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Title: Phenomenology in the Zee model with the A{sub 4} symmetry

Abstract

The Zee model generates neutrino masses at the one-loop level by adding charged SU(2){sub L}-singlet and extra SU(2){sub L}-doublet scalars to the standard model of particle physics. We introduce the softly broken A{sub 4} symmetry to the Zee model as the origin of the nontrivial structure of the lepton flavor mixing. This model is compatible with the tribimaximal mixing which agrees well with neutrino oscillation measurements. Then, a sum rule m{sub 1}e{sup i{alpha}{sub 12}}+2m{sub 2}+3m{sub 3}e{sup i{alpha}{sub 32}}=0 is obtained and it results in {Delta}m{sub 31}{sup 2}<0 and m{sub 3}{>=}1.8x10{sup -2} eV. The effective mass |(M{sub {nu}}){sub ee}| for the neutrinoless double beta decay is predicted as |(M{sub {nu}}){sub ee}|{>=}1.7x10{sup -2} eV. The characteristic particles in this model are SU(2){sub L}-singlet charged Higgs bosons s{sub {alpha}}{sup +}({alpha}={xi},{eta},{zeta}) which are made from a 3 representation of A{sub 4}. Contributions of s{sub {alpha}}{sup {+-}} to the lepton flavor violating decays of charged leptons are almost forbidden by an approximately remaining Z{sub 3} symmetry; only BR({tau}{yields}{bar e}{mu}{mu}) can be sizable by the flavor changing neutral current interaction with SU(2){sub L}-doublet scalars. Therefore, s{sub {alpha}}{sup {+-}} can easily be light enough to be discovered at the LHC with satisfying current constraints. The flavor structuresmore » of BR(s{sub {alpha}}{sup -}{yields}l{nu}) are also discussed.« less

Authors:
 [1];  [1];  [2]
  1. Department of Physics and R-GIRO, Ritsumeikan University, Kusatsu, Shiga 525-8577 (Japan)
  2. The Abdus Salam ICTP of UNESCO and IAEA, Strada Costiera 11, 34151 Trieste (Italy)
Publication Date:
OSTI Identifier:
21537474
Resource Type:
Journal Article
Journal Name:
Physical Review. D, Particles Fields
Additional Journal Information:
Journal Volume: 83; Journal Issue: 5; Other Information: DOI: 10.1103/PhysRevD.83.056016; (c) 2011 American Institute of Physics; Journal ID: ISSN 0556-2821
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; CERN LHC; DOUBLE BETA DECAY; EFFECTIVE MASS; FLAVOR MODEL; HIGGS BOSONS; NEUTRAL-CURRENT INTERACTIONS; NEUTRINO OSCILLATION; NEUTRINOS; PARTICLE DECAY; STANDARD MODEL; SU-2 GROUPS; SUM RULES; SYMMETRY BREAKING; ACCELERATORS; BETA DECAY; BETA-MINUS DECAY; BOSONS; COMPOSITE MODELS; CYCLIC ACCELERATORS; DECAY; ELEMENTARY PARTICLES; EQUATIONS; FERMIONS; FIELD THEORIES; GRAND UNIFIED THEORY; INTERACTIONS; LEPTONS; LIE GROUPS; MASS; MASSLESS PARTICLES; MATHEMATICAL MODELS; NUCLEAR DECAY; PARTICLE INTERACTIONS; PARTICLE MODELS; POSTULATED PARTICLES; QUANTUM FIELD THEORY; QUARK MODEL; STORAGE RINGS; SU GROUPS; SYMMETRY GROUPS; SYNCHROTRONS; UNIFIED GAUGE MODELS

Citation Formats

Fukuyama, Takeshi, Maskawa Institute for Science and Culture, Kyoto Sangyo University, Kyoto 603-8555, Sugiyama, Hiroaki, Tsumura, Koji, and Department of Physics, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei, Taiwan. Phenomenology in the Zee model with the A{sub 4} symmetry. United States: N. p., 2011. Web. doi:10.1103/PHYSREVD.83.056016.
Fukuyama, Takeshi, Maskawa Institute for Science and Culture, Kyoto Sangyo University, Kyoto 603-8555, Sugiyama, Hiroaki, Tsumura, Koji, & Department of Physics, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei, Taiwan. Phenomenology in the Zee model with the A{sub 4} symmetry. United States. doi:10.1103/PHYSREVD.83.056016.
Fukuyama, Takeshi, Maskawa Institute for Science and Culture, Kyoto Sangyo University, Kyoto 603-8555, Sugiyama, Hiroaki, Tsumura, Koji, and Department of Physics, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei, Taiwan. Tue . "Phenomenology in the Zee model with the A{sub 4} symmetry". United States. doi:10.1103/PHYSREVD.83.056016.
@article{osti_21537474,
title = {Phenomenology in the Zee model with the A{sub 4} symmetry},
author = {Fukuyama, Takeshi and Maskawa Institute for Science and Culture, Kyoto Sangyo University, Kyoto 603-8555 and Sugiyama, Hiroaki and Tsumura, Koji and Department of Physics, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei, Taiwan},
abstractNote = {The Zee model generates neutrino masses at the one-loop level by adding charged SU(2){sub L}-singlet and extra SU(2){sub L}-doublet scalars to the standard model of particle physics. We introduce the softly broken A{sub 4} symmetry to the Zee model as the origin of the nontrivial structure of the lepton flavor mixing. This model is compatible with the tribimaximal mixing which agrees well with neutrino oscillation measurements. Then, a sum rule m{sub 1}e{sup i{alpha}{sub 12}}+2m{sub 2}+3m{sub 3}e{sup i{alpha}{sub 32}}=0 is obtained and it results in {Delta}m{sub 31}{sup 2}<0 and m{sub 3}{>=}1.8x10{sup -2} eV. The effective mass |(M{sub {nu}}){sub ee}| for the neutrinoless double beta decay is predicted as |(M{sub {nu}}){sub ee}|{>=}1.7x10{sup -2} eV. The characteristic particles in this model are SU(2){sub L}-singlet charged Higgs bosons s{sub {alpha}}{sup +}({alpha}={xi},{eta},{zeta}) which are made from a 3 representation of A{sub 4}. Contributions of s{sub {alpha}}{sup {+-}} to the lepton flavor violating decays of charged leptons are almost forbidden by an approximately remaining Z{sub 3} symmetry; only BR({tau}{yields}{bar e}{mu}{mu}) can be sizable by the flavor changing neutral current interaction with SU(2){sub L}-doublet scalars. Therefore, s{sub {alpha}}{sup {+-}} can easily be light enough to be discovered at the LHC with satisfying current constraints. The flavor structures of BR(s{sub {alpha}}{sup -}{yields}l{nu}) are also discussed.},
doi = {10.1103/PHYSREVD.83.056016},
journal = {Physical Review. D, Particles Fields},
issn = {0556-2821},
number = 5,
volume = 83,
place = {United States},
year = {2011},
month = {3}
}