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We reexamine the quark-lepton complementarity (QLC) in nine angle-phase parametrizations with the latest result of a large lepton mixing angle $\vartheta_{13}$ from the T2K, MINOS and Double Chooz experiments. We find that there are still…

High Energy Physics - Phenomenology · Physics 2012-05-24 Xinyi Zhang , Ya-juan Zheng , Bo-Qiang Ma

The quark-lepton complementarity (QLC) is very suggestive in understanding possible relations between quark and lepton mixing matrices. We explore the QLC relations in all the possible angle-phase parametrizations and point out that they…

High Energy Physics - Phenomenology · Physics 2010-05-12 Ya-juan Zheng

With the progress of increasingly precise measurements on the neutrino mixing angles, phenomenological relations such as quark-lepton complementarity (QLC) among mixing angles of quarks and leptons and self-complementarity (SC) among lepton…

High Energy Physics - Phenomenology · Physics 2012-11-20 Yijia Zhang , Xinyi Zhang , Bo-Qiang Ma

As a result of identification of the solution to the solar neutrino problem, a rather precise relation theta_{sun} + theta_C = pi/4 between the leptonic 1-2 mixing angle theta_{sun} and the Cabibbo angle has emerged. It would mean that the…

High Energy Physics - Phenomenology · Physics 2008-11-26 Hisakazu Minakata , Alexei Yu. Smirnov

It has been recognized recently that there is a remarkable empirical relation between lepton and quark mixing angles, theta_{12} + theta_C \approx pi/4. If not accidental, it should testify for yet uncovered new relationship between the…

High Energy Physics - Phenomenology · Physics 2007-05-23 Hisakazu Minakata

The quark-lepton complementarity (QLC) relations indicate a deep structure that interrelates quarks and leptons. We propose new scenarios, in a seesaw framework with discrete $A_4$ flavor symmetry, which can accommodate the QLC relations…

High Energy Physics - Phenomenology · Physics 2011-05-12 Y. H. Ahn , Hai-Yang Cheng , Sechul Oh

We present a unified parametrization of quark and lepton mixing matrices. By using some simple relations between the mixing angles of quarks and leptons, i.e., the quark-lepton complementarity, we parametrize the lepton mixing matrix with…

High Energy Physics - Phenomenology · Physics 2011-04-12 Nan Li , Bo-Qiang Ma

Parametrization of the quark and lepton mixing matrices is the first attempt to understand the mixing of fermions. In this work, we parameterize the quark and lepton matrices with the help of quark-lepton complementarity (QLC) in a…

High Energy Physics - Phenomenology · Physics 2008-11-26 Shi-Wen Li , Bo-Qiang Ma

We study deviations from tri-bimaximality (TBM) and quark-lepton complementarity (QLC) in a model independent way. The current neutrino experimental data is well approximated by tri-bimaximal generation mixing but the QLC relations are not…

High Energy Physics - Phenomenology · Physics 2011-05-03 Yusuke Shimizu , Ryo Takahashi

On the level of phenomenology unification-type idea of a basic connection between dimensionless mass and charge quantities requires particle mass copies and therefore is interesting as raison d'etre for particle flavor (degree of freedom).…

General Physics · Physics 2011-02-01 E. M. Lipmanov

As pointed out by many authors, recent observations are consistent with an intriguing relation between the Cabibbo angle $\theta_C$ and the solar neutrino mixing angle $\theta_{12}$, namely $\theta_{12} \simeq \pi/4 - \theta_C$. Such…

High Energy Physics - Phenomenology · Physics 2007-05-23 Stefan Antusch , Steve F. King , Rabindra N. Mohapatra

The mixing among flavors in quarks or leptons in terms of a single rotation angle is defined such that three flavor eigenvectors are transformed into three mass eigenvectors by a single rotation about a common axis. We propose that a…

High Energy Physics - Phenomenology · Physics 2011-08-31 Kee-Hwan Nam , Kim Siyeon , Seungsu Hwang

The recent experimental measurements of the solar neutrino mixing angle $\theta_{sol}$ and the Cabibbo mixing angle $\theta_C$ reveal a surprising relation, $ \theta_{sol}+\theta_C \simeq \frac{\pi}{4} $. We review that while this empirical…

High Energy Physics - Phenomenology · Physics 2009-04-25 Sin Kyu Kang , C. S. Kim , Jake Lee

Starting from a new zeroth order basis for quark mixing (CKM) matrix based on the quark-lepton complementarity and the tri-bimaximal pattern of lepton mixing, we derive a triminimal parametrization of CKM matrix with three small angles and…

High Energy Physics - Phenomenology · Physics 2008-12-30 Xiao-Gang He , Shi-Wen Li , Bo-Qiang Ma

We propose a new parametrization for the quark and lepton mixing matrices: the two 12-mixing angles (the Cabibbo angle and the angle responsible for solar neutrino oscillations) are at zeroth order pi/12 and pi/5, respectively. The…

High Energy Physics - Phenomenology · Physics 2010-04-21 Werner Rodejohann

In this paper, realistic CPT-symmetric united at substance quark and neutrino mixing matrices are studied by the idea that they are shifted from respectively unit and bimaximal benchmark matrices by one new small universal empirical…

General Physics · Physics 2010-07-06 E. M. Lipmanov

We discuss the relations between the mixing angles and the mixing matrices of quarks and leptons. With Raidal's numerical relations, we parametrize the lepton mixing (PMNS) matrix with the parameters of the quark mixing (CKM) matrix, and…

High Energy Physics - Phenomenology · Physics 2010-11-23 Nan Li , Bo-Qiang Ma

We consider a scenario for the Quark-Lepton Complementarity relations between mixing angles in which the bi-maximal mixing follows from the neutrino mass matrix. According to this scenario in the lowest order the angle \theta_{12} is \sim…

High Energy Physics - Phenomenology · Physics 2008-11-26 Michael A. Schmidt , Alexei Yu. Smirnov

A unified description of fermionic mixing is proposed which assumes that in certain basis ($i$) a single complex unitary matrix $V$ diagonalizes mass matrices of all fermions to the leading order, ($ii$) the SU(5) relation $M_d=M_l^T$…

High Energy Physics - Phenomenology · Physics 2009-11-11 Anjan S. Joshipura , A. Yu. Smirnov

The recent experimental measurements of the solar neutrino mixing angle $\theta_{sol}$ and the Cabibbo mixing angle $\theta_C$ reveal a surprising relation, $ \theta_{sol}+\theta_C \simeq \frac{\pi}{4}$. We note that the lepton mixing…

High Energy Physics - Phenomenology · Physics 2009-11-11 Sin Kyu Kang , C. S. Kim , Jake Lee
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