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相关论文: Generalized $\mu-\tau$ reflection symmetry and lep…

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The $\mu-\tau$ reflection symmetry of the lepton mixing matrix accommodates maximal atmospheric mixing ($\theta_{23}=\pi/4$) as well as maximal Dirac CP phase ($\delta=\pm \pi/2$) for the Dirac case. In the standard parametrization of the…

高能物理 - 唯象学 · 物理学 2021-04-02 Chandan Duarah

In the context of remnant CP transformations, I briefly discuss a generalized $\mu-\tau$ reflection symmetry, where the "Majorana" phases have CP conserving values, which are directly related with the CP parities of neutrino states. Also,…

高能物理 - 唯象学 · 物理学 2016-11-23 Felix Gonzalez-Canales

We propose that leptonic CP violation arises from a breaking of the mu-tau exchange symmetry in the neutrino mass matrix which in turn is indicated by the near maximal atmospheric neutrino mixing and the near zero \theta_{13}. We find that…

高能物理 - 唯象学 · 物理学 2008-11-26 R. N. Mohapatra , W. Rodejohann

We propose a complex extension of mixed $\mu\tau$ antisymmetry in the neutrino Majorana mass matrix $M_\nu$. This can be implemented in the Lagrangian by a generalized CP transformation (labeled by a mixing parameter $\theta$) on the…

高能物理 - 唯象学 · 物理学 2019-02-27 Roopam Sinha , Probir Roy , Ambar Ghosal

We propose a simple mechanism which enforces |U_{mu j}| = | U_{tau j}| forall j = 1,2,3 in the lepton mixing matrix U. This implies maximal atmospheric neutrino mixing and a maximal CP-violating phase but does not constrain the reactor…

高能物理 - 唯象学 · 物理学 2015-06-05 P. M. Ferreira , W. Grimus , L. Lavoura , P. O. Ludl

Discovery of the CP-violation in the lepton sector is one of the challenges of the particle physics. We search for possible principles, symmetries and phenomenological relations that can lead to particular values of the CP-violating Dirac…

高能物理 - 唯象学 · 物理学 2010-10-27 Y. Farzan , A. Yu. Smirnov

Within the framework of residual symmetry, two $\mathbb{Z}_2$ type associate $\mu\tau$ interchange symmetries robustly constrain the Dirac CP phase $\delta$ in a model independent way. Both of them predict simultaneous maximality of…

高能物理 - 唯象学 · 物理学 2020-01-08 Rome Samanta , Roopam Sinha , Ambar Ghosal

Considering the $\mu$-$\tau$ symmetry, we discuss a direct linkage between phases of flavor neutrino masses and leptonic CP violation by determining three eigenvectors associated with ${\rm\bf M}=M^\dagger_\nu M_\nu$ for a complex flavor…

高能物理 - 唯象学 · 物理学 2008-11-26 Teppei Baba , Masaki Yasue

We find that the lepton flavor mixing matrix $U$ should possess a partial $\mu$-$\tau$ permutation symmetry $|U^{}_{\mu 1}| = |U^{}_{\tau 1}|$, and the latter predicts a novel correlation between the Dirac CP-violating phase $\delta$ and…

高能物理 - 唯象学 · 物理学 2014-09-01 Zhi-zhong Xing , Shun Zhou

$\mu-\tau$ reflection symmetry is an attractive flavour symmetry in lepton mixing, which accommodates maximal values of atmospheric mixing angle ($\theta_{23}=\pi/4$) and Dirac CP phase ($\delta=\pi/2/3\pi/2$). Another significance of this…

高能物理 - 唯象学 · 物理学 2025-10-16 Chandan Kumar Borah , Chandan Duarah

In this paper, we generally analyze the $\mu - \tau$ reflection symmetry modified by small mixings of charged leptons and how will future experiments verify deviations from the predictions of the symmetry. As an approximation, the…

高能物理 - 唯象学 · 物理学 2025-09-03 Masaki J. S. Yang

We investigate the consequences of $\mu-\tau$ reflection symmetry in presence of a light sterile neutrino for the $3+1$ neutrino mixing scheme. We discuss the implications of total $\mu-\tau$ reflection symmetry as well partial $\mu-\tau$…

高能物理 - 唯象学 · 物理学 2019-08-28 Kaustav Chakraborty , Srubabati Goswami , Biswajit Karmakar

Assuming a minimal seesaw model with two heavy neutrinos (N), we examine effects of leptonic CP violation induced by approximate mu-tau symmetric interactions. As long as N is subject to the mu-tau symmetry, we can choose CP phases of Dirac…

高能物理 - 唯象学 · 物理学 2008-11-26 Teppei Baba , Masaki Yasue

We estimate the effect of leptonic CP violating phases in the minimal seesaw model with two heavy neutrinos $N$ by imposing the approximately $\mu-\tau$ symmetry on the model. For $N$ subject to the $\mu-\tau$ symmetry, we find that…

高能物理 - 唯象学 · 物理学 2008-07-01 Teppei Baba

We examine the possibility that the lepton mixing matrix may exhibit a strong form of mu-tau universality, in which corresponding elements of the mu- and tau-neutrino flavour eigenstates have equal moduli, and find that it is consistent…

高能物理 - 唯象学 · 物理学 2009-11-07 P. F. Harrison , W. G. Scott

We consider a minimal condition that predicts the 1-3 lepton mixing angle $\theta_{13} \simeq \theta_{\rm C}/\sqrt{2}$ with $\theta_{\rm C}$ the Cabibbo angle, and give the improved prediction of $\theta_{13}$. In the case of normal mass…

高能物理 - 唯象学 · 物理学 2016-01-19 Junpei Harada

We consider a class of models of neutrino mixing with $S_4$ lepton flavour symmetry combined with a generalised CP symmetry, which are broken to residual $Z_2$ and $Z_2 \times H^\nu_{\rm CP}$ symmetries in the charged lepton and neutrino…

高能物理 - 唯象学 · 物理学 2017-12-07 J. T. Penedo , S. T. Petcov , A. V. Titov

In this work, we construct an A4-based flavor symmetry model within the framework of the type-I seesaw mechanism to realize a light neutrino mass matrix consistent with mu-tau reflection symmetry. The entire framework is based on the…

高能物理 - 唯象学 · 物理学 2026-04-09 Rupak Chakrabarty , Chandan Duarah

We consider minimal type-I seesaw framework to realize $ \mu-\tau $ reflection symmetry in the low-energy neutrino mass matrix, $ M_{\nu} $. Considering DUNE experiment, we scrutinize its potential to measure the precision of 2-3 mixing…

高能物理 - 唯象学 · 物理学 2018-10-19 Newton Nath

The generalized $\mu$-$\tau$ interchange symmetry in the leptonic mixing matrix $U$ corresponds to the relations: $|U_{\mu i}|=|U_{\tau i}|$ with $i=1,2,3$. It predicts maximal atmospheric mixing and maximal Dirac CP violation given…

高能物理 - 唯象学 · 物理学 2015-08-10 Anjan S. Joshipura , Ketan M. Patel
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