Short-range correlations and neutrinoless double beta decay

Abstract

In this work we report on the effects of short-range correlations upon the matrix elements of neutrinoless double beta decay. We focus on the calculation of the matrix elements of the neutrino-mass mode of neutrinoless double beta decays of 48Ca and 76Ge. The nuclear-structure components of the calculation, that is the participant nuclear wave functions, have been calculated in the shell-model scheme for 48Ca and in the proton-neutron quasiparticle random-phase approximation (pnQRPA) scheme for 76Ge. We compare the traditional approach of using the Jastrow correlation function with the more complete scheme of the unitary correlation operator method (UCOM). Our results indicate that the Jastrow method vastly exaggerates the effects of short-range correlations on the neutrinoless double beta decay nuclear matrix elements.

12 pages, 3 figures, to appear in Physics Letters B (2007)

References in corpus (2)

• Erratum: Assessment of uncertainties in QRPA $0\nu \beta \beta$-decay nuclear matrix elements [Nucl. Phys. A 766, 107 (2006)]
• Matrix Elements and Few-Body Calculations within the Unitary Correlation Operator Method

Cited by in corpus (7)

• Anatomy of nuclear matrix elements for neutrinoless double-beta decay
• Results from a search for the $0\nu \beta \beta$-decay of ${}^{130}Te$
• Improved short-range correlations and 0nbb nuclear matrix elements of 76Ge and 82Se
• Nuclear matrix elements of neutrinoless double beta decay with improved short-range correlations
• Overconstrained estimates of neutrinoless double beta decay within the QRPA
• Nuclear Structure Aspects of the Neutrinoless Double Beta Decay
• Description of double beta decay within continuum-QRPA