Journal
PHYSICS LETTERS B
Volume 671, Issue 2, Pages 263-266Publisher
ELSEVIER
DOI: 10.1016/j.physletb.2008.12.013
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Funding
- PPARC Rolling [PPA/G/S/ 2003/00096]
- EU Network [MRTN-CT-2004-503369]
- EU ILIAS [R113-CT-2004-506222]
- NATO [PST.CLG. 980066]
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We investigate the theoretical stability of the predictions of tri-bimaximal neutrino mixing with respect to third family wave-function corrections. Such third family wave-function corrections can arise from either the canonical normalisation of the kinetic terms or renormalisation group running effects. At leading order both sorts of corrections can be subsumed into a single universal parameter. For hierarchical neutrinos. this leads to a new testable lepton mixing Sum rule s = rcos delta + 2/3 a (where s, r, a describe the deviations of solar, reactor and atmospheric mixing angles from their tri-bimaximal values, and delta is the observable Dirac CP phase) which is stable under all leading order third family wave-function corrections, as well as Cabibbo-like charged lepton mixing effects. (C) 2008 Elsevier B.N. All rights reserved.
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