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Perturbative estimates of lepton mixing angles in unified models
KTH, School of Engineering Sciences (SCI), Theoretical Physics, Theoretical Particle Physics.
2009 (English)In: Nuclear Physics B, ISSN 0550-3213, E-ISSN 1873-1562, Vol. 820, no 1-2, 32-46 p.Article in journal (Refereed) Published
Abstract [en]

Many unified models predict two large neutrino mixing angles, with the charged lepton mixing angles being small and quark-like, and the neutrino masses being hierarchical. Assuming this, we present simple approximate analytic formulae giving the lepton mixing angles in terms of the underlying high energy neutrino mixing angles together with small perturbations due to both charged lepton corrections and renormalisation group (RG) effects, including also the effects of third family canonical normalization (CN). We apply the perturbative formulae to the ubiquitous case of tri-bimaximal neutrino mixing at the unification scale, in order to predict the theoretical corrections to mixing angle predictions and sum rule relations, and give a general discussion of all limiting cases. We also discuss the implications for the sum rule relations of the measurement of a non-zero reactor angle, as hinted at by recent experimental measurements.

Place, publisher, year, edition, pages
2009. Vol. 820, no 1-2, 32-46 p.
Keyword [en]
HANDED NEUTRINO DOMINANCE, FAMILY SYMMETRY, SEQUENTIAL DOMINANCE, MASS OPERATOR, CP PHASES, RENORMALIZATION, MATRIX, OSCILLATIONS, UNIFICATION, EQUATIONS
National Category
Subatomic Physics
Identifiers
URN: urn:nbn:se:kth:diva-32287DOI: 10.1016/j.nuclphysb.2009.05.006ISI: 000268305000002Scopus ID: 2-s2.0-67649444312OAI: oai:DiVA.org:kth-32287DiVA: diva2:409962
Note
QC 20110412Available from: 2011-04-12 Created: 2011-04-11 Last updated: 2017-12-11Bibliographically approved

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