The Importance of Being Majorana: Neutrinos versus Charged Fermions in Flavor Models | Zendy

Yosef Nir | Zendy; Yael Shadmi | Zendy

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The Importance of Being Majorana: Neutrinos versus Charged Fermions in Flavor Models

Author(s) -

Yosef Nir,

Yael Shadmi

Publication year - 2004

Publication title -

journal of high energy physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.998

H-Index - 261

eISSN - 1126-6708

pISSN - 1029-8479

DOI - 10.1088/1126-6708/2004/11/055

Subject(s) - majorana , fermion , neutrino , particle physics , physics , flavor , biology , biochemistry

We argue that neutrino flavor parameters may exhibit features that are verydifferent from those of quarks and charged leptons. Specifically, within theFroggatt-Nielsen (FN) framework, charged fermion parameters depend on the ratiobetween two scales, while for neutrinos a third scale--that of lepton numberbreaking--is involved. Consequently, the selection rules for neutrinos may bedifferent. In particular, if the scale of lepton number breaking is similar tothe scale of horizontal symmetry breaking, neutrinos may become flavor-blindeven if they carry different horizontal charges. This provides an attractivemechanism for neutrino flavor anarchy.Comment: 4 pages, revtex

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