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Theory of neutrino masses and mixing

Smirnov, A. Y. (in preparation). Theory of neutrino masses and mixing.

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1402.6580.pdf (Preprint), 128KB
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Creators:
Smirnov, Alexei Yu.1, Author
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1Max-Planck-Institut fuer Kernphysik & ICTP, Trieste, Saupfercheckweg 1, 69117 Heidelberg, ou_persistent22

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Free keywords: High Energy Physics - Phenomenology, hep-ph
Abstract: In spite of enormous experimental progress in determination of the neutrino parameters, theory of neutrino mass and mixing is still on the cross-roads. Guidelines could be (i) the connection between zero neutrino charges (and therefore a possibility to be Majorana particle), smallness of the neutrino mass and large lepton mixing, (ii) joint description of leptons and quarks, (iii) existence of the right handed (RH) neutrinos without special quantum numbers. Properties of the RH neutrinos and the UV completion of the seesaw may turn out to be the key to understand the neutrino mass and mixing. In view of the LHC results minimalistic scenarios like $\nu$MSM look rather plausible. Still the GUT's with additional hidden sector, QLC, high scale flavor symmetries are appealing. Concerning mixing, the main issue is "symmetry or no symmetry" behind the observed pattern. The symmetry group condition is useful tool to study consequences of symmetries and to perform "symmetry building". Sterile neutrinos are challenge but also opportunity for the present theoretical constructions.

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Dates: 2014-02-26
Publication Status: Not specified
Pages: 13 pages, Talk given at the "Pontecorvo 100" Symposium, Pisa, Italy, September 18 - 20, 2013
Publishing info: -
Rev. Type: -
Identifiers: arXiv: 1402.6580
URI: http://arxiv.org/abs/1402.6580
Degree: -

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