A Further Study of $CP$ Asymmetries in Pure Penguin-induced $B_u^{\pm }$ Decays

Abstract

We make a further study of $CP$ asymmetries in the pure penguin-induced decay modes $B_u^{-}\to K^{(\ast )0}+K^{(\ast )-}$ and $B_u^{-}\to {\bar{K}}^{(\ast )0}+({\pi }^{-},{\rho }^{-},a_1^{-})$ by using the two-loop renormalization-group-improved effective Hamiltonian and factorization approximation. Different from the previous results obtained without QCD corrections, the $CP$ asymmetries in each of the two groups are enhanced and classified with their respective factorization coefficients. A sum over the pure penguin modes of each group is proposed to obtain an effective branching ratio and a {\it weighted-mean} signal of $CP$ violation, which should be statistically significant for experimental observation.

12 Latex pages (2 figs.); BIHEP-93-38 (revised)

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)

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• 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