A flavour GUT model with $theta_13^PMNS simeq theta

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A flavour GUT model with $theta_13^PMNS simeq theta_C/sqrt2

JournalArticle (Originalarbeit in einer wissenschaftlichen Zeitschrift)

ID	2316358
Author(s)	Sluka, Constantin
Author(s) at UniBasel	Antusch, Stefan
Year	2013
Title	A flavour GUT model with $theta_13^PMNS simeq theta_C/sqrt2
Journal	Nuclear physics. B, Particle physics
Volume	877
Number	3
Pages / Article-Number	772-791
Abstract	We propose a supersymmetric SU(5) GUT model with an A(4) family symmetry - including a full flavon and messenger sector - which realises the relation H theta(PMNS)(13) similar or equal to theta(C)/ root 2. The neutrino sector features tribimaximal mixing, and theta(PMNS)(13) similar or equal to theta(C)/ root 2 emerges from the charged lepton contribution to the PMNS matrix, which in turn is linked to quark mixing via specific GUT relations. These GUT relations arise after GUT symmetry breaking from a novel combination of group theoretical Clebsch-Gordan factors, which in addition to large theta(PMNS)(13) lead to promising quark-lepton mass ratios for all generations of quarks and leptons and to m(s)/m(d) = 18.95(-0.24)(+0.33), in excellent agreement with experimental results. The model also features spontaneous CP violation, with all quark and lepton CP phases determined from family symmetry breaking. We perform a full Markov Chain Monte Carlo fit to the available quark and lepton data, and discuss how the model can be tested by present and future experiments. (C) 2013 Elsevier B.V. All rights reserved.
Publisher	Elsevier Science
ISSN/ISBN	0550-3213
edoc-URL	http://edoc.unibas.ch/dok/A6212210
Full Text on edoc	No
Digital Object Identifier DOI	10.1016/j.nuclphysb.2013.11.003
ISI-Number	WOS:000328796400006
Document type (ISI)	article

14/05/2024

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