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arXiv · 0911.3322

The Two Roads to "Intrinsic Charm" in B Decays

Ikaros Bigi·Thomas Mannel·Sascha Turczyk·Nikolai Uraltsev
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Abstract

We describe two complementary ways to show the presence of higher order effects in the 1/m_Q expansion for inclusive B decays that have been dubbed "Intrinsic Charm". Apart from the lessons they can teach us about QCD's nonperturbative dynamics their consideration is relevant for precise extractions of |V_{cb}|: for they complement the estimate of the potential impact of 1/m_Q^4 contributions. We draw semiquantitative conclusions for the expected scale of Weak Annihilation in semileptonic B decays, both for its valence and non-valence components.

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Ikaros Bigi, Thomas Mannel, Sascha Turczyk, Nikolai Uraltsev. 2009-11-17. The Two Roads to "Intrinsic Charm" in B Decays. https://doi.org/10.1007/jhep04(2010)073

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