The Collider Detector at Fermilab collected a unique sample of jets originating from bottom-quark
fragmentation (b-jets) by selecting online proton-antiproton collisions
with a vertex displaced from the ppbar interaction point, consistent with the decay of a bottom-quark hadron.
This data set, collected at a center-of-mass energy of 1.96 TeV, and corresponding to an integrated luminosity of 5.4 fb^−1,
is used to measure the Z-boson production cross section times branching ratio into bbar.
High energy physics; Particle physics; Collider physics