Giovanni Busetto, Julien Donini, Tommaso Dorigo
(University of Padova and INFN) Mel Shochet
(University of Chicago) Chris Neu
(University of Pennsylvania)
The figure shows the dijet invariant mass of 85,794 events with both jet
containing a secondary vertex b-tag. These events are selected from 333
pb-1 of CDF data collected by a dedicated trigger. The two leading jets
must be back-to-back in azimuth (Delta Phi>3.0), and the event must
have no other jet with Et above 10 GeV.
The background shape (black histogram with grey shading) is computed
using untagged data passing the same kinematic selection; the Z->bb
signal shape (green histogram) is computed with Pythia Monte Carlo.
The two shapes are fit to the experimental data (represented by
blue points with error bars). Fit results are in red; fit uncertainties
are statistical only.
Tommaso Dorigo
Last modified: Tue Feb 22 14:13:50 CST 2005
