Phase space factors and half-life predictions for Majoron emitting $\beta^-\beta^-$ decay
Nuclear Theory
2015-09-18 v1
Abstract
A complete calculation of phase space factors (PSF) for Majoron emitting decay modes is presented. The calculation makes use of exact Dirac wave functions with finite nuclear size and electron screening and includes life-times, single electron spectra, summed electron spectra, and angular electron correlations. Combining these results with recent interacting boson nuclear matrix elements (NME) we make half-life predictions for the the ordinary Majoron decay (spectral index =1). Furthermore, comparing theoretical predictions with the obtained experimental lower bounds for this decay mode we are able to set limits on the effective Majoron-neutrino coupling constant .
Keywords
Cite
@article{arxiv.1509.05154,
title = {Phase space factors and half-life predictions for Majoron emitting $\beta^-\beta^-$ decay},
author = {J. Kotila and J. Barea and F. Iachello},
journal= {arXiv preprint arXiv:1509.05154},
year = {2015}
}