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$1/m_b$ source in inclusive b-hadron decays

Huei-Shih Liao·Hsiang-nan Li
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Abstract

We show that threshold resummation of the end-point logarithms in inclusive $b$-hadron decays leads to a Sudakov factor, which introduces $1/m_b$ power corrections through infrared renormalons. These power corrections are strong enough to account for the observed semileptonic branching ratio, charm yield, and lifetime ratios by breaking the local quark-hadron duality.

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Huei-Shih Liao, Hsiang-nan Li. 2002-03-12. $1/m_b$ source in inclusive b-hadron decays. https://arxiv.org/abs/hep-ph/0203071

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