Anatomy of the 0{nu}{beta}{beta} nuclear matrix elements

Journal Article · Tue Apr 15 04:00:00 EDT 2008 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.77.045503· OSTI ID:21189939

Simkovic, Fedor; Faessler, Amand; Rodin, Vadim ^[1]; Vogel, Petr ^[2]; Engel, Jonathan ^[3]

---

1. Institute fuer Theoretische Physik der Universitaet Tuebingen, D-72076 Tuebingen (Germany)
2. Kellogg Radiation Laboratory and Physics Department, Caltech, Pasadena, California 91125 (United States)
3. Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27599-3255 (United States)

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.

• OSTI ID: 21189939
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 4 Vol. 77; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
COMPETITION
CORRELATIONS
DOUBLE BETA DECAY
MATRIX ELEMENTS
NEUTRONS
NUCLEAR MATRIX
NUCLEON-NUCLEON INTERACTIONS
PROTONS
RANDOM PHASE APPROXIMATION