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The D0 Run II Impact Parameter Trigger

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arxiv physics/0701195 v1 pith:IIRYIOBA submitted 2007-01-17 physics.ins-det

The D0 Run II Impact Parameter Trigger

T. Adams , Q. An , K.M. Black , T. Bose , N.J. Buchanan , S. Caron , D. K. Cho , S. Choi
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A. Das M. Das H. Dong W. Earle H. Evans S.N. Fatakia L. Feligioni T. Fitzpatrick E. Hazen U. Heintz K. Herner J.D. Hobbs D. Khatidze W.M. Lee S.L. Linn M. Narain C. Pancake N. Parashar E. Popkov H.B. Prosper G. Redner M. P. Sanders S. Sengupta B. Smart L. Sonnenschein G. Steinbruck W. Taylor S. Ansermet-Tentindo H. D. Wahl T. Wijnen J. Wittlin J. Wu S. X. Wu A. Zabi J. Zhu
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classification physics.ins-det
keywords b--flavoreddecaydetectoreventsparticlestriggeravailablebeen
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Many physics topics to be studied by the D0 experiment during Run II of the Fermilab Tevatron ppbar collider give rise to final states containing b--flavored particles. Examples include Higgs searches, top quark production and decay studies, and full reconstruction of B decays. The sensitivity to such modes has been significantly enhanced by the installation of a silicon based vertex detector as part of the DO detector upgrade for Run II. Interesting events must be identified initially in 100-200 microseconds to be available for later study. This paper describes custom electronics used in the DO trigger system to provide the real--time identification of events having tracks consistent with the decay of b--flavored particles.

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