Quark-lepton complementarity and tribimaximal neutrino mixing from discrete symmetry

Journal Article · Fri Apr 01 00:00:00 EDT 2011 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.83.076012· OSTI ID:21537767

Ahn, Y H; Cheng, Hai-Yang; Oh, Sechul ^[1]

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1. Institute of Physics, Academia Sinica, Taipei 115, Taiwan (China)

The quark-lepton complementarity (QLC) relations indicate a deep structure that interrelates quarks and leptons. We propose new scenarios, in a seesaw framework with discrete A{sub 4} flavor symmetry, which can accommodate the QLC relations and the nonzero neutrino mixing angle {theta}{sub 13} together with all the available neutrino experimental data, in a consistent way to generate the Cabibbo-Kobayashi-Maskawa (CKM) matrix for the quark mixing. Certain effective dimension-5 operators are introduced, which induce a deviation of the lepton mixing matrix from the tribimaximal mixing pattern and lead the quark mixing matrix to the CKM one in form. We explicitly demonstrate three different possibilities of constructing the charged-lepton mixing matrix and point out that the phases of its elements play a crucial role to satisfy the QLC relations. We find that for the reactor mixing angle {theta}{sub 13} its possible values can vary around the center value sin{theta}{sub 13{approx_equal}{lambda}}/{radical}(2) ({lambda}{approx_equal}0.22 being the Cabbibo angle) and have the lower bound {theta}{sub 13} > or approx. 3.5 deg. We also show that sizable leptonic CP violation characterized by the Jarlskog invariant |J{sub CP}|{approx}O(10{sup -2}) is allowed, which is expected to be tested in future experiments such as the upcoming long baseline neutrino oscillation ones.

• OSTI ID: 21537767
• Journal Information: Physical Review. D, Particles Fields, Vol. 83, Issue 7; Other Information: DOI: 10.1103/PhysRevD.83.076012; (c) 2011 American Institute of Physics; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CP INVARIANCE
FLAVOR MODEL
KOBAYASHI-MASKAWA MATRIX
LEPTONS
NEUTRINO OSCILLATION
NEUTRINOS
QUARKS
SYMMETRY
WEINBERG ANGLE
COMPOSITE MODELS
ELEMENTARY PARTICLES
FERMIONS
INVARIANCE PRINCIPLES
MASSLESS PARTICLES
MATHEMATICAL MODELS
MATRICES
PARTICLE MODELS
QUARK MODEL