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Title: On the neutrinoless double β{sup +}/EC decays

The neutrinoless double positron-emission/electron-capture (0νβ{sup +}/EC) decays are studied for the magnitudes of the involved nuclear matrix elements (NMEs). Decays to the ground state, 0{sub gs}{sup +}, and excited 0{sup +} states are discussed. The participant many-body wave functions are evaluated in the framework of the quasiparticle random-phase approximation (QRPA). Effective, G-matrix-derived nuclear forces are used in realistic single-particle model spaces. The channels β{sup +}β{sup +}, β{sup +}EC, and the resonant neutrinoless double electron capture (R0νECEC) are discussed.
Authors:
 [1]
  1. Department of Physics, P.O. Box 35 (YFL), FI-40014 University of Jyväskylä (Finland)
Publication Date:
OSTI Identifier:
22262662
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1572; Journal Issue: 1; Conference: MEDEX '13: Workshop on calculation of double-beta-decay materx elements, Prague (Czech Republic), 11-14 Jun 2013; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; DECAY; ELECTRON CAPTURE; ELECTRON EMISSION; G MATRIX; GROUND STATES; NUCLEAR FORCES; NUCLEAR MATRIX; POSITRONS; RANDOM PHASE APPROXIMATION; SINGLE-PARTICLE MODEL; WAVE FUNCTIONS