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Kaehler corrections and softly broken family symmetries

Kaehler corrections and softly broken family symmetries
Kaehler corrections and softly broken family symmetries
Spontaneously broken family symmetry provides a promising origin for the observed quark and lepton mass and mixing angle structure. In a supersymmetric theory such structure comes from a combination of the contributions from the superpotential and the Kähler potential. The superpotential effects have been widely studied but relatively little attention has been given to the effects of the Kähler sector. In this paper we develop techniques to simplify the analysis of such Kähler effects. Using them we show that in the class of theories with an hierarchical structure for the Yukawa couplings the Kähler corrections to both the masses and mixing angles are subdominant. This is true even in cases that texture zeros are filled in by the terms coming from the Kähler potential.
supersymmetry phenomenology, supergravity models, quark masses and sm parameters
1-17
King, S.F.
f8c616b7-0336-4046-a943-700af83a1538
Peddie, I.N.R.
0989ec2b-945a-494e-b585-41a6346db90d
Ross, G.G.
d58064ce-8a29-4bfc-b438-ef29b0a16bcb
Velasco-Sevilla, L.
e921886f-8129-43a2-afba-02b474381cc5
Vives, O.
699eae2b-d87a-413a-85fe-310f09ca5dc2
King, S.F.
f8c616b7-0336-4046-a943-700af83a1538
Peddie, I.N.R.
0989ec2b-945a-494e-b585-41a6346db90d
Ross, G.G.
d58064ce-8a29-4bfc-b438-ef29b0a16bcb
Velasco-Sevilla, L.
e921886f-8129-43a2-afba-02b474381cc5
Vives, O.
699eae2b-d87a-413a-85fe-310f09ca5dc2

King, S.F., Peddie, I.N.R., Ross, G.G., Velasco-Sevilla, L. and Vives, O. (2005) Kaehler corrections and softly broken family symmetries. Journal of High Energy Physics, 7 (49), 1-17. (doi:10.1088/1126-6708/2005/07/049).

Record type: Article

Abstract

Spontaneously broken family symmetry provides a promising origin for the observed quark and lepton mass and mixing angle structure. In a supersymmetric theory such structure comes from a combination of the contributions from the superpotential and the Kähler potential. The superpotential effects have been widely studied but relatively little attention has been given to the effects of the Kähler sector. In this paper we develop techniques to simplify the analysis of such Kähler effects. Using them we show that in the class of theories with an hierarchical structure for the Yukawa couplings the Kähler corrections to both the masses and mixing angles are subdominant. This is true even in cases that texture zeros are filled in by the terms coming from the Kähler potential.

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More information

Published date: 2005
Keywords: supersymmetry phenomenology, supergravity models, quark masses and sm parameters

Identifiers

Local EPrints ID: 57387
URI: http://eprints.soton.ac.uk/id/eprint/57387
PURE UUID: 4a741b0b-3018-447b-a1b9-7a2680876fb6

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Date deposited: 14 Aug 2008
Last modified: 30 Jul 2019 17:43

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