What can we learn from $B\to$ $\rho (\omega )K$ decays?

Abstract

We show that in the PQCD approach the $B\to \rho (\omega )K$ decays display not only the dynamical penguin enhancement, the mechanism responsible for the large branching ratios (BRs) of $B\to \varphi K$ decays, but also the importance of annihilation contributions. We find that the CP asymmetries (CPAs) of $B\to {\rho }^{\pm }{K}^{\mp }$, $B^{\mp }\to {\rho }^0(\omega )K^{\mp }$ (class I) are all over 50%.

10 pages, 1 figure, final version to appear in PLB

References in corpus (6)

• QCD Factorization in B -> pi K, pi pi Decays and Extraction of Wolfenstein Parameters
• Perturbative QCD analysis of $B\to \varphi K$ decays and Power counting
• Measurement of Branching Fractions for B->ππ, Kπand KK Decays
• Measurement of Branching Fractions and Search for CP-Violating Charge Asymmetries in Charmless Two-Body B Decays into Pions and Kaons
• Understanding the penguin amplitude in $B\to \varphi K$ decays
• Analysis of $B_s\to KK$ decays in the PQCD

Cited by in corpus (10)

• Evidence for Direct CP Violation from Dalitz-plot analysis of B+/- -> K+/- pi+/- pi-/+
• Penguin-dominated B -> PV decays in NLO perturbative QCD
• Charmless Two-body $B(B_s)\to VP$ decays In Soft-Collinear-Effective-Theory
• Probing New Physics in $B\to K^{(\ast )}{\ell }^{+}{\ell }^{-}$ decays
• $B\to f_0(980)K^{(\ast )}$ decays and final state interactions
• Observation of B+- -> omega K+- Decay
• Improved measurements of branching fractions and CP partial rate asymmetries for $B\to \omega K$ and $B\to \omega \pi$
• Impact of Subleading Corrections on Hadronic B Decays
• What can we learn from $B^{+}\to D_s^{(\ast )-}{K}^{+}{\pi }^{+}$, $B_d\to D_s^{(\ast )-}{K}^0{\pi }^{+}$ and $B_d\to D_s^{(\ast )-}{K}^{\ast +}$ decays?
• PQCD approach to exclusive B decays