On the short distance nonperturbative corrections in heavy quark expansion

Details On the short distance nonperturbative corrections in heavy quark expansion On the short distance nonperturbative corrections in heavy quark expansion

2000-09-10

arxiv.org/abs/hep-ph/0009109v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

Talk given at Latttice 2000, Aug. 17 - 22, 2000, Bangalore, India

Scientific paper

We estimate the renormalon corrections to the inclusive decay rate of heavy hadrons. We assume the gluon mass term $\lambda^2 \gg `^2$ to imitate the short distance nonperturbative effects. It is found that the the inclusive decay rates are corrected by an amount of about 0.2 $\Gamma_0$ for $B$ meson and 0.21 $\Gamma_0$ for baryon. This is significant in view of the discrepancy of lifetimes of $B$ and $\lbb$.

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