Anatomy of the 0νββ nuclear matrix elements
By Fedor Simkovic, A. Faessler, V. Rodin, P. Vogel, Jonathan Engel. 2007
148 citations recorded by the source corpus.
We show that, within the quasiparticle random phase approximation (QRPA) and the renormalized QRPA (RQRPA) based on the Bonn-CD nucleon-nucleon interaction, the competition between the pairing and the neutron-proton particle-particle and particle-hole interactions causes contributions to the neutrinoless double-beta decay matrix element to nearly vanish at internucleon distances of more than 2 or 3 fermis. As a result, the matrix element is more sensitive to short-range/high-momentum physics than one naively expects. We analyze various ways of treating that physics and quantify the uncertainty it produces in the matrix elements, with three different treatments of short-range correlations.
Subfields: Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/12d67eeb3a866941d9cbd0a5a444389cc8c33e85
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In Nuclear and High Energy Physics
Citations in the corpus
- Precise Half-Life Values for Two-Neutrino Double-β Decay: 2020 Review (2020, methodology): “For example, the accurate half-life values for 2νββ decay are used to determine the most important parameter of the quasiparticle random-phase approximation model (QRPA), the strength of the particle–particle interaction gpp [17–20].”
- Neutrinoless double beta decay in seesaw models (2010, methodology): “This result has been confirmed by explicit calculation [ 53 , 54].”