## 摘要

We apply the perturbative QCD factorization theorem developed recently for nonleptonic heavy meson decays to the radiative decay B→K* γ. In this formalism the evolution of the Wilson coefficients from the W boson mass down to the characteristic scale of the decay process is governed by the effective weak Hamiltonian. The evolution from the characteristic scale to a lower hadronic scale is formulated by the Sudakov resummation. In addition to computing the dominant contribution arising from the magnetic-penguin operator O_{7}, we also calculate the contributions of four-quark operators. By fitting our prediction for the branching ratio of the B→K* γ decay to the CLEO data, we determine the B meson wave function that possesses a sharp peak at a low momentum fraction.

原文 | English |
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頁（從 - 到） | 1-10 |

頁數 | 10 |

期刊 | Physical Review D - Particles, Fields, Gravitation and Cosmology |

卷 | 60 |

發行號 | 5 |

DOIs | |

出版狀態 | Published - 1 九月 1999 |