FAILURE OF LOCAL DUALITY IN INCLUSIVE NONLEPTONIC HEAVY FLAVOR DECAYS

We argue that there is strong experimental evidence in the data of b- and c-decays that the pattern of power suppressed corrections predicte d by the short distance expansion, the heavy quark effective theory an d the assumption of local duality is not correct for the non-leptonic inclusive widths. The data indicate instead the presence of 1/m correc tions that should be absent in the above theoretical framework. These corrections can be simply described by replacing the heavy quark mass by the mass of the decaying hadron in the m(5) factor in front of all the non-leptonic widths.