Online b-jets tagging at CDF

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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-P{sub T} physics program, and the possibility to select online b-jets enriched samples can extend the physics reaches especially for light Higgs boson searches where the H {yields} b{bar b} 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 Silicon Vertex Tracker (SVT), we design an online trigger algorithm aimed at ... continued below

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Casarsa, M.; /Fermilab; Ristori, L.; /INFN, Pisa; Amerio, S.; Lucchesi, D. et al. April 1, 2007.

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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-P{sub T} physics program, and the possibility to select online b-jets enriched samples can extend the physics reaches especially for light Higgs boson searches where the H {yields} b{bar b} 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 Silicon Vertex Tracker (SVT), we design an online trigger algorithm aimed at selecting good purity b-jets samples useful for many physics measurements, the most important being inclusive H {yields} b{bar b} searches. We discuss the performances of the proposed b-tagging algorithm which must guarantee reasonable trigger rates at luminosity greater than 2 x 10{sup 32} cm{sup -2}s{sup -1} and provide high efficiency on H {yields} b{bar b} events.

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  • Presented at 15th IEEE Real Time Conference 2007 (RT 07), Batavia, Illinois, 29 Apr - 4 May 2007.

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  • Report No.: FERMILAB-CONF-07-109-E
  • Grant Number: AC02-07CH11359
  • Office of Scientific & Technical Information Report Number: 909892
  • Archival Resource Key: ark:/67531/metadc887216

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Office of Scientific & Technical Information Technical Reports

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  • April 1, 2007

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  • Sept. 22, 2016, 2:13 a.m.

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  • Dec. 7, 2016, 6:35 p.m.

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Casarsa, M.; /Fermilab; Ristori, L.; /INFN, Pisa; Amerio, S.; Lucchesi, D. et al. Online b-jets tagging at CDF, article, April 1, 2007; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc887216/: accessed October 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.