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arXiv · 1911.12189

Quark condensate seesaw mechanism for neutrino mass

A. Babič·S. Kovalenko·M. I. Krivoruchenko·F. Šimkovic
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Abstract

We study a mechanism of generation of Majorana neutrino mass due to spontaneous breaking of chiral symmetry (SBCS) accompanied by the formation of a quark condensate. The effect of the condensate is transmitted to the neutrino sector via Lepton-Number Violating (LNV) lepton-quark dimension-$7$ operators known in the literature as an origin of the neutrino-mass-independent mechanism of neutrinoless double-beta ($0 \nu \beta \beta$) decay. The smallness of neutrino masses is due to a large ratio between the LNV scale and the scale of the SBCS. This is a new realization of the seesaw mechanism, which we dub the Quark Condensate SeeSaw (QCSS). We examine the predictions of the QCSS for $0 \nu \beta \beta$-decay and neutrino mass spectrum. We will show that our model predicts the normal neutrino mass ordering and narrow ranges of the neutrino masses.

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A. Babič, S. Kovalenko, M. I. Krivoruchenko, F. Šimkovic. 2019-11-27. Quark condensate seesaw mechanism for neutrino mass. https://doi.org/10.1103/physrevd.103.015007

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