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Study of theory and phenomenology of some classes of family symmetry and unification models

Study of theory and phenomenology of some classes of family symmetry and unification models
Study of theory and phenomenology of some classes of family symmetry and unification models
We review and compare theoretically and phenomenologically a number of possible family symmetries, which when combined with unification, could be important in explaining quark, lepton and neutrino masses and mixings, providing new results in several cases. Theoretical possibilities include abelian or non-abelian, symmetric or non symmetric Yukawa matrices, Grand Unification or not. Our main focus is on anomaly-free U(1) family symmetry combined with SU(5) unification, although we also discuss other possibilities. We provide a detailed phenomenological fit of the fermion masses and mixings for several examples, and discuss the supersymmetric flavour issues in such theories, including a detailed analysis of lepton flavour violation. We show that it is not possible to quantitatively and decisively discriminate between these different theoretical possibilities at the present time.
supersymmetric effective theories
1-58
Kane, G.L.
3629b271-2d86-445d-af04-c37936e8f74f
King, S.F.
f8c616b7-0336-4046-a943-700af83a1538
Peddie, I.N.R.
0989ec2b-945a-494e-b585-41a6346db90d
Velasco-Sevilla, L.
e921886f-8129-43a2-afba-02b474381cc5
Kane, G.L.
3629b271-2d86-445d-af04-c37936e8f74f
King, S.F.
f8c616b7-0336-4046-a943-700af83a1538
Peddie, I.N.R.
0989ec2b-945a-494e-b585-41a6346db90d
Velasco-Sevilla, L.
e921886f-8129-43a2-afba-02b474381cc5

Kane, G.L., King, S.F., Peddie, I.N.R. and Velasco-Sevilla, L. (2005) Study of theory and phenomenology of some classes of family symmetry and unification models. Journal of High Energy Physics, 8 (83), 1-58. (doi:10.1088/1126-6708/2005/08/083).

Record type: Article

Abstract

We review and compare theoretically and phenomenologically a number of possible family symmetries, which when combined with unification, could be important in explaining quark, lepton and neutrino masses and mixings, providing new results in several cases. Theoretical possibilities include abelian or non-abelian, symmetric or non symmetric Yukawa matrices, Grand Unification or not. Our main focus is on anomaly-free U(1) family symmetry combined with SU(5) unification, although we also discuss other possibilities. We provide a detailed phenomenological fit of the fermion masses and mixings for several examples, and discuss the supersymmetric flavour issues in such theories, including a detailed analysis of lepton flavour violation. We show that it is not possible to quantitatively and decisively discriminate between these different theoretical possibilities at the present time.

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Published date: 2005
Keywords: supersymmetric effective theories

Identifiers

Local EPrints ID: 57335
URI: http://eprints.soton.ac.uk/id/eprint/57335
PURE UUID: 6c83c8da-0eb7-4b2e-b083-7ee3f1212003

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Date deposited: 14 Aug 2008
Last modified: 14 Aug 2019 17:45

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