Updated Analysis of Some Two-Body Charmless B Decays

Abstract

New data from the BaBar, Belle, and CLEO Collaborations on B decays to two-body charmless final states are analyzed, with the following consequences: (1) The penguin amplitude which dominates the decay $B^{+}\to {\pi }^{+}{K}^{\ast 0}$ has a magnitude similar to that dominating $B^{+}\to {\pi }^{+}{K}^0$. (2) The decay $B^{+}\to {\pi }^{+}\eta$, a good candidate for observing direct CP violation, should be detectable at present levels of sensitivity. (3) The decays $B^{+}\to {\eta }^{\prime }{K}^{+}$ and $B^{+}\to \eta K^{\ast +}$ are sufficiently similar in rate to the corresponding decays $B^0\to {\eta }^{\prime }{K}^0$ and $B^0\to \eta K^{\ast 0}$, respectively, that one cannot yet infer the need for ``tree'' amplitudes $t^{\prime }$ contributing to the $B^{+}$ but not the $B^0$ decays. Statistical requirements for observing this and other examples of tree-penguin interference are given. (4) Whereas the $B^{+}\to {\eta }^{\prime }{K}^{+}$ and $B^0\to {\eta }^{\prime }{K}^0$ rates cannot be accounted for by the penguin amplitude $p^{\prime }$ alone but require an additional flavor-singlet penguin contribution $s^{\prime }$, no such flavor-singlet penguin contribution is yet called for in the decays $B^{+}\to \eta K^{\ast +}$ or $B^0\to \eta K^{\ast 0}$. Predictions for the rates for $B^{+}\to {\eta }^{\prime }{K}^{\ast +}$ and $B^0\to {\eta }^{\prime }{K}^{\ast 0}$ are given which would allow one to gauge the importance of these flavor-singlet penguin amplitudes.

19 pages, RevTeX, 1 figure, to be submitted to Phys. Rev. D. Some small revisions made to original version

References in corpus (10)

• QCD Factorization in B -> pi K, pi pi Decays and Extraction of Wolfenstein Parameters
• Measurement of Branching Fractions for B->ππ, Kπand KK Decays
• Observation of $B\to \varphi K$ and $B\to \varphi K^{\ast }$
• Measurement of Branching Fractions and Search for CP-Violating Charge Asymmetries in Charmless Two-Body B Decays into Pions and Kaons
• Measurement of the Branching Fraction for B->eta' K and Search for B->eta'pi+
• Measurements of the branching fractions of exclusive charmless B meson decays with ${\eta }^{p}rime$ or $\omega$ mesons
• Implications of CP Asymmetry Limits for $B\to K\pi$ and $B\to \pi \pi$
• Measurement of the decays B-->phi K and B-->phi K^*
• Search for $B^0\to {\pi }^0{\pi }^0$ Decay
• Information on $B\to \pi \pi$ Provided by the Semileptonic Process $B\to \pi l\nu$

Cited by in corpus (32)

• Flavor-Singlet B-Decay Amplitudes in QCD Factorization
• Charmless $B\to PP$ decays using flavor SU(3) symmetry
• Z' Mediated Flavor Changing Neutral Currents in B Meson Decays
• B, D and K decays
• Charmless $B\to VP$ Decays Using Flavor SU(3) Symmetry
• Low-Mass Baryon-Antibaryon Enhancements in B Decays
• Composition of the Pseudoscalar Eta and Eta' Mesons
• Two-Body Charmless B Decays Involving eta and eta'
• B Meson Decays to eta(')K*, eta(')rho,eta(')pi0, omegapi0, and phipi0
• Flavor SU(3) analysis of charmless B meson decays to two pseudoscalar mesons
• Measurements of Branching Fractions and Time-Dependent CP-Violating Asymmetries in B to eta' K Decays
• Flavor SU(3) symmetry and QCD factorization in $B\to PP$ and $PV$ decays
• Charmless decays B->pipi, piK and KK in broken SU(3)symmetry
• $B\to \eta ({\eta }^{\prime })K(\pi )$ in the Standard Model with Flavor Symmetry
• Measurements of CP-violating Asymmetries and Branching Fractions in B Meson Decays to eta' K
• New Physics Contributions to The B -> phi K_S Decay
• B decays into light scalar particles and glueball
• Observation of B to K_S^0 pi+ pi- and Evidence for B to K*pm pi mp
• Update analysis of two-body charmed $B$ meson decays
• Measurement of charmless $B$ Decays to $\eta K^{\ast }$ and $\eta \rho$
• Observation of $B^{+}\to {\rho }^{+}{K}^0$ and Measurement of its Branching Fraction and Charge Asymmetry
• On the Short Distance Part of the QCD Anomaly Contribution to the b --> s eta' Amplitude
• Helicity conservation and factorization-suppressed charmless B decays
• The gluonic B and J/psi decays into the eta' meson
• Charming penguins in B -> PP decays and the extraction of gamma
• Constraints on the CKM Angle gamma from B -> K*+- pi-+
• Zweig-rule-satisfying inelastic rescattering in B decays to pseudoscalar mesons
• Elastic and inelastic SU(3)-breaking final-state interactions in B decays to pseudoscalar mesons
• Conference Summary (5th Int. Conf. on Hyperons, Charm, and Beauty Hadrons)
• Combining Information from $B\to \pi \pi$ and $B\to \pi \rho ,\pi \omega$ Decays
• $B\to D_s\pi$ and the tree amplitude in $B\to {\pi }^{+}{\pi }^{-}$
• A possible solution of $B$ arrow $\pi \pi$ puzzle in Z' model