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# Golden Littlest Seesaw

Ding, Gui-Jun, King, Stephen F. and Li, Cai-Chang (2017) Golden Littlest Seesaw. Nuclear Physics B, 925, 470-499.

Record type: Article

## Abstract

We propose and analyse a new class of Littlest Seesaw models, with two right-handed neutrinos in their diagonal mass basis, based on preserving the first column of the Golden Ratio mixing matrix. We perform an exhaustive analysis of all possible remnant symmetries of the group $A_5$ which can be used to enforce various vacuum alignments for the flavon controlling solar mixing, for two simple cases of the atmospheric flavon vacuum alignment. The solar and atmospheric flavon vacuum alignments are enforced by {\em different} remnant symmetries. We examine the phenomenological viability of each of the possible Littlest Seesaw alignments in $A_5$, which preserve the first column of the Golden ratio mixing matrix, using figures and extensive tables of benchmark points and comparing our predictions to a recent global analysis of neutrino data. We also repeat the analysis for an alternative form of Golden Ratio mixing matrix.

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Accepted/In Press date: 25 October 2017
e-pub ahead of print date: 31 October 2017
Published date: December 2017
Keywords: hep-ph

## Identifiers

Local EPrints ID: 416411
URI: http://eprints.soton.ac.uk/id/eprint/416411
ISSN: 0550-3213
PURE UUID: af502ca7-3270-4164-aecc-991e3016187b

## Catalogue record

Date deposited: 15 Dec 2017 17:30

## Contributors

Author: Gui-Jun Ding
Author: Stephen F. King
Author: Cai-Chang Li