At the beginning of 2002 a new data taking with an upgraded
trigger system started for the CDF Collaboration. One of the major
improvements is the track trigger. A fast processor reconstructs tracks in
the central drift chamber and the Silicon Vertex Tracker combines these
tracks with the silicon vertex detector information to have track parameters
with a precision as good as the offline reconstruction. This system allows
CDF to trigger on tracks significantly displaced from the primary vertex
with high efficiency for signal events like charm and beauty and to keep low
background rates. The performances, in terms of resolution and efficiency,
of both the processors are illustrated and the firsts physics results are
discussed.
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Updated: Friday, 2002 October 18 09:33:02 CDT automatically from input from Carol Picciolo