The Decay $B\to K^*γ$ from QCD Sum Rules

Patricia Ball

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arXiv · hep-ph/9308244

The Decay $B\to K^*γ$ from QCD Sum Rules

Patricia Ball

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Abstract

Using the QCD sum rules approach and the complete leading--logarithmic short--distance coefficients determining the penguin--amplitude, we obtain $B(B\to K^*γ) = (6.8\pm 2.4)\cdot 10^{-5}$ for top--quark masses in the range (150--200) GeV and $|V_{cb}| = 0.035$ for $τ_B = 1.5\,\text{ps}$. The ratio to the inclusive rate is $B(B\to K^*γ)/B(B\to X_sγ) = (20\pm 6)\% $.

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Patricia Ball. 1993-08-07. The Decay $B\to K^*γ$ from QCD Sum Rules. https://arxiv.org/abs/hep-ph/9308244

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