Perturbative QCD analysis of [Formula Presented] decays

研究成果: Article

摘要

We study the first observed charmless (Formula presented) modes, the (Formula presented) decays, in perturbative QCD formalism. The obtained branching ratios (Formula presented) are larger than (Formula presented) 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.

原文English
期刊Physical Review D - Particles, Fields, Gravitation and Cosmology
66
發行號5
DOIs
出版狀態Published - 2002 一月 1

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

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