Our previous work indicates that, under the rules of this framework of physics, the neutrino and antineutrino (neutrino-species) interact differently with matter. Specifically that (a) they interact differently with the proton compared to the neutron, and (b) they are not only by-products of the decay of those nucleons as in the conventional understanding, but also can be inputs that initiate decay. (See previous posts).
Extending that work to the nuclides more generally, we are now able to show how it might be that decay rates could be somewhat erratic for β+, β-, and EC. It is predicted on theoretical grounds that the β-, β+ and electron capture processes may be induced by pre-supply of neutrino-species, and that the effects are asymmetrical for those species. Also predicted is that different input energies are required, i.e. that a threshold effect exists. Four simple lemmas are proposed with which it is straightforward to explain why β- and EC decays would be enhanced and correlate to solar neutrino flux (proximity & activity), and alpha (α) emission unaffected.
Basically the observed variability is proposed to be caused by the way neutrinos and antineutrinos induce decay differently. This is an interesting and potentially important finding because there are otherwise no physical explanations for how variable decay rates might arise. So the contribution here is providing a candidate theory.
We have put the paper out to peer-review, so it is currently under submission. If you are interested in preliminary information, the pre-print may be found at the physics archive:
This work makes the novel contribution of proposing a detailed mechanism for neutrino-species induced decay, broadly consistent with the empirical evidence.
New Zealand, 14 Feb 2015
You may also be interested in related sites talking about variable decay rates:
See also the references in our paper for a summary of the journal literature.
UPDATE (20 April 2015): This paper has been published as DOI: 10.5539/apr.v7n3p18 and is available open access here http://www.ccsenet.org/journal/index.php/apr/article/view/46281/25558