Nonzero U{sub e3} and TeV leptogenesis through A{sub 4} symmetry breaking

Journal Article · Sat May 15 00:00:00 EDT 2010 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.81.105013· OSTI ID:21413448

Ahn, Y H ^[1]; Chen, C -S ^[1]

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

We consider an effective theory with an SU(2)xU(1)xA{sub 4}xZ{sub 2}xZ{sub 4} symmetry and investigate the possibility of a linking TeV-leptogenesis with a reactor angle |U{sub e3}| through A{sub 4} symmetry breaking which is at a scale higher than electroweak scale under the framework of radiative seesaw. It has been shown that tribimaximal (TBM) mixing can be obtained by forging vacuum expectation value alignment of the A{sub 4}. Especially, one A{sub 4} triplet scalar field with cutoff scale {Lambda} is added in neutrino Yukawa sector, which is responsible for the deviation of the exact TBM, to explain leptogenesis as well as a nonzero |U{sub e3}|. Above the scale of {Lambda} the leptonic Yukawa sectors will lead to the exact TBM. We analyze possible spectrums of light neutrinos and their flavor mixing angles corresponding to heavy Majorana neutrino mass ordering, and show that nonresonance leptogenesis at TeV scale constrained by low energy data is achievable, both analytically as well as numerically. We show that only normal hierarchical spectrum of light neutrino would be strongly favored by the current Wilkinson Microwave Anisotropy Probe data, and also show that a relatively large |U{sub e3}| corresponds to the value of baryon asymmetry 6.2x10{sup -10}.

• OSTI ID: 21413448
• Journal Information: Physical Review. D, Particles Fields, Vol. 81, Issue 10; Other Information: DOI: 10.1103/PhysRevD.81.105013; (c) 2010 The American Physical Society; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANISOTROPY
ASYMMETRY
BARYONS
EXPECTATION VALUE
FLAVOR MODEL
MAJORANA THEORY
MICROWAVE RADIATION
MIXING
NEUTRINOS
PARTICLE PRODUCTION
SCALAR FIELDS
SPECTRA
SU-2 GROUPS
SYMMETRY
SYMMETRY BREAKING
TEV RANGE
U-1 GROUPS
WEINBERG ANGLE
WEINBERG-SALAM GAUGE MODEL
YUKAWA POTENTIAL
COMPOSITE MODELS
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
FIELD THEORIES
HADRONS
LEPTONS
LIE GROUPS
MASSLESS PARTICLES
MATHEMATICAL MODELS
NUCLEAR POTENTIAL
PARTICLE MODELS
POTENTIALS
QUANTUM FIELD THEORY
QUARK MODEL
RADIATIONS
SU GROUPS
SYMMETRY GROUPS
U GROUPS
UNIFIED GAUGE MODELS
UNIFIED-FIELD THEORIES