Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aps..aprc14011l&link_type=abstract
American Physical Society, April Meeting, Jointly Sponsored with the High Energy Astrophysics Division (HEAD) of the American As
Astronomy and Astrophysics
Astrophysics
Scientific paper
The Silicon Track Trigger (STT) is a new component of the Level 2 trigger for the D0 experiment. Using the hit information from the Silicon Microstrip Tracker and the tracks found in the Central Fiber Tracker at the 1st trigger level, the STT will reconstruct tracks with better resolution than that available at level 1. The impact parameter will be measured with a resolution of 35 μ m. This will allow D0 to select events with tracks from the decay of long lived particles. Track parameters (p_T, φ and impact parameter) are provided for the level 2 trigger decision within 25 microseconds. The design and implementation of the STT will be discussed.
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