Abstract |
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We report on the inclusive branching fractions of B- and
of B0bar mesons decaying to
D0 X, Dbar0 X, D+ X, D- X,
Ds+ X, Ds- X, Lambdac+ X, Lambdabarc- X,
based on a sample of 88.9 million BBbar events
recorded with the BABAR detector
at the Upsilon(4S) resonance.
Events are selected by completely reconstructing one $B$
and searching for a
reconstructed charmed particle in the rest of the event.
We measure the number of charmed and of anti-charmed
particles per B decay and
derive the total charm yield per B- decay,
n_c- = 1.313 +/- 0.037 +/- 0.062 {+0.063}{-0.042},
and per Bbar0 decay,
n_c0 = 1.276 +/- 0.062 +/- 0.058 {+0.066}{-0.046}
where the first uncertainty is statistical,
the second is systematic, and the third reflects the charm
branching-fraction
uncertainties.
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