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Title

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

AuthorsHirsch, Martin ; Ma, Ernest; Romao, J. C.; Valle, José W. F. ; Villanova del Moral, Albert
KeywordsMass operator renormalization
Right symmetry-breaking
Number nonconservation
[PACS] Neutrino mass and mixing
[PACS] Supersymmetric unified models
Issue Date13-Mar-2007
PublisherAmerican Physical Society
CitationPhysical Review D 75(5): 053006 (2007)
SeriesIFIC/06-21
AbstractWe 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.
Description7 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
Publisher version (URL)http://dx.doi.org/10.1103/PhysRevD.75.053006
URIhttp://hdl.handle.net/10261/9096
DOI10.1103/PhysRevD.75.053006
ISSN1550-7998
Appears in Collections:(IFIC) Artículos
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