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We present the current wisdom regarding the measurement of the CP-violating phases of the CKM unitarity triangle in $B$-meson decays. After an introduction to the SM picture of CP violation, we review direct and indirect CP violation, the…

High Energy Physics - Phenomenology · Physics 2007-05-23 Oscar F. Hernandez , David London

A clean determination of the angle $\alpha$ of the unitary triangle from $B\to \pi\pi$ decays requires an isospin analysis. If the $B \to \pi^0\pi^0$ and $\bar B \to \pi^0\pi^0$ decay rates are small it may be hard to carry out this…

High Energy Physics - Phenomenology · Physics 2010-11-23 Yuval Grossman , Helen R. Quinn

The decays B_{d,s}^0 --> K^{(*)} K-bar^{(*)} can be used to measure the angle alpha of the CKM unitarity triangle. The theoretical error from SU(3) breaking is expected to be small, so that the determination of alpha is clean. Moreover,…

High Energy Physics - Phenomenology · Physics 2010-11-23 Alakabha Datta , David London

In this short review presented at FPCP04, Daegu, Korea, we discuss methods leading to determinations of alpha and gamma with practically no theoretical error. The remaining theoretical errors due to isospin breaking, neglecting of…

High Energy Physics - Phenomenology · Physics 2007-05-23 Jure Zupan

We present a method of obtaining the entire unitarity triangle from measurements of B -> pi K decay rates alone. Electroweak penguin amplitudes are included, and are related to tree operators. Discrete ambiguities are removed by comparing…

High Energy Physics - Phenomenology · Physics 2009-11-10 Maxime Imbeault , Veronique Page , Alexandre St-Laurent Lemerle , David London

The unitarity of the Cabibbo-Kobayashi-Maskawa (CKM) matrix has been well established by both direct and indirect measurements without any evidence of discrepancy. The CKM weak phase $\alpha$ is directly measured using an isospin analysis…

High Energy Physics - Phenomenology · Physics 2020-04-15 Abinash Kumar Nayak , Rahul Sinha , Anirban Karan , Benjamin Grinstein

This talk contains a short overview of the history of the interplay of the weak and the strong interaction and CP-violation. It describes the phenomenology and the basic physics mechanisms involved in the Standard Model calculations of…

High Energy Physics - Phenomenology · Physics 2017-08-23 Johan Bijnens

The time-dependent angular distributions of certain $B_{d,s}$ decays into final states that are admixtures of CP-even and CP-odd configurations provide valuable information about CKM phases and hadronic parameters. We present the general…

High Energy Physics - Phenomenology · Physics 2016-08-25 Robert Fleischer

We present a new technique to extract information on the Unitarity Triangle from the study of B -> K pi pi Dalitz plots. Using the sensitivity of Dalitz analyses to the absolute values and the phases of decay amplitudes and isospin…

High Energy Physics - Phenomenology · Physics 2007-05-23 M. Ciuchini , M. Pierini , L. Silvestrini

A general parametrization of the $B^+\to\pi^+ K^0$ and $B_d^0\to\pi^- K^+$ decay amplitudes is presented. It relies only on the isospin symmetry of strong interactions and the phase structure of the Standard Model and involves no…

High Energy Physics - Phenomenology · Physics 2010-11-23 Robert Fleischer

We present results of a unitary triangle fit based on the scan method. This frequentist approach employs Gaussian uncertainties for experimental quantities, but makes no arbitrary assumptions about the distribution of theoretical errors.…

High Energy Physics - Experiment · Physics 2015-06-12 Gerald Eigen , Gregory Dubois-Felsmann , David G. Hitlin , Frank C. Porter

I provide a simple derivation of the Buchalla-Safir bound on gamma. I generalize it to the case where an upper bound on the phase of the penguin pollution is assumed. I apply the Buchalla-Safir bound, and its generalization, to the recent…

High Energy Physics - Phenomenology · Physics 2009-11-10 L. Lavoura

We present a preliminary measurement of the angle phi1 of the CKM Unitarity Triangle using time-dependent analysis of D -> Ks pi+ pi- decays produced in neutral B meson decay to a neutral D meson and a light meson (B -> D h). The method…

High Energy Physics - Experiment · Physics 2019-08-14 K. Abe

The high precision to which the standard model has been confirmed implies that new physics effects have to be small in the observed processes. Together with the outstanding precision expected from present and future collider experiments…

High Energy Physics - Phenomenology · Physics 2012-12-20 Martin Jung

We present a review of the measurements of the CKM angle beta (phi_1) by the BaBar and Belle experiments at the asymmetric-energy e+e- B Factories PEP-II and KEKB. The angle beta (phi_1) is measured by time-dependent CP analyses of neutral…

High Energy Physics - Experiment · Physics 2008-11-26 Chih-hsiang Cheng

Using the most recent determinations of several theoretical and experimental parameters, we update the Unitarity Triangle analysis in the Standard Model. The basic experimental constraints come from the measurements of epsilon_k, Vub/Vcb…

High Energy Physics - Phenomenology · Physics 2007-05-23 UTfit Collaboration , M. Bona , M. Ciuchini , E. Franco , V. Lubicz , G. Martinelli , F. Parodi , M. Pierini , P. Roudeau , C. Schiavi , L. Silvestrini , A. Stocchi

Electroweak penguin operators become important when $m_t \approx 174$ GeV. We discuss their implications for measuring CP violating phases $\alpha$, $\beta$ and $\gamma$.

High Energy Physics - Phenomenology · Physics 2016-09-01 N. G. Deshpande , Xiao-Gang He

We re-examine a recent proposal for obtaining \beta using the measurements of the b -> d penguin decays B_d(t) -> K^0 \kbar and B_s(t) -> \phi K_S, along with a theoretical assumption. We show that there are in fact three assumptions one…

High Energy Physics - Phenomenology · Physics 2014-11-17 Alakabha Datta , C. S. Kim , David London

Recent results from BaBar and Belle experiments on $B \bar B$ mixing and $\sin 2\phi_1$ are presented. Accuracy of $\Delta m_d$ measurements has reached 1.2%. Higher order effects within the Standard Model or possible new physics effect…

High Energy Physics - Experiment · Physics 2010-11-23 Kazuo Abe

The precision of the CP phases $2\beta$ and $2\beta_s$ determined from the mixing-induced CP asymmetries in $B_d\to J/\psi K_S$ and $B_s\to J/\psi \phi$, respectively, is limited by the unknown long-distance contribution of a penguin…

High Energy Physics - Phenomenology · Physics 2015-08-12 Philipp Frings , Ulrich Nierste , Martin Wiebusch