Contributed report: Flavor anarchy for Majorana neutrinos

Pramana

Yael Shadmi²  Yosef Nir1¹ 

[1] Department of Particle Physics, Weizmann Institute of Science, Rehovot 76100, Israel$$;Physics Department, Technion{Israel Institute of Technology, Haifa 32000, Israel$$

关键词: Neutrino masses;    flavor symmetries;    Majorana.;   

DOI  :  

学科分类：物理（综合）

来源: Indian Academy of Sciences

【 摘 要 】

We argue that neutrino flavor parameters may exhibit features that are very different from those of quarks and charged leptons. Specifically, within the Froggatt–Nielsen (FN) framework, charged fermion parameters depend on the ratio between two scales, while for neutrinos a third scale – that of lepton number breaking – is involved. Consequently, the selection rules for neutrinos may be different. In particular, if the scale of lepton number breaking is similar to the scale of horizontal symmetry breaking, neutrinos may become flavor-blind even if they carry different horizontal charges. This provides an attractive mechanism for neutrino flavor anarchy.

【 授权许可】

Unknown