3rd ComHEP: Colombian Meeting on High Energy Physics (Cali, Colombia)

Deviations to Tri-Bi-Maximal mixing in the limit of μ−τ symmetry

4 Dec 2018, 15:40

20m

Auditorio Auxiliar del Aula Máxima (Bloque 3, Piso 4)) (Santiago de Cali, Colombia)

Parallel talk

Speaker

Mrs Diana Rivera (USC)

Description

In the limit of an approximate $\mu -\tau$ symmetry in the neutrino mass matrix, we explore deviations to the Tri-Bi-Maximal mixing pattern in the neutrino sector. The correction matrix is parametrized as $U_{ij}(\varphi ,\sigma )U({\alpha }_1,{\alpha }_2)$, where $\varphi$ is the rotation angle in the $ij$ flavors, and $\sigma$, ${\alpha }_1$ and ${\alpha }_2$ are complex phases. We show that the $ij=13$ and $23$ scenarios are able to predict the current values of neutrino mixings and that it is possible to constrain the Majorana $CP$ phases by studying their correlation with the mixing angles. We study the impact of such predictions in the neutrinoless double beta decay. The predicted regions are sharp for the quasi-degenerate ordering and can be tested in forthcoming experiments.

Presentation materials

3COMHEPDianaRivera.pdf