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

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Concise variable transformations between the four angles of the CKM matrix in the standard representation advocated by the Particle Data Group and the angles of the unitarity triangles are derived. The behavior of these transformations in…

高能物理 - 唯象学 · 物理学 2008-11-26 Richard F. Lebed

In a large class of models, the only significant new physics effect on the CP asymmetries in $B \to \psi K_S$ and $B \to \pi\pi$ decays is a new contribution to the $B-\bar B$ mixing amplitude. This allows a model independent construction…

高能物理 - 唯象学 · 物理学 2010-11-23 Yuval Grossman , Yosef Nir , Mihir P. Worah

We study a class of quark mass matrix models with the $\cal CP$-violating phase determined through making the $\cal CP$-violating parameter $J$ an extremum. These models assume that $m_u \ll m_c \ll m_t$ and that $m_d \ll m_s \ll m_b$. They…

高能物理 - 唯象学 · 物理学 2007-05-23 B. Margolis , S. Punch , ; C. Hamzaoui

The CKM matrix, V, relates the quark mass and flavor bases. In the standard model, V is unitary 3X3, and specified by four arbitrary parameters, including a phase allowing for $CP$ violation. We review the experimental determination of V,…

高能物理 - 实验 · 物理学 2016-11-23 Frank C. Porter

We give an overview of direct determinations of the angles of the unitarity triangle of the CKM matrix, using CP-violating effects in B-meson decays. After a discussion of B --> pi K modes, which can be described efficiently through allowed…

高能物理 - 唯象学 · 物理学 2010-11-23 Robert Fleischer

These lectures give a brief description of CP violation in B and K meson decays with particular emphasize put on the determination of the CKM matrix. The following topics will be discussed: i) The CKM matrix, the unitarity triangle and…

高能物理 - 唯象学 · 物理学 2017-08-23 Andrzej J. Buras

Flavour mixing and CP violation as measured in weak decays and mixing of neutral mesons are a fundamental tool to test the Standard Model (SM) and to search for new physics. New analyses performed at the LHC experiment open an unprecedented…

We have analyzed how much the $CP$ angles to be measured at B factories can deviate from the geometrical ones defined in unitarity triangle under the existence of new physics. The measurements are given in rephasing invariant form. If KM…

高能物理 - 唯象学 · 物理学 2009-10-30 T. Kurimoto , A. Tomita

We show that the quark flavour structure and CP violating phenomena are strongly correlated in supersymmetric theories. For a generic pattern of supersymmetry breaking the two broad categories of Yukawa couplings, democratic and…

高能物理 - 唯象学 · 物理学 2014-11-17 S. Abel , G. C. Branco , S. Khalil

The unitarity of the CKM matrix is examined in the light of the latest available accurate data. The analysis shows that for the elements in the first row, there are two types of experimental measurements leading to different results for the…

高能物理 - 唯象学 · 物理学 2007-05-23 Mohammad Saleem

The precise connection between the theoretical T, CP, CPT asymmetries, in terms of transition probabilities between the filtered neutral meson $B_d$ states and the experimental asymmetries between the double decay rate intensities for…

高能物理 - 唯象学 · 物理学 2016-07-20 Jose Bernabeu , Francisco J. Botella , Miguel Nebot

Flavor mixing and the quark mass spectrum are intimately related. In view of the observed strong hierarchy of the quark and lepton masses and of the flavor mixing angles it is argued that the description of flavor mixing must take this into…

高能物理 - 唯象学 · 物理学 2009-10-31 Harald Fritzsch

A model is presented that fits the quark and lepton masses and mixings wherein five dimensionless parameters and a phase account for fifteen dimensionless observables. Among these are the Wolfenstein parameters $\rho$ and $\eta$, the…

高能物理 - 唯象学 · 物理学 2011-05-12 Carl H. Albright , S. M. Barr

A simple breaking of the subnuclear democracy of the quarks leads to a mixing between the second and the third family, in agrement with observation. Introducing the mixing between the first and the second family, one finds an interesting…

高能物理 - 唯象学 · 物理学 2007-05-23 Harald Fritzsch

We review the experimental status of the angles of the Unitarity Triangle of the CKM matrix, as measured by the BABAR and Belle experiments.

高能物理 - 实验 · 物理学 2019-08-14 Giuseppe Finocchiaro

This report contains the results of the Workshop on the CKM Unitarity Triangle, held at CERN on 13-16 February 2002 to study the determination of the CKM matrix from the available data of K, D, and B physics. This is a coherent document…

Using the binary tetrahedral group $T^{'}$, the three angles and phase of the quark CKM mixing matrix are pursued by symmetry-breaking which involves $T^{'}$-doublet VEVs and the Chen-Mahanthappa CP-violation mechanism. The NMRT$^{'}$M,…

高能物理 - 唯象学 · 物理学 2009-09-24 David A. Eby , Paul H. Frampton , Shinya Matsuzaki

The great progress made recently in the sector of Flavor Physics has enabled to establish CP violation in the B-meson decays. The unitarity triangle derived from the unitarity relation $V_{ub}^* V_{ud} + V_{cb}^* V_{cd} + V_{tb}^* V_{td} =…

高能物理 - 唯象学 · 物理学 2022-10-12 R. Aleksan , L. Oliver , E. Perez

We point out that hints of deviations from unitarity in the first row of the CKM matrix may be explained by the presence of a single vector-like top. We study how the stringent experimental constraints arising from CP Violation in the kaon…

高能物理 - 唯象学 · 物理学 2021-08-04 G. C. Branco , J. T. Penedo , Pedro M. F. Pereira , M. N. Rebelo , J. I. Silva-Marcos

In this manuscript, a general FCNC-free and CP-violating pattern of quark-mass matrices in the 2HDM derived in our previous investigations is revised. This revised pattern is to be diagonalized analytically with no symmetries imposed. The…

高能物理 - 唯象学 · 物理学 2018-09-18 Chilong Lin