Testable constraint on near-tribimaximal neutrino mixing

被引：9
作者：
Brahmachari, Biswajoy [1 ]
Roy, Probir [2 ,3 ]
机构：
[1] Vidyasagar Evening Coll, Dept Phys, Kolkata 700006, India
[2] Saha Inst Nucl Phys, Kolkata 700064, India
[3] Bose Inst, Ctr Astroparticle Phys & Space Sci, Kolkata 700091, India
来源：
JOURNAL OF HIGH ENERGY PHYSICS | 2015年 / 02期
关键词：
Beyond Standard Model; Neutrino Physics; CP violation; SYMMETRY;
D O I：
10.1007/JHEP02(2015)135
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
General lowest order perturbations to hermitian squared mass matrices of leptons are considered away from the tribimaximal (TBM) limit in which a weak flavor basis with mass diagonal charged leptons is chosen. The three measurable TBM deviants are expressed linearly in terms of perturbation induced dimensionless coefficients appearing in the charged lepton and neutrino flavor eigenstates. With unnatural cancellations assumed to be absent and the charged lepton perturbation contributions to their flavor eigenstates argued to be small, we analytically derive the following result. Within lowest order perturbations, a deviation from maximal atmospheric neutrino mixing and the amount of CP violation in neutrino oscillations cannot both be large (i.e. 12-17%), posing the challenge of verification to forthcoming experiments at the intensity frontier.
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页数：18
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