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arXiv · hep-ph/9811274

Nonspectator Effects and B Meson Lifetimes

Kwei-Chou Yang
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Abstract

We review the B meson lifetime problems and nonspectator effects. The predictions of B meson lifetime ratios depend on four unknown hadronic parameters $B_1$, $B_2$, $ε_1$ and $ε_2$, where $B_1$ and $B_2$ parametrize the matrix elements of color singlet-singlet four-quark operators and $ε_1$ and $ε_2$ the matrix elements of color octet-octet operators. To understand contributions of the nonspectator effects to the B meson lifetime ratios, we derive the renormalization-group improved QCD sum rules for these parameters within the framework of heavy quark effective theory.

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Kwei-Chou Yang. 1998-11-09. Nonspectator Effects and B Meson Lifetimes. https://arxiv.org/abs/hep-ph/9811274

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