Anatomy of nuclear matrix elements for neutrinoless double-beta decay
read the original abstract
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.
This paper has not been read by Pith yet.
Forward citations
Cited by 1 Pith paper
-
Ab initio correlations between neutrinoless and two-neutrino double-beta decays in $^{48}$Ca
Ab initio IM-NCCI calculations on 48Ca establish strong linear correlations between 0νββ and 2νββ NMEs across 34 chiral Hamiltonians, yielding a constrained M^{0ν} prediction of 1.30-1.65 after incorporating experimen...
discussion (0)
Sign in with ORCID, Apple, or X to comment. Anyone can read and Pith papers without signing in.