English

Simple A4 models for dark matter stability with texture zeros

High Energy Physics - Phenomenology 2019-04-01 v2

Abstract

In a simple framework which naturally incorporates dark matter stability and neutrino phenomenology, we compute all the possible texture zeros which arise when the non-abelian flavor symmetry A4 is spontaneously broken to Z2. As a result, we obtain four textures with two vanishing matrix elements. Two of such textures predict a zero contribution to the neutrinoless double beta decay effective mass parameter at tree level, and as a one loop bound we get mee<8×102m_{ee}<8\times 10^{-2} meV. These are compatible with the normal ordering for the neutrino masses and the allowed range for the lightest neutrino mass is between mνmin3m_{\nu_{min}}\sim3 meV and mνmax8m_{\nu_{max}}\sim8 meV. Additionally we obtain dark matter stability linked to the way the flavor symmetry is broken, leaving a residual Z2 symmetry

Keywords

Cite

@article{arxiv.1811.10619,
  title  = {Simple A4 models for dark matter stability with texture zeros},
  author = {Leon M. G. de la Vega and R. Ferro-Hernandez and E. Peinado},
  journal= {arXiv preprint arXiv:1811.10619},
  year   = {2019}
}

Comments

5 pages, 1 figure. Minor corrections, some references added, version to match the journal version

R2 v1 2026-06-23T06:20:57.551Z