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Minimal supergravity radiative effects on the tri-bimaximal neutrino mixing pattern

Autor Hirsch, Martin ; Ma, Ernest; Romao, J. C.; Valle, José W. F. ; Villanova del Moral, Albert
Palabras clave Mass operator renormalization
Right symmetry-breaking
Number nonconservation
[PACS] Neutrino mass and mixing
[PACS] Supersymmetric unified models
Fecha de publicación 13-mar-2007
EditorAmerican Physical Society
Citación Physical Review D 75(5): 053006 (2007)
Serie IFIC/06-21
ResumenWe study the stability of the Harrison-Perkins-Scott (HPS) mixing pattern, assumed to hold at some high energy scale, against supersymmetric radiative corrections. We work in the framework of a reference minimal supergravity model (mSUGRA) where supersymmetry breaking is universal and flavor-blind at unification. The radiative corrections considered include both RGE running as well as threshold effects. We find that in this case the solar mixing angle can only increase with respect to the HPS reference value, while the atmospheric and reactor mixing angles remain essentially stable. Deviations from the solar angle HPS prediction towards lower values would signal novel contributions from physics beyond the simplest mSUGRA model.
Descripción 7 pages, 3 figures.-- PACS nrs.: 14.60.Pq, 12.60.Jv.-- ISI Article Identifier: 000245333000012.-- ArXiv pre-print available at: http://arxiv.org/abs/hep-ph/0606082
Versión del editorhttp://dx.doi.org/10.1103/PhysRevD.75.053006
URI http://hdl.handle.net/10261/9096
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