Vacuum misalignment corrections to tri-bimaximal mixing and form dominance
Vacuum misalignment corrections to tri-bimaximal mixing and form dominance
Tri-bimaximal neutrino mixing may arise from see-saw models based on family symmetry which is spontaneously broken by flavons with particular vacuum alignments. In this paper we derive approximate analytic results which express the deviations from tri-bimaximal neutrino mixing due to vacuum misalignment. We also relate vacuum misalignment to departures from form dominance, corresponding to complex deviations from the real orthogonal R matrix, where such corrections are necessary to allow for successful leptogenesis. The analytic results show that the corrections to tri-bimaximal mixing and form dominance depend on the pattern of the vacuum misalignment, with the two effects being uncorrelated.
neutrino physics, discrete and finite symmetries
1-30
King, Stephen F.
f8c616b7-0336-4046-a943-700af83a1538
January 2011
King, Stephen F.
f8c616b7-0336-4046-a943-700af83a1538
King, Stephen F.
(2011)
Vacuum misalignment corrections to tri-bimaximal mixing and form dominance.
Journal of High Energy Physics, 2011 (1), .
(doi:10.1007/JHEP01(2011)115).
Abstract
Tri-bimaximal neutrino mixing may arise from see-saw models based on family symmetry which is spontaneously broken by flavons with particular vacuum alignments. In this paper we derive approximate analytic results which express the deviations from tri-bimaximal neutrino mixing due to vacuum misalignment. We also relate vacuum misalignment to departures from form dominance, corresponding to complex deviations from the real orthogonal R matrix, where such corrections are necessary to allow for successful leptogenesis. The analytic results show that the corrections to tri-bimaximal mixing and form dominance depend on the pattern of the vacuum misalignment, with the two effects being uncorrelated.
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Published date: January 2011
Keywords:
neutrino physics, discrete and finite symmetries
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Local EPrints ID: 179031
URI: http://eprints.soton.ac.uk/id/eprint/179031
PURE UUID: 39c64006-59ae-46d0-b255-569dbe1dc1fd
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Date deposited: 31 Mar 2011 10:57
Last modified: 14 Mar 2024 02:47
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