Abstract
In physical hadronic states arising from Z0 decay into [Formula: see text] in particular, those involving pairs of b-hadrons plus pions, constraints arise as a consequence of G-parity conservation, which involves u, d flavor coherence at a virtual gluon vertex. A result of these constraints is that, in general, the partial width contains a small term proportional to [Formula: see text] in addition to the usual, dominant term proportional to [Formula: see text] from the quark model. Our main point is that this nonperturbative effect can reach the level of a 0.3% correction to the standard number for (Γb/Γh) if there are residual of strong interaction phases in some states of the [Formula: see text] systems with magnitude of order of [Formula: see text][Formula: see text] where k is the relative momentum and R is a characteristic size of the interacting system.
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