Direct link between neutrinoless double beta decay and leptogenesis in a seesaw model with S{sub 4} symmetry

Journal Article · Mon Nov 01 00:00:00 EDT 2010 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.82.093005· OSTI ID:21503769

Ahn, Y H ^[1]; Kang, Sin Kyu ^[2]; Kim, C S ^[3]; Nguyen, T Phong ^[3]

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1. Institute of Physics, Academia Sinica, Taipei 115, Taiwan (China)
2. School of Liberal Arts, Seoul National Univ. of Technology, Seoul 139-743 (Korea, Republic of)
3. Department of Physics and IPAP, Yonsei University, Seoul 120-749 (Korea, Republic of)

We study how leptogenesis can be implemented in a seesaw model with S{sub 4} flavor symmetry, which leads to the neutrino tribimaximal mixing matrix and degenerate right-handed (RH) neutrino spectrum. Introducing a tiny soft S{sub 4} symmetry breaking term in the RH neutrino mass matrix, we show that the flavored resonant leptogenesis can be successfully realized, which can lower the seesaw scale much so, as to make it possible to probe in colliders. Even though such a tiny soft breaking term is essential for leptogenesis, it does not significantly affect the low-energy observables. We also investigate how the effective light neutrino mass |<m{sub ee}>| associated with neutrinoless double beta decay can be predicted along with the neutrino mass hierarchies by imposing experimental data of low-energy observables. We find a direct link between leptogenesis and neutrinoless double beta decay characterized by |<m{sub ee}>| through a high energy CP phase {phi}, which is correlated with low-energy Majorana CP phases. It is shown that our predictions of |<m{sub ee}>| for some fixed parameters of high energy physics can be constrained by the current observation of baryon asymmetry.

• OSTI ID: 21503769
• Journal Information: Physical Review. D, Particles Fields, Vol. 82, Issue 9; Other Information: DOI: 10.1103/PhysRevD.82.093005; (c) 2010 American Institute of Physics; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ASYMMETRY
BARYONS
CP INVARIANCE
DOUBLE BETA DECAY
FLAVOR MODEL
FORECASTING
HIGH ENERGY PHYSICS
LEPTONS
MAJORANA THEORY
MASS
MIXING
NEUTRINOS
PARTICLE PRODUCTION
SPECTRA
SYMMETRY
SYMMETRY BREAKING
BETA DECAY
BETA-MINUS DECAY
COMPOSITE MODELS
DECAY
ELEMENTARY PARTICLES
FERMIONS
HADRONS
INVARIANCE PRINCIPLES
MASSLESS PARTICLES
MATHEMATICAL MODELS
NUCLEAR DECAY
PARTICLE MODELS
PHYSICS
QUARK MODEL