Tetramaximal neutrino mixing and its implications on neutrino oscillations and collider signatures

Journal Article · Tue Jul 01 04:00:00 EDT 2008 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.78.011301· OSTI ID:21250183

Zhizhong, Xing ^[1]

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1. Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049 (China) and Theoretical Physics Center for Science Facilities, Chinese Academy of Sciences, Beijing 100049 (China)

We propose a novel neutrino mixing pattern in terms of only two small integers 1 and 2 together with their square roots and the imaginary number i. This ansatz is referred to as the 'tetra-maximal' mixing because it can be expressed as a product of four rotation matrices, whose mixing angles are all {pi}/4 in the complex plane. It predicts {theta}{sub 12}=arctan(2-{radical}(2)){approx_equal}30.4 deg., {theta}{sub 13}=arcsin[({radical}(2)-1)/(2{radical}(2))]{approx_equal}8.4 deg., {theta}{sub 23}=45 deg. and {delta}=90 deg. in the standard parametrization, and the Jarlskog invariant of leptonic CP violation is found to be J=1/32. These results are compatible with current data and can soon be tested in a variety of neutrino oscillation experiments. Implications of the tetra-maximal neutrino mixing on the decays of doubly-charged Higgs bosons H{sup {+-}}{sup {+-}}{yields}l{sub {alpha}}{sup {+-}}l{sub {beta}}{sup {+-}} (for {alpha}, {beta}=e, {mu}, {tau}) are also discussed in the triplet seesaw mechanism at the TeV scale, which will be explored at the upcoming LHC.

• OSTI ID: 21250183
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 1 Vol. 78; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CERN LHC
CP INVARIANCE
HIGGS BOSONS
MIXING
NEUTRINO OSCILLATION
NEUTRINOS
PARTICLE DECAY
ROTATION
TEV RANGE
TRIPLETS
WEINBERG ANGLE