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Related papers: CP and charge asymmetries at CDF

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We report a measurement of the decay B0 --> rho0 pi0, using 386 x 10^6 BB-bar pairs collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. We detect 51^{+14}_{-13} signal events with a…

High Energy Physics - Experiment · Physics 2012-08-27 The Belle Collaboration

We present measurements of the branching fractions and charge asymmetries of B decays to all D(*)D(*) modes. Using 232 million BBbar pairs recorded on the Upsilon(4S) resonance by the BaBar detector at the e+e- asymmetric B factory PEP-II…

High Energy Physics - Experiment · Physics 2010-03-19 The BABAR Collaboration , B. Aubert

The LHCb and CDF collaborations reported a surprisingly large difference between the direct CP asymmetries, Delta A_CP, in the D0 -> K+ K- and D0 -> pi+ pi- decay modes. We show that this measurement can be plausibly explained within the…

High Energy Physics - Phenomenology · Physics 2013-02-15 Joachim Brod

Within the Standard Model, CP rate asymmetries for $B\to K^-\pi^{+,0}$ could reach 10%. With strong final state phases, they could go up to 20--30%, even for $\bar K^0\pi^-$ mode which would have opposite sign. We can account for…

High Energy Physics - Phenomenology · Physics 2009-10-31 Xiao-Gang He , Wei-Shu Hou , Kwei-Chou Yang

I report on a measurement of \CP-violating asymmetries ($A_{\Gamma}$) between effective lifetimes of $D^0$ or $\bar{D}^0$ in fully reconstructed $D^0\to K^+ K^-$ and $D^0\to \pi^+\pi^-$ decays collected in $p\bar{p}$ collisions by the…

High Energy Physics - Experiment · Physics 2014-11-04 Sabato Leo

The branching ratio and direct CP asymmetry of the decay mode $B_s \to \phi \pi^0$ have been calculated within the QCD factorization approach in both the standard model (SM) and the non-universal $Z^\prime$ model. In the standard model, the…

High Energy Physics - Phenomenology · Physics 2014-11-20 Juan Hua , C. s Kim , Ying Li

We present preliminary measurements of branching fractions and CP-asymmetry parameters in two- and three-body charmless hadronic B decays. The available data sample consists of 227 million Upsilon(4S) B decays collected with the BABAR…

High Energy Physics - Experiment · Physics 2017-08-23 Markus Cristinziani

We present a measurement of time-dependent CP asymmetries and an updated determination of the CP-odd fraction in the decay B^0 --> D^{*+}D^{*-}. The measurements are derived from a data sample of 88 times 10^{6} B bar{B} pairs collected by…

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

We present measurements of the branching fraction, the polarization parameters and CP-violating asymmetries in B0 -> D*+ D*- decays using a 140/fb data sample collected at the Upsilon(4S) resonance with the Belle detector at the KEKB…

High Energy Physics - Experiment · Physics 2019-08-14 H. Miyake , M. Hazumi

We present a study of three B0 decay modes useful for time-dependent CP asymmetry measurements. From a sample of 9.7 million B meson pairs collected with the CLEO detector, we have reconstructed B0 -> J/psi K0S, B0 -> chi_c1 K0S, and B0 ->…

High Energy Physics - Experiment · Physics 2010-04-08 P. Avery

We present an overview of a few recent results related to CP-violation from the Tevatron. First, we discuss a measurement of the dimuon charge asymmetry from D{\O}that extracts the CP-violation parameter of $\Bo$ mixing and decay. This is…

High Energy Physics - Experiment · Physics 2008-11-26 E. Ben-Haim

We present measurements of branching fractions and CP-violating asymmetries in B0 -> rho+- pi-+ and B0 -> rho- K+ decays. The results are obtained from a data sample of 88.9 10^6 Upsilon(4S) -> B Bbar decays collected with the BABAR…

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

The decay $B^0 \to K^0 \pi^0$, dominated by a $b \to s$ penguin amplitude, holds the potential for exhibiting new physics in this amplitude. In the pure QCD penguin limit one expects $\ckp = 0$ and $\skp = \sin 2 \beta$ for the coefficients…

High Energy Physics - Phenomenology · Physics 2008-11-26 Michael Gronau , Jonathan L. Rosner

Recently, the LHCb and CDF collaborations reported a surprisingly large difference between the direct CP asymmetries, Delta A_CP, in the D0 -> K+ K- and D0 -> pi+ pi- decay modes. An interesting question is whether this measurement can be…

High Energy Physics - Phenomenology · Physics 2012-05-31 Joachim Brod

With the first evidence of direct CP violation in $D^0 \to K^+K^-/\pi^+\pi^-$ there is a strong reason to probe CP asymmetries in charm baryons in three-body final states $\Lambda_c \to p\pi^+\pi^-/pK^+K^-$ & $\Lambda_c \to pK^+\pi^-$ with…

High Energy Physics - Phenomenology · Physics 2012-06-21 I. I. Bigi

We report the first observation of the decay modes $B^0 \to D^+ D^-$, $B^- \to D^0 D^-$ and $B^- \to D^0 D^{*-}$ based on 152 $\times$ 10$^6$ $B\bar{B}$ events collected at KEKB. The branching fractions of $B^0 \to D^+ D^-$, $B^- \to D^0…

High Energy Physics - Experiment · Physics 2019-08-14 G. Majumder

We present measurements of the branching fraction and time-dependent CP asymmetries in B0->J/Psi pi0 decays based on (231.8 +/- 2.6)*10^6 Upsilon(4S) -> BBbar decays collected with the BaBar detector at the PEP-II asymmetric-energy B…

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

We present a summary of the latest measurements of branching fractions and direct CP violations in the charmless hadronic two-body B decays B -> K^+ pi^-, K^+ pi^0, K^0 pi^+ and K^0 pi^0, performed by the Belle, BABAR, CDF and CLEO…

High Energy Physics - Experiment · Physics 2011-01-05 Yuuji Unno

Since the discovery of CP violation more than 5 decades ago, this phenomenon is still attracting a lot of interest. Among the many fascinating aspects of this subject, this review is dedicated to direct CP violation in non-leptonic decays.…

High Energy Physics - Experiment · Physics 2020-09-16 Ignacio Bediaga , Carla Göbel

In this work, within the QCD factorization approach, we investigate the branching fractions and CP asymmetries of decays $B \to K_0^*(1430)\rho$ and $B \to K_0^*(1430)\phi$ under two different scenarios both in the standard model and the…

High Energy Physics - Phenomenology · Physics 2012-06-20 Ying Li , En-Lei Wang