Perturbative QCD analysis of $B \to \phi K^* $ decays

Chuan-Hung Chen; Yong-Yeon Keum; Hsiang-nan Li

doi:10.1103/PhysRevD.66.054013

Perturbative QCD analysis of $B \to \phi K^* $ decays

High Energy Physics - Phenomenology 2009-11-07 v2

Authors: Chuan-Hung Chen , Yong-Yeon Keum , Hsiang-nan Li

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Abstract

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.

Keywords

perturbative QCD B meson decay charmless decay helicity amplitude penguin enhancement QCD factorization

Cite

@article{arxiv.hep-ph/0204166,
  title  = {Perturbative QCD analysis of $B \to \phi K^* $ decays},
  author = {Chuan-Hung Chen and Yong-Yeon Keum and Hsiang-nan Li},
  journal= {arXiv preprint arXiv:hep-ph/0204166},
  year   = {2009}
}

Comments

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

Perturbative QCD analysis of $B \to \phi K^* $ decays

Abstract

Keywords

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