We present a detailed examination of the heavy flavor properties
of jets produced at the Fermilab Tevatron collider. The data set, collected
with the Collider Detector at Fermilab, consists of events with two or more
jets with transverse energy E(t) \geq 15 GeV and pseudo-rapidity |eta| \leq
1.5. The heavy flavor content of the data set is enriched by requiring that
at least one of the jets (lepton-jet) contains a lepton with transverse
momentum larger than 8 GeV/c. Jets containing hadrons with heavy flavor are
selected via the identification of secondary vertices. The parton-level
cross sections predicted by the HERWIG Monte Carlo generator program are
tuned within theoretical and experimental uncertainties to reproduce the
secondary-vertex rates in the data. The tuned simulation provides new
information on the origin of the discrepancy between the bb-bar cross
section measurements at the Tevatron and the next-to-leading order QCD
prediction. We also compare the rate of away-jets (jets recoiling against
the lepton-jet) containing a soft lepton (p(t) \geq 2 GeV/c) in the data to
that in the tuned simulation. We find that this rate is larger than what is
expected for the conventional production and semileptonic decay of pairs of
hadrons with heavy flavor.
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Updated: Tuesday, 2004 May 18 12:43:55 CDT automatically from input from "Carol I. Picciolo"