Parametrizing the lepton mixing matrix in terms of deviations from tri-bimaximal mixing
Parametrizing the lepton mixing matrix in terms of deviations from tri-bimaximal mixing
We propose a parametrization of the lepton mixing matrix in terms of an expansion in powers of the deviations of the reactor, solar and atmospheric mixing angles from their tri-bimaximal values. We show that unitarity triangles and neutrino oscillation formulae have a very compact form when expressed in this parametrization, resulting in considerable simplifications when dealing with neutrino phenomenology. The parametrization, which is completely general, should help to establish possible relations between the deviations of the reactor, solar and atmospheric mixing angles from their tri-bimaximal values, and hence enable models which predict such relations to be more directly compared to experiment.
244-251
King, S.F.
f8c616b7-0336-4046-a943-700af83a1538
17 January 2008
King, S.F.
f8c616b7-0336-4046-a943-700af83a1538
King, S.F.
(2008)
Parametrizing the lepton mixing matrix in terms of deviations from tri-bimaximal mixing.
Physics Letters B, 659 (1-2), .
(doi:10.1016/j.physletb.2007.10.078).
Abstract
We propose a parametrization of the lepton mixing matrix in terms of an expansion in powers of the deviations of the reactor, solar and atmospheric mixing angles from their tri-bimaximal values. We show that unitarity triangles and neutrino oscillation formulae have a very compact form when expressed in this parametrization, resulting in considerable simplifications when dealing with neutrino phenomenology. The parametrization, which is completely general, should help to establish possible relations between the deviations of the reactor, solar and atmospheric mixing angles from their tri-bimaximal values, and hence enable models which predict such relations to be more directly compared to experiment.
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e-pub ahead of print date: 3 December 2007
Published date: 17 January 2008
Organisations:
Physics & Astronomy
Identifiers
Local EPrints ID: 57373
URI: http://eprints.soton.ac.uk/id/eprint/57373
ISSN: 0370-2693
PURE UUID: 27038b96-b9bb-4090-9cc5-3495dd00f503
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Date deposited: 14 Aug 2008
Last modified: 15 Mar 2024 11:06
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