Perturbative QCD analysis of $B\to \varphi K^{\ast }$ decays

Abstract

We study the first observed charmless $B\to VV$ modes, the $B\to \varphi K^{\ast }$ decays, in perturbative QCD formalism. The obtained branching ratios $B(B\to \varphi K^{\ast })\sim 15\times 10^{-6}$ are larger than $\sim 9\times 10^{-6}$ from QCD factorization. The comparison of the predicted magnitudes and phases of the different helicity amplitudes, and branching ratios with experimental data can test the power counting rules, the evaluation of annihilation contributions, and the mechanism of dynamical penguin enhancement in perturbative QCD, respectively.

14 pages, 2 tables, brief disscussion on hard sacle added, version to appear in PRD

References in corpus (10)

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• Leading-power contributions to $B\to \pi ,\rho$ transition form factors
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• Sudakov effects in B -> pi l nu form factors
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• Analysis of $B\to K^{\ast }{\ell }^{+}{\ell }^{-}$ decays at large recoil
• Measurement of the decays B-->phi K and B-->phi K^*
• Understanding the penguin amplitude in $B\to \varphi K$ decays

Cited by in corpus (74)

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• Threshold resummation for nonleptonic B meson decays
• Resolution to the $B\to \varphi K^{\ast }$ polarization puzzle
• Possible Large Direct CP Violations in Charmless B-Decays
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• Vector-pseudoscalar two-meson distribution amplitudes in three-body $B$ meson decays
• PQCD Calculation for ${\Lambda }_b\to \Lambda \gamma$ in the Standard Model
• Nonuniversal $Z^{\prime }$ couplings in B decays
• Implication of the B -> rho rho data on the B -> pi pi puzzle
• Scalar interactions and the polarizations of $B\to \varphi K^{\ast }$
• Study of $K_0^{\ast }(1430)$ and $a_0(980)$ from $B\to K_0^{\ast }(1430)\pi$ and $B\to a_0(980)K$ Decays
• Vector-Tensor and Vector-Vector Decay Amplitude Analysis of B0->phi K*0
• $B\to f_0(980)K$ Decays and Subleading Corrections
• Branching Ratio and CP Asymmetry of $B\to \rho {\eta }^{(\prime )}$ Decays in the Perturbative QCD Approach
• Branching Ratio and CP Asymmetry of $B\to \pi {\eta }^{(\prime )}$ Decays in the Perturbative QCD Approach
• Rare Decays $B^0\to D_s^{(\ast )+}{D}_s^{(\ast )-}$ and $B_s^0\to D^{(\ast )+}{D}^{(\ast )-}$ in Perturbative QCD Approach
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• Study of $B\to K^{\ast }\rho ,K^{\ast }\omega$ Decays with Polarization in Perturbative QCD Approach
• Charmless Hadronic B-Meson Decays
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• Analysis of $B\to K^{\ast }{\ell }^{+}{\ell }^{-}$ decays at large recoil
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• Evidence for two-quark content of $f_0(980)$ in exclusive $b\to c$ decays
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• Polarization, CP Asymmetry and Branching ratios in B \to K^* K^* with Perturbative QCD approach
• Four-body decays $B_{(s)}\to (K\pi {)}_{S/P}(K\pi {)}_{S/P}$ in the perturbative QCD approach
• Branching Ratio and CP Asymmetry of $B^0\to {\eta }^{(\prime )}{\eta }^{(\prime )}$ Decays in the Perturbative QCD Approach
• Expectations on $B\to (K_0^{\ast }(1430),K_2^{\ast }(1430))\varphi$ decays
• Search for $B^0\to K^{\ast 0}\overline{K}{}^{\ast 0}$, $B^0\to K^{\ast 0}{K}^{\ast 0}$ and $B^0\to K^{+}{\pi }^{-}{K}^{\mp }{\pi }^{\pm }$ Decays
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• First observation of the decay $B_s^0\to \varphi {\bar{K}}^{\ast 0}$
• Search for B0->phiK+pi- Decays with Large K+pi- Invariant Mass
• Calculation of BR(${\bar{B}}^0\to {\Lambda }_c^{+}+\bar{p})$ in the PQCD Approach
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• Searching for new physics in the angular distribution of B^0 -> phi K^* decay
• On Transverse-Momentum Dependent Light-Cone Wave Functions of Light Mesons
• Analysis of Supersymmetric Effects on B -> phi K Decays in the PQCD Approach
• Weak phases from topological-amplitude parametrization
• NLO contributions to $B\to K{K}^{\ast }$ Decays in the pQCD approach
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• Study of $B\to D^{\ast \ast }\pi$ decays
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• Complete Analysis on the Short Distance Contribution of $B_s\to {\ell }^{+}{\ell }^{-}\gamma$ in Standard Model
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