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

In the framework of canonical seesaw model, we present a simple but viablescenario to explicitly break an $S^{}_{3{\rm L}} \times S^{}_{3{\rm R}}$ flavorsymmetry in the leptonic sector. It turns out that the leptonic flavor mixingmatrix is completely determined by the mass ratios of charged leptons (i.e.,$m^{}_e/m^{}_\mu$ and $m^{}_\mu/m^{}_\tau$) and those of light neutrinos (i.e.,$m^{}_1/m^{}_2$ and $m^{}_2/m^{}_3$). The latest global-fit results of threeneutrino mixing angles $\{\theta^{}_{12}, \theta^{}_{13}, \theta^{}_{23}\}$ andtwo neutrino mass-squared differences $\{\Delta m^2_{21}, \Delta m^2_{31}\}$ atthe $3\sigma$ level are used to constrain the parameter space of$\{m^{}_1/m^{}_2, m^{}_2/m^{}_3\}$. The predictions for the mass spectrum andflavor mixing are highlighted: (1) The neutrino mass spectrum shows ahierarchical pattern and a normal ordering, e.g., $m^{}_1 \approx 2.2~{\rmmeV}$, $m^{}_2 \approx 8.8~{\rm meV}$ and $m^{}_3 \approx 52.7~{\rm meV}$; (2)Only the first octant of $\theta^{}_{23}$ is allowed, namely, $41.8^\circ\lesssim \theta^{}_{23} \lesssim 43.3^\circ$; (3) The Dirac CP-violating phase$\delta \approx -22^\circ$ deviates significantly from the maximal value$-90^\circ$. All these predictions are ready to be tested in the ongoing andforthcoming neutrino oscillation experiments. Moreover, we demonstrate that thecosmological matter-antimatter asymmetry can be explained via resonantleptogenesis, including the individual lepton-flavor effects. In our scenario,the leptonic CP violation at low- and high-energy scales are closely connected.

Broken $S^{}_{3{\rm L}} \times S^{}_{3{\rm R}}$ Flavor Symmetry and Leptonic CP Violation