi:10.1103/physrevc.68.044302

published as Phys.Rev.C68:044302,2003 · 5 pages, 2 figures

arxiv created 2003/05/02 · arxiv updated 2011/05/05

Abstract

The nuclear matrix elements M^0ν of the neutrinoless double beta decay (0νββ) are evaluated for ⁷⁶Ge,¹⁰⁰Mo, ¹³⁰Te, and ¹³⁶Xe within the Renormalized Quasiparticle Random Phase Approximation (RQRPA) and the simple QRPA. Three sets of single particle level schemes are used, ranging in size from 9 to 23 orbits. When the strength of the particle-particle interaction is adjusted so that the 2νββ decay rate is correctly reproduced, the resulting M^0ν values become essentially independent on the size of the basis, and on the form of different realistic nucleon-nucleon potentials. Thus, one of the main reasons for variability of the calculated M^0ν within these methods is eliminated.

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