Chinese Physics C > 2012, Vol. 36 > Issue(2): 101-105 DOI: 10.1088/1674-1137/36/2/001

T2K indication of relatively largeθ₁₃and a natural perturbation to the democratic neutrino mixing pattern

XING Zhi-Zhong^,

Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China

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Abstract：
The T2K Collaboration has recently reported a remarkable indication of the ν→ν oscillation which is consistent with a relatively large value of θ ₁₃in the three-flavor neutrino mixing scheme. We show that it is possible to account for such a result of θ ₁₃by introducing a natural perturbation to the democratic neutrino mixing pattern, without or with CPviolation. A testable correlation between θ ₁₃and θ ₂₃is predicted in this ansatz. We also discuss the Wolfenstein-like parametrization of neutrino mixing, and comment on other possibilities of generating sufficiently large θ ₁₃at the electroweak scale.

References

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XING Zhi-Zhong. T2K indication of relatively large θ ₁₃and a natural perturbation to the democratic neutrino mixing pattern[J]. Chinese Physics C, 2012, 36(2): 101-105. doi: 10.1088/1674-1137/36/2/001

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Received: 2011-08-31
Revised: 2011-05-06

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通讯作者:陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

T2K indication of relatively largeθ₁₃and a natural perturbation to the democratic neutrino mixing pattern

Corresponding author:XING Zhi-Zhong,

Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China

Received Date:2011-08-31

Accepted Date:2011-05-06

Available Online:2012-02-05

Abstract:The T2K Collaboration has recently reported a remarkable indication of the ν→ν oscillation which is consistent with a relatively large value ofθ₁₃in the three-flavor neutrino mixing scheme. We show that it is possible to account for such a result ofθ₁₃by introducing a natural perturbation to the democratic neutrino mixing pattern, without or withCPviolation. A testable correlation betweenθ₁₃andθ₂₃is predicted in this ansatz. We also discuss the Wolfenstein-like parametrization of neutrino mixing, and comment on other possibilities of generating sufficiently largeθ₁₃at the electroweak scale.

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T2K indication of relatively largeθ₁₃and a natural perturbation to the democratic neutrino mixing pattern

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