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After the recent high precision determinations of $V_{us}$ and $V_{ud}$, the first row of the CKM matrix shows more than $4\sigma$ deviation from unitarity. Two possible scenarios beyond the Standard Model can be investigated in order to…

High Energy Physics - Phenomenology · Physics 2020-03-18 Benedetta Belfatto , Revaz Beradze , Zurab Berezhiani

In this letter, we present a geometric representation of the CP phases $\delta_{\rm PDG}$ and $\delta_{\rm KM}$ in the PDG and Kobayashi--Maskawa parameterizations of the flavor mixing matrix in the complex plane. The sum rule with the…

High Energy Physics - Phenomenology · Physics 2025-12-09 Masaki J. S. Yang

We investigate the relation between Cartan decompositions of the unitary group and discrete quantum symmetries. To every Cartan decomposition there corresponds a quantum symmetry which is the identity when applied twice. As an application,…

Quantum Physics · Physics 2007-05-23 Domenico D'Alessandro , Francesca Albertini

In this talk I review the current status of the CKM matrix. A special emphasis is also given to several discrepancies between experiments and the standard model at the level of about three standard deviations. Recent results that appeared…

High Energy Physics - Phenomenology · Physics 2011-08-08 Alexander Lenz

In this work, the postulation that weak CP phase originates in a certain geometry, is further discussed. According to this postulation, the weak CP phase is determined by three mixing angles. So, if we can determine experimentally three…

High Energy Physics - Phenomenology · Physics 2007-05-23 Yong Liu

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…

High Energy Physics - Phenomenology · Physics 2007-05-23 Andrzej J. Buras

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…

High Energy Physics - Phenomenology · Physics 2007-05-23 Ahmed Ali , David London

We consider families of random non-unitary contraction operators defined as deformations of CMV matrices which appear naturally in the study of random quantum walks on trees or lattices. We establish several deterministic and almost sure…

Mathematical Physics · Physics 2023-07-19 Eman Hamza , Alain Joye

After a brief look at CP violation in kaon decays, a short overview of CP violation in the $B$-meson system and of strategies to determine the angles of the unitarity triangles of the CKM matrix is given. Both general aspects and some…

High Energy Physics - Phenomenology · Physics 2011-03-23 Robert Fleischer

We present constraints on the angle gamma of the Unitarity Triangle with a Dalitz analysis of neutral D decays to K_Spi^+pi^- from the processes B^0 -> barD^0 K^*0 (barB^0 -> D^0 barK^*0) and B0 -> D0 K*0 (barB^0 -> barD^0 barK^*0) with…

High Energy Physics - Experiment · Physics 2010-04-12 The BABAR Collaboration , B. Aubert

Rephasing invariant formalism for the $K^0-\bar K^0$ system is recommended for the Particle Data Group. This formalism is accurate and prevents possible errors in generalizing the formalism to other systems, as well as in using CKM matrices…

High Energy Physics - Phenomenology · Physics 2014-11-17 Dan-Di Wu

A complete review of the Cabibbo-Kobayashi-Maskawa (CKM) matrix elements and of the experimental methods for their determination is presented. A critical analysis of the relevant experimental results, and in particular of the most recent…

The aim of the paper is to propose a new type of fits in terms of invariant quantities for finding the entries of the CKM matrix from the quark sector, by using the mathematical solution to the reconstruction problem of 3 x 3 unitary…

High Energy Physics - Phenomenology · Physics 2007-06-26 Petre Dita

Fleischer and Mannel (FM) have shown that it may become possible to constrain the angle $\gamma$ of the unitarity triangle from measurements of various $B\to\pi K$ decays. This constraint is independent of hadronic uncertainties to the few…

High Energy Physics - Phenomenology · Physics 2009-10-30 Yuval Grossman , Yosef Nir , Stephane Plaszczynski , Marie-Helene Schune

The CKM matrix elements $V_{td}$, $V_{ts}$ and $V_{tb}$, while notoriously hard to measure directly in experiment, can be determined to great precision within the Standard Model (SM) with a minimal set of observables due to unitarity of…

High Energy Physics - Phenomenology · Physics 2015-03-17 J. Rohrwild

A review of the current status of the Cabibbo-Kobayashi-Maskawa matrix (CKM) is presented. This paper is an update of the results published in [1]. The experimental constraints imposed by the measurements of \epsilon_K, V_{ub}/V_{cb},…

High Energy Physics - Experiment · Physics 2010-11-23 F. Parodi , P. Roudeau , A. Stocchi

In anticipation for intensive experimental effort on B physics, theorists have introduced many ingenious ways to measure properties of the unitarity triangle. We review some of these methods. We will be critical in the hope that, if there…

High Energy Physics - Phenomenology · Physics 2007-05-23 A. I. Sanda , Zhi-zhong Xing

Assuming that the Kobayashi-Maskawa mechanism gives the dominant contribution to CP violation at low energies, we propose a novel way of testing the flavour sector of the Standard Model which has the potencial for discovering New Physics.…

High Energy Physics - Phenomenology · Physics 2009-11-07 F. J. Botella , G. C. Branco , M. Nebot , M. N. Rebelo

The decays $B_d\to\pi^\mp K^\pm$ and $B^\pm\to\pi^\pm K$ provide interesting constraints on the angle $\gamma$ of the unitarity triangle of the CKM matrix. It is shown that bounds on $\gamma$ can also be obtained from the time evolution of…

High Energy Physics - Phenomenology · Physics 2014-11-17 Robert Fleischer

We analyze the two loop renormalization group equations in the standard model and its extensions for the coupling constants and the quark Yukawa couplings. The key point of our analysis is the observed hierarchy of the quark masses and the…

High Energy Physics - Phenomenology · Physics 2008-11-26 P. Kielanowski , S. R. Juárez W. , J. G. Mora H.