Perturbative QCD study on the photonic penguin contributions to the decay $B\to K^* γ$

Details Perturbative QCD study on the photonic penguin contributions to the decay $B\to K^* γ$ Perturbative QCD study on the photonic penguin contributions to the decay $B\to K^* γ$

1996-03-21

arxiv.org/abs/hep-ph/9603367v2

Eur.Phys.J.C4:277-281,1998

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 pages, latex, 2 PostScript figures, more meson wave function models are employed in numerical calculation, the text is revi

Scientific paper

10.1007/s100520050205

Including corrections of order $O(m_{K^*}/m_B)$, we present an analysis of photonic penguin contributions to the decay $B\to K^* \gamma$ in the perturbative QCD framework. Employing several models of the meson wave functions, we demonstrate that the corrections of $O(m_{K^*}/m_B)$ are enhanced and will providesubstantial contributions to the decay because of the B meson wave function being sharply peaked (bound state effect). The numerical predictions for the corrections are about $30%\sim 60%$ which depend on the non-perturbative inputs such as the meson wave functions and the $b$-quark mass.

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