On Measuring $CP$ Violation in Neutral $B$-meson Decays at the ${\rm Y}(4S)$ Resonance

Abstract

Within the standard model we carry out an analysis of $CP$-violating observables in neutral $B$-meson decays at the ${\rm Y}(4S)$ resonance. Both time-dependent and time-integrated $CP$ asymmetries are calculated, without special approximations, to meet various possible measurements at symmetric and asymmetric $e^{+}{e}^{-}$ $B$ factories. We show two ways to distinguish between direct and indirect $CP$-violating effects in the $CP$-eigenstate channels such as $B_d^0/{\bar{B}}_d^0\to {\pi }^{+}{\pi }^{-}$ and ${\pi }^0{K}_S$. Reliable knowledge of the Cabibbo-Kobayashi-Maskawa phase and angles can in principle be extracted from measurements of some non-$CP$-eigenstate channels, e.g. $B_d^0/{\bar{B}}_d^0\to D^{\pm }{\pi }^{\mp }$ and $\stackrel{(-)}{D}$${}^{(\ast )0}{K}_S$, even in the presence of significant final-state interactions.

Latex file 13 pages, CERN-TH.7194/94 and PVAMU-HEP-94-2 (Phys. Lett. B328 (1994) 477). (A few minor typing errors have been corrected.)

References in corpus (3)

• Identification of Neutral B Mesons Using Correlated Hadrons
• Framework for Identification of Neutral B Mesons
• Effects of Possible $\Delta B=-\Delta Q$ Transitions in Neutral $B$ Meson Decays}

Cited by in corpus (10)

• Measuring CP Violation and Testing Factorization in B_d \to D^*\pmD^\mp and B_s \to D^*\pm_sD^\mp_s Decays
• Rephase-Invariant CP-Violating Observables and Mixings in the $B^0$, $D^0$, $K^0$ Systems.
• Time Dependence of Coherent $P^0{\bar{P}}^0$ Decays and CP Violation at Asymmetric $B$ Factories
• Penguin corrections and strong phases in a time-dependent analysis of $B_d^0\to {\pi }^{+}{\pi }^{-}$
• A Simplified Approach to Determine $\alpha$ and the Penguin Amplitude in $B_d\to \pi \pi$
• Possible Effects of $D^0-{\bar{D}}^0$ Mixing in Weak $B$ Decays
• An Isospin Analysis of $CP$ Violation in $B_d\to D\pi$, $D^{\ast }\pi$ and $D\rho$
• Isolating the Penguin-diagram Contribution to $CP$ Violation in $B_d^0$ vs ${\bar{B}}_d^0\to {\pi }^{+}{\pi }^{-}$
• Remarks on the Quark-diagram Description of Two-body Nonleptonic B-meson Decays
• Measurables of $CP$ Violation in $B_d\to D_{CP}^0{K}_S$ at a $B$-meson Factory