| Title |
Online b-jets tagging at CDF |
Submitted |
09-FEB-07 17:17 (UTC -06:00) |
| Classification |
Trigger and Data Acquisition |
Modified |
22-MAR-07 17:21 (UTC -05:00) |
| Session |
PS2C |
Presentation |
Poster |
| Presenter |
Giorgio Cortiana |
Paper ID |
PS2C004 |
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Paper PDF |
Download |
| Author(s) |
Giorgio Cortiana (Univ. degli Studi di Padova, Padova), Massimo Casarsa (Fermilab, Batavia, Illinois), Luciano Ristori (INFN Pisa, Pisa), Silvia Amerio, Donatella Lucchesi, Simone Pagan Griso (INFN sezione di Padova, Padova), Stefano Torre (INFN/LNF, Frascati (Roma)) |
| Abstract |
We propose a method to identify b-quark jets at trigger level which exploits recently increased CDF trigger system capabilities. b-quark jets identification is of central interest for the CDF high-pT physics program, and the possibility to online select b-jets enriched samples can extend the physics reach especially for light Higgs boson searches where the H→bbbar decay mode is dominant. Exploiting new trigger primitives provided by two recent trigger upgrades, the Level2 XFT stereo tracking[*] and the improved Level2 cluster-finder[**], in conjunction with the existing SVT tracker, we describe online trigger algorithms aimed at selecting good purity b-jets samples useful for inclusive H→bbbar searches. We discuss the performance of the proposed b-tagging algorithms which, when implemented at trigger level, needed to meet the restrict Level2 timing constraints and to provide high efficiency on H→bbbar Monte Carlo events, while keeping trigger rates at a reasonable level even at high Tevatron luminosities. |
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Word Count: 149 Character Count: 1024 |
| Footnote |
[*] A. Abulencia et al., FERMILAB-CONF-06-280-E.
[**] Level-2 calorimeter Trigger Upgrade ar CDF, L. Sartori et al., IEEE Nuclear Science Symposium Conference Record.
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| Funding Agency |
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