B-identification for Level 2: The Silicon Track Trigger at D0

Details B-identification for Level 2: The Silicon Track Trigger at D0 B-identification for Level 2: The Silicon Track Trigger at D0

2005-10-12

arxiv.org/abs/physics/0510116v1

Nucl.Phys.Proc.Suppl.156:143-146,2006

Physics

Instrumentation and Detectors

To appear in the proceedings of 10th International Conference on B Physics at Hadron Machines (BEAUTY 2005), Assisi, Perugia,

Scientific paper

10.1016/j.nuclphysbps.2006.03.06

This article describes the Silicon Track Trigger (STT) which has been fully commissioned in 2004 at the DO experiment. The STT allows to enrich already at the second trigger level the data sample with events containing B-mesons. The STT achieves this by providing within about 50 microseconds tracks with an impact parameter resolution of around 50 micrometer. The article shows preliminary results of the trigger performance and presents a fast b-identification algorithm for the second trigger level.

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