Understanding the penguin amplitude in $B\to \varphi K$ decays

Abstract

We calculate branching ratios for pure penguin decay modes, $B\to \varphi K$ decays using perturbative QCD approach. Our results of branching ratios are consistent with the experimental data and larger than those obtained from the naive factorization assumption and the QCD-improved factorization approach. This is due to a dynamical penguin enhancement in perturbative QCD approach.

7 pages, 2 figures, version to appear in PLB

References in corpus (2)

• Observation of $B\to \varphi K$ and $B\to \varphi K^{\ast }$
• Analysis of B-> ϕK Decays in QCD Factorization

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