Abstract
We calculate the radiative corrections to the nonleptonic inclusive B decay
mode \$bcu d\$ taking into account the charm quark mass.
Compared to the massless case, corrections resulting from a nonvanishing c
quark mass increase the nonleptonic rate by (4--8)\%, depending on the
renormalization point. As a by--product of our calculation, we obtain an
analytic expression for the radiative correction to the semileptonic decay
\$bu\tau\bar\nu\$ taking into account the \$\tau\$ lepton mass, and
estimate the c quark mass effects on the nonleptonic decay mode \$b\rightarrow
cc s\$.
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