The neutrino mass matrix and (selected) variants of A4

Pramana

Martin Hirsch1¹ 

[1] HEP Group, Instituto de Física Corpuscular – C.S.I.C./Universitat de València, Edificio de Institutos de Paterna, Apartado 22085, E-46071 València, Spain$$

关键词: Neutrinos;    flavour symmetries.;   

DOI  :  

学科分类：物理（综合）

来源: Indian Academy of Sciences

【 摘 要 】

Recent neutrino oscillation experiments have measured leptonic mixing angles with considerable precision. Many theoretical attempts to understand the peculiar mixing structure, observed in these measurements, are based on non-Abelian flavour symmetries. This talk concentrates exclusively on models based on the non-Abelian symmetry 𝐴4 . 𝐴4 is particularly well suited to describe three family mixing, and allows to explain the near tri-bimaximal mixing observed. Special emphasis is put here on the discussion of the neutrinoless double beta decay observable $langle m_{𝜈} angle$ . Different models based on 𝐴4 with very similar predictions for neutrino angles can yield vastly different expectations for $langle m_{𝜈} angle$ . Neutrinoless double beta decay can thus serve, in principle, as a discriminator between different neutrino mass models.

【 授权许可】

Unknown