Maximal neutrino mixing from a minimal flavor symmetry

Alfredo Aranda, Christopher D. Carone, Richard Lebed

Research output: Contribution to journalArticle

93 Citations (Scopus)

Abstract

We study a number of models, based on a non-Abelian discrete group, that successfully reproduce the simple and predictive Yukawa textures usually associated with U(2) theories of flavor. These models allow for solutions to the solar and atmospheric neutrino problems that do not require altering successful predictions for the charged fermions or introducing sterile neutrinos. Although Yukawa matrices are hierarchical in the models we consider, the mixing between second- and third-generation neutrinos is naturally large. We first present a quantitative analysis of a minimal model proposed in earlier work, consisting of a global fit to fermion masses and mixing angles, including the most important renormalization group effects. We then propose two new variant models: The first reproduces all important features of the SU(5)xU(2) unified theory with neither SU(5) nor U(2). The second demonstrates that discrete subgroups of SU(2) can be used in constructing viable supersymmetric theories of flavor without scalar universality even though SU(2) by itself cannot.

Original languageEnglish (US)
Article number016009
Pages (from-to)1-18
Number of pages18
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume62
Issue number1
StatePublished - Jul 1 2000
Externally publishedYes

Fingerprint

Neutrinos
neutrinos
Symmetry
Fermions
symmetry
Discrete Subgroup
Minimal Model
Discrete Group
Quantitative Analysis
Renormalization Group
Universality
fermions
Texture
Scalar
Model
Model-based
solar neutrinos
Angle
subgroups
Prediction

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Nuclear and High Energy Physics
  • Mathematical Physics
  • Physics and Astronomy (miscellaneous)

Cite this

Maximal neutrino mixing from a minimal flavor symmetry. / Aranda, Alfredo; Carone, Christopher D.; Lebed, Richard.

In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 62, No. 1, 016009, 01.07.2000, p. 1-18.

Research output: Contribution to journalArticle

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