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Littlest mu-tau seesaw

Littlest mu-tau seesaw
Littlest mu-tau seesaw

We propose a μ − τ reflection symmetric Littlest Seesaw (μτ -LSS) model. In this model the two mass parameters of the LSS model are fixed to be in a special ratio by symmetry, so that the resulting neutrino mass matrix in the flavour basis (after the seesaw mechanism has been applied) satisfies μ − τ reflection symmetry and has only one free adjustable parameter, namely an overall free mass scale. However the physical low energy predictions of the neutrino masses and lepton mixing angles and CP phases are subject to renormalisation group (RG) corrections, which introduces further parameters. Although the high energy model is rather complicated, involving (S4 × U(1))2 and supersymmetry, with many flavons and driving fields, the low energy neutrino mass matrix has ultimate simplicity.

Discrete Symmetries, Neutrino Physics, Renormalization Group, Solar and Atmospheric Neutrinos
1126-6708
King, Stephen F.
f8c616b7-0336-4046-a943-700af83a1538
Zhou, Ye Ling
ee7044b2-b38d-4a2d-ae3d-f1b14cf86b1b
King, Stephen F.
f8c616b7-0336-4046-a943-700af83a1538
Zhou, Ye Ling
ee7044b2-b38d-4a2d-ae3d-f1b14cf86b1b

King, Stephen F. and Zhou, Ye Ling (2019) Littlest mu-tau seesaw. Journal of High Energy Physics, 2019 (5), [217]. (doi:10.1007/JHEP05(2019)217).

Record type: Article

Abstract

We propose a μ − τ reflection symmetric Littlest Seesaw (μτ -LSS) model. In this model the two mass parameters of the LSS model are fixed to be in a special ratio by symmetry, so that the resulting neutrino mass matrix in the flavour basis (after the seesaw mechanism has been applied) satisfies μ − τ reflection symmetry and has only one free adjustable parameter, namely an overall free mass scale. However the physical low energy predictions of the neutrino masses and lepton mixing angles and CP phases are subject to renormalisation group (RG) corrections, which introduces further parameters. Although the high energy model is rather complicated, involving (S4 × U(1))2 and supersymmetry, with many flavons and driving fields, the low energy neutrino mass matrix has ultimate simplicity.

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More information

Accepted/In Press date: 21 May 2019
e-pub ahead of print date: 31 May 2019
Keywords: Discrete Symmetries, Neutrino Physics, Renormalization Group, Solar and Atmospheric Neutrinos

Identifiers

Local EPrints ID: 432073
URI: http://eprints.soton.ac.uk/id/eprint/432073
ISSN: 1126-6708
PURE UUID: 7e74331f-3757-44a8-827e-9706adb777da

Catalogue record

Date deposited: 01 Jul 2019 16:30
Last modified: 07 Oct 2020 00:31

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