English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Minimal SO(10) grand unified models provide phenomenological predictions forneutrino mass patterns and mixing. These are the outcome of the interplay ofseveral features, namely: i) the seesaw mechanism; ii) the presence of anintermediate scale where B-L gauge symmetry is broken and the right-handedneutrinos acquire a Majorana mass; iii) a symmetric Dirac neutrino mass matrixwhose pattern is close to the up-type quark one. In this framework two naturalcharacteristics emerge. Normal neutrino mass hierarchy is the only allowed, andthere is an approximate relation involving both light-neutrino masses andmixing parameters. This differs from what occurring when horizontal flavoursymmetries are invoked. In this case, in fact, neutrino mixing or massrelations have been separately obtained in literature. In this paper we discussan example of such comprehensive mixing-mass relation in a specific realizationof SO(10) and, in particular, analyse its impact on the expected neutrinolessdouble beta decay effective mass parameter $\langle m_{ee} \rangle$, and on theneutrino mass scale. Remarkably a lower limit for the lightest neutrino mass isobtained ($m_{\rm lightest} \gtrsim 7.5 \times 10^{-4}$ eV, at 3 $\sigma$level).

A neutrino mass-mixing sum rule from SO(10) and neutrinoless double beta decay