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Related papers: Towards more precise determinations of the CKM pha…

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We present a measurement of time-dependent CP-violating asymmetries in fully reconstructed $B^0->D^{(*)\pm}\pi^\mp$ decays in a data sample of approximately 88 million $Y(4S)\to B\bar{B}$ decays collected with the BaBar detector at the…

High Energy Physics - Experiment · Physics 2007-05-23 The BABAR Collaboration , B. Aubert

Quantum coherence plays a crucial role in the dynamics of neutral meson systems, aiding in the extraction of various Standard Model parameters. However, real physical systems always interact with their surroundings, which causes…

High Energy Physics - Phenomenology · Physics 2025-11-18 Dhiren Panda , Manas Kumar Mohapatra , Rukmani Mohanta

A large number of new experimental data on $B$ decay into two light pesudoscalar ($P$) mesons have been collected by the LHCb collaboration. Besides confirming information on $B_{u,d} \to PP$ decays obtained earlier by B-factories at KEK…

High Energy Physics - Phenomenology · Physics 2016-06-08 Yu-Kuo Hsiao , Chia-Feng Chang , Xiao-Gang He

Results by the BaBar and Belle experiments of the measurements $\sin 2\alpha$, $\sin 2\beta$ and $\sin (2\beta + \gamma)$ along with the CKM matrix elements $V_{cb}$ and $V_{ub}$ are presented. The BaBar and Belle experiments $b \to…

High Energy Physics - Experiment · Physics 2010-11-23 E. O. Olaiya

Recent time-dependent CP asymmetry measurements in the $B_d \to J/\psi K_S$ channel by the BaBar and Belle Collaborations yield somewhat lower values of $\sin 2\beta$ compared to the one obtained from the standard model fit. If the…

High Energy Physics - Phenomenology · Physics 2014-11-17 Gautam Bhattacharyya , Amitava Datta , Anirban Kundu

We present a preliminary measurement of the time-dependent CP asymmetries in decays of neutral B mesons to the final states D*pi using approximately 82 million BBbar events collected by the BaBar experiment at the PEPII storage ring. Events…

High Energy Physics - Experiment · Physics 2007-05-23 The BABAR Collaboration , B. Aubert

We consider sparticle contributions to time dependent CP asymmetry in B -> phi K_S. As for the gluino-squark loop, LR or RL insertion is more likely to give recently observed S_{phi K} < 0 than LL or RR insertion. Neutral Higgs contribution…

High Energy Physics - Phenomenology · Physics 2011-03-23 Jae-hyeon Park

The measurement of $\sin {2\beta}$ from $B_d \to J/\psi K_s$ does not resolve the discrete ambiguities in the angle $\beta$. A measurement of $\cos {2\beta}$ is therefore desirable.This talk is about measuring the CKM angle $\beta(\phi_1)$…

High Energy Physics - Phenomenology · Physics 2007-05-23 Alakabha Datta

We present a preliminary measurement of time-dependent CP-violating asymmetries in B^0-->J/psi K_S and B^0-->psi(2S) K_S decays recorded by the BABAR detector at the PEP-II asymmetric B Factory at SLAC. The data sample consists of 9.0 fb-1…

High Energy Physics - Experiment · Physics 2007-05-23 David G. Hitlin

The recent LHCb measurements of the $B_s \to K^-\pi^+$ and $B_s \to K^+K^-$ rates and CP asymmetries are in agreement with U-spin expectations from $B_d \to K^+\pi^-$ and $B_d \to \pi^+\pi^-$ results. We derive the complete set of isospin,…

High Energy Physics - Phenomenology · Physics 2015-06-16 Yuval Grossman , Zoltan Ligeti , Dean J. Robinson

Isospin analysis has been used to constrain the CP-asymmetries in B -> pi pi decays. In particular correlation between a weak phase \theta and a strong phase \delta is obtained. Further using the experimental values for the CP-average…

High Energy Physics - Phenomenology · Physics 2007-05-23 Fayyazuddin

We comment on the implications of the recently measured CP asymmetry in B --> Phi K_S decay. The data disfavor the Standard Model at 2.7 sigma and -if the trend persists in the future with higher statistics - require the existence of CP…

High Energy Physics - Phenomenology · Physics 2009-11-07 Gudrun Hiller

In this talk, we address the possibility of finding supersymmetry through indirect searches in the K and B systems. We prove that, in the absence of the Cabibbo-Kobayashi-Maskawa phase, a general Minimal Supersymmetric Standard Model with…

High Energy Physics - Phenomenology · Physics 2014-11-17 A. Masiero , O. Vives

We present a measurement of time-dependent CP-violating asymmetries in neutral B meson decays collected with the BABAR detector at the PEP-II asymmetric-energy B Factory at the Stanford Linear Accelerator Center. The data sample consists of…

High Energy Physics - Experiment · Physics 2008-11-26 B. Aubert

We show that both the weak phase \beta and the strong phase \delta_d can be determined from the time-dependent measurement of B_d -> D^{*\pm} D^{\mp} decays, whose final states are non-CP eigenstates. It is also possible to extract \beta…

High Energy Physics - Phenomenology · Physics 2007-05-23 Zhi-zhong Xing

The D0 Collaboration reported a 3.2sigma deviation from the standard model prediction in the like-sign dimuon asymmetry. Assuming that new physics contributes only to B_{d,s} mixing, we show that the data can be analyzed without using the…

High Energy Physics - Phenomenology · Physics 2014-11-21 Zoltan Ligeti , Michele Papucci , Gilad Perez , Jure Zupan

A supersymmetric extension of the Standard Model, with maximal s_R-b_R mixing and a new source of CP violation, contains all the necessary ingredients to account for a possible anomaly in the measured CP asymmetry in B->phi K_s decay. In…

High Energy Physics - Phenomenology · Physics 2011-01-27 Wei-Shu Hou , Makiko Nagashima , Andrea Soddu

To observe CP-violating asymmetries through the interference of a weaker amplitude with a stronger one in $\bo \to D^{(*)} \pi$ and $\ob \to D^{(*)} \pi$ decays, one must collect enough events that the intensity associated with the weaker…

High Energy Physics - Phenomenology · Physics 2014-11-17 Denis Suprun , Cheng-Wei Chiang , Jonathan L. Rosner

We describe a new method for extracting weak, CP-violating phase information, with no hadronic uncertainties, from an angular analysis of B -> V_1 V_2 decays, where V_1 and V_2 are vector mesons. The quantity $\sin^2 (2 \phi_1 + \phi_3)$…

High Energy Physics - Phenomenology · Physics 2016-11-23 D. London , N. Sinha , R. Sinha

The CP asymmetry in the $B \to K_S K_S K_S$ decay is being measured by the two B factories. A large deviation of the CP asymmetry $S_{K_S K_S K_S}$ from $-S_{\psi K_S}$ and/or of $C_{K_S K_S K_S}$ from zero would imply new physics in $b \to…

High Energy Physics - Phenomenology · Physics 2009-11-11 Guy Engelhard , Yosef Nir , Guy Raz
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