Perturbative QCD analysis of B→φK* decays
Perturbative QCD analysis of B→φK* decays
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DOI:
10.1103/physrevd.66.054013
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发表时间:
2002-04
影响因子:
5
通讯作者:
C. Chen;Y. Keum;Hsiang-nan Li
中科院分区:
文献类型:
--
作者:
C. Chen;Y. Keum;Hsiang-nan Li
We study the first observed charmless $B\to VV$ modes, the $B\to\phi K^*$ decays, in perturbative QCD formalism. The obtained branching ratios $B(B\to\phi K^*)\sim 15 \times 10^{-6}$ 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.