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

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

2002-03-07

arxiv.org/abs/hep-ph/0203071v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, no figures, uses Revtex4; title changed, typos corrected

Scientific paper

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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