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Title: Online b-jets tagging at CDF

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-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.

Authors:
; ; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
909892
Report Number(s):
FERMILAB-CONF-07-109-E
TRN: US0703994
DOE Contract Number:
AC02-07CH11359
Resource Type:
Conference
Resource Relation:
Conference: Presented at 15th IEEE Real Time Conference 2007 (RT 07), Batavia, Illinois, 29 Apr - 4 May 2007.
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; ALGORITHMS; DECAY; DESIGN; EFFICIENCY; FERMILAB COLLIDER DETECTOR; HIGGS BOSONS; LUMINOSITY; PHYSICS; SILICON; JETS

Citation Formats

Casarsa, M., /Fermilab, Ristori, L., /INFN, Pisa, Amerio, S., Lucchesi, D., Pagan Griso, S., /INFN, Padua, Torre, S.T., /Frascati, Cortiana, G., and /Padua U., Astron. Dept. Online b-jets tagging at CDF. United States: N. p., 2007. Web.
Casarsa, M., /Fermilab, Ristori, L., /INFN, Pisa, Amerio, S., Lucchesi, D., Pagan Griso, S., /INFN, Padua, Torre, S.T., /Frascati, Cortiana, G., & /Padua U., Astron. Dept. Online b-jets tagging at CDF. United States.
Casarsa, M., /Fermilab, Ristori, L., /INFN, Pisa, Amerio, S., Lucchesi, D., Pagan Griso, S., /INFN, Padua, Torre, S.T., /Frascati, Cortiana, G., and /Padua U., Astron. Dept. Sun . "Online b-jets tagging at CDF". United States. doi:. https://www.osti.gov/servlets/purl/909892.
@article{osti_909892,
title = {Online b-jets tagging at CDF},
author = {Casarsa, M. and /Fermilab and Ristori, L. and /INFN, Pisa and Amerio, S. and Lucchesi, D. and Pagan Griso, S. and /INFN, Padua and Torre, S.T. and /Frascati and Cortiana, G. and /Padua U., Astron. Dept.},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Apr 01 00:00:00 EDT 2007},
month = {Sun Apr 01 00:00:00 EDT 2007}
}

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