Atmospheric Neutrino octant from flavor symmetry

IF 1.5 4区 物理与天体物理 Q3 ASTRONOMY & ASTROPHYSICS Modern Physics Letters A Pub Date : 2024-04-19 DOI:10.1142/s0217732324500287
Paul H. Frampton, Claudio Corianò, Pietro Santorelli
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Abstract

The binary tetrahedral group (T) has provided the most successful flavor symmetry in understanding simultaneously the three mixing angles both for quarks in the CKM matrix and for neutrinos in the PMNS matrix. One prediction, invariant under leptonic CP violation, relates the atmospheric and reactor neutrino mixings θ32 and θ13, respectively. We study sedulously this relation using the latest neutrino data. It is natural to focus on the frustrating experimental octant ambiguity of θ32. We conclude that the flavor symmetry requires that θ32 is in the second octant θ32>45, not in the first one θ32<45, and eagerly await experimental confirmation of this prediction.

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从味道对称性看大气中微子八分仪
二元四面体群(T′)提供了最成功的味道对称性,可以同时理解CKM矩阵中的夸克和PMNS矩阵中的中微子的三个混合角。在轻子CP违反下不变的一个预言,分别与大气中微子混合和反应堆中微子混合θ32和θ13有关。我们利用最新的中微子数据对这一关系进行了深入研究。我们很自然地把重点放在θ32令人沮丧的实验八度模糊性上。我们得出结论:味道对称性要求θ32位于第二个八度角θ32>45∘,而不是第一个八度角θ32<45∘,并热切期待这一预言得到实验证实。
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来源期刊
Modern Physics Letters A
Modern Physics Letters A 物理-物理:核物理
CiteScore
3.10
自引率
7.10%
发文量
186
审稿时长
3 months
期刊介绍: This letters journal, launched in 1986, consists of research papers covering current research developments in Gravitation, Cosmology, Astrophysics, Nuclear Physics, Particles and Fields, Accelerator physics, and Quantum Information. A Brief Review section has also been initiated with the purpose of publishing short reports on the latest experimental findings and urgent new theoretical developments.
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