Shape and Pairing Fluctuation Effects on Neutrinoless Double Beta Decay Nuclear Matrix Elements
Abstract
Nuclear matrix elements (NME) for the most promising candidates to detect neutrinoless double beta decay have been computed with energy density functional methods including deformation and pairing fluctuations explicitly on the same footing. The method preserves particle number and angular momentum symmetries and can be applied to any decay without additional fine tunings. The finite range density dependent Gogny force is used in the calculations. An increase of 10%40% in the NME with respect to the ones found without the inclusion of pairing fluctuations is obtained, reducing the predicted halflives of these isotopes.
 Publication:

Physical Review Letters
 Pub Date:
 October 2013
 DOI:
 10.1103/PhysRevLett.111.142501
 arXiv:
 arXiv:1401.0650
 Bibcode:
 2013PhRvL.111n2501V
 Keywords:

 21.60.Jz;
 23.40.Hc;
 HartreeFock and randomphase approximations;
 Relation with nuclear matrix elements and nuclear structure;
 Nuclear Theory;
 High Energy Physics  Phenomenology;
 Nuclear Experiment
 EPrint:
 5 pages, 3 Figures