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相关论文: Towards establishing the second $b$-flavored CKM u…

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I will review the latest developments in determining the CP-violating phases of the CKM matrix elements from measurements by the BaBar and BELLE experiments at the high-luminosity B factories (PEP-II and KEKB). The emphasis will be on the…

高能物理 - 实验 · 物理学 2010-06-22 Owen Long

Inspired by a new relation $\theta_{13}^{\rm PMNS}={\theta_C}/{\sqrt{2}}$ observed from the relatively large $\theta_{13}^{\rm PMNS}$, we find that the combination of this relation with the quark-lepton complementarity and the…

高能物理 - 唯象学 · 物理学 2012-11-20 Xinyi Zhang , Bo-Qiang Ma

Although different parametrizations of quark mixing matrix are mathematically equivalent, the consequences of experimental analysis may be distinct. Based on the triminimal expansion of Kobayashi-Maskawa matrix around the unit matrix, we…

高能物理 - 唯象学 · 物理学 2011-01-27 Nan Qin , Bo-Qiang Ma

A shape of the unitary triangle versus a CP violating parameter \delta depends on the phase conventions of the CKM matrix, because the CP violating parameter \delta cannot directly be observed, so that it is not rephasing-invariant. In…

高能物理 - 唯象学 · 物理学 2014-11-18 Yoshio Koide

Measurements of CP asymmetries in B decays will soon be made at $B$ factories and hadron machines. In light of this, we review and update the profile of the CKM unitarity triangle and the resulting CP asymmetries in B decays. This is done…

高能物理 - 唯象学 · 物理学 2007-05-23 Ahmed Ali , David London

The latest fits to the CKM matrix indicate that alpha=(90.7+4.5-2.9) degrees. The proximity of alpha to a right-angle raises the question: is it merely accidental or is it due to some physics beyond the Standard Model? In the framework of…

高能物理 - 唯象学 · 物理学 2009-04-21 P. F. Harrison , D. R. J. Roythorne , W. G. Scott

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…

综合物理 · 物理学 2010-07-06 E. M. Lipmanov

We present the update of the Unitarity Triangle (UT) analysis within the Standard Model (SM) and beyond. Within the SM, combining the direct measurements on sides and angles, the UT turns out to be overconstraint in a consistent way,…

高能物理 - 唯象学 · 物理学 2010-02-25 Cecilia Tarantino

We look for relations among CKM matrix elements that are not consequences of the Wolfenstein parametrization. In particular, we search for products of CKM elements raised to integer powers that approximately equal $1$. We study the running…

高能物理 - 唯象学 · 物理学 2022-06-29 Yuval Grossman , Ameen Ismail , Joshua T. Ruderman , Tien-Hsueh Tsai

We describe a solution to a long standing puzzle about the difference in textures of quark CKM and lepton PMNS mixing matrices by deriving their common representation. We show how the difference in texture of the two matrices arises from…

高能物理 - 唯象学 · 物理学 2012-09-11 Alexander N. Jourjine

Phenomenological issues of the CP violation in the quark sector of the Standard Model are discussed. We consider quark mixing in the SM, standard and Wolfenstein parametrization of the $CKM$ mixing matrix and unitarity triangle. We discuss…

高能物理 - 唯象学 · 物理学 2008-11-26 S. M. Bilenky

Motivated by the recent determination of the top quark mass by the CDF collaboration, $\mt =174 \pm 10 ^{+13}_{-12}$ GeV, we review and update the constraints on the parameters of the quark flavour mixing matrix $V_{CKM}$ in the standard…

高能物理 - 唯象学 · 物理学 2010-11-01 A. Ali , D. London

The hierarchy amongst the CKM matrix elements, highlighted recently by Luo and Xing, has been rigorously revisited using the PDG parameterization incorporating unitarity constraints. Further, we have explored the evaluation of the CP…

高能物理 - 唯象学 · 物理学 2024-08-02 Gurjit Kaur , Gulsheen Ahuja , Dheeraj Shukla , Manmohan Gupta

A general operator expansion is presented for quark and lepton mass matrices in unified theories based on a U(2) flavor symmetry, with breaking parameter of order $V_{cb} \approx m_s/m_b \approx \sqrt{m_c/m_t}$. While solving the…

高能物理 - 唯象学 · 物理学 2009-10-30 R. Barbieri , L. J. Hall , S. Raby , A. Romanino

After listing basic properties of the Standard Model (SM) that play the crucial role in the field of flavour and CP violation, we discuss the following topics: 1) CKM matrix and the unitarity triangle. 2) Theoretical framework in a…

高能物理 - 唯象学 · 物理学 2007-05-23 Andrzej J. Buras

We present a detailed study on triminimal parametrizations of quark and lepton mixing matrices with different basis matrices. We start with a general discussion on the triminimal expansion of the mixing matrix and on possible unified quark…

高能物理 - 唯象学 · 物理学 2009-04-22 Xiao-Gang He , Shi-Wen Li , Bo-Qiang Ma

We discuss the determination of the CKM parameters from the forthcoming $CP$ violation observables in $B_s \to K^+ K^-$ decays. Combining the information on mixing induced CP violation in $B_s \to K^+ K^-$, with the $B_d \to J/\psi K_s$…

高能物理 - 唯象学 · 物理学 2010-11-23 A. Salim Safir

We investigate a general structure of lepton mixing matrix resulting from the SU$_F$(3) gauge family model with an appropriate vacuum structure of SU$_F$(3) symmetry breaking. It is shown that the lepton mixing matrix can be parametrized by…

高能物理 - 唯象学 · 物理学 2015-06-19 Zhuo Liu , Yue-Liang Wu

Current experimental data indicate that two unitarity triangles of the CKM quark flavor mixing matrix V are almost the right triangles with \alpha \approx 90^\circ. We find that \alpha = 90^\circ actually points to {\rm…

高能物理 - 唯象学 · 物理学 2009-08-17 Zhi-zhong Xing

We show that not only the hierarchical quark CKM mixing matrix but also the "bimaximal" lepton flavor mixing matrix can be derived from the same mass matrix ansatz based on the broken permutation symmetry, by assuming the hierarchy of…

高能物理 - 唯象学 · 物理学 2016-09-06 C. S. Kim , J. D. Kim