Jet calorimetric trigger

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The problem in triggering on jets in hadron colliders is that the largest background in the trigger is also a jet. Therefore, we must strive to trigger as incisively as possible. Since the basic physics resides in the transverse momentum, Pt, of the jet, this means to trigger with as sharp a Pt discriminant as possible. The basic problem is different for electrons or photons, where the backgrounds are typically jets. For heavy quarks, like b, the backgrounds are mismeasured secondary vertices. The situation is similar to that for muons, where the largest background is due to real muons from ... continued below

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97 Kilobytes pages

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Green, Dan September 27, 1999.

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Description

The problem in triggering on jets in hadron colliders is that the largest background in the trigger is also a jet. Therefore, we must strive to trigger as incisively as possible. Since the basic physics resides in the transverse momentum, Pt, of the jet, this means to trigger with as sharp a Pt discriminant as possible. The basic problem is different for electrons or photons, where the backgrounds are typically jets. For heavy quarks, like b, the backgrounds are mismeasured secondary vertices. The situation is similar to that for muons, where the largest background is due to real muons from pion decays in particle cascades or from heavy flavor semi-leptonic decays arising from gluon splitting in ordinary QCD jets. As with jets, the issue for the muon trigger is to make as sharp a Pt cut as possible since the background muons dominate at low Pt.

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97 Kilobytes pages

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  • Other Information: PBD: 27 Sep 1999

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  • Report No.: FERMILAB-TM-2088
  • Grant Number: AC02-76CH03000
  • DOI: 10.2172/11974 | External Link
  • Office of Scientific & Technical Information Report Number: 11974
  • Archival Resource Key: ark:/67531/metadc619445

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • September 27, 1999

Added to The UNT Digital Library

  • June 16, 2015, 7:43 a.m.

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  • April 1, 2016, 4:12 p.m.

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Green, Dan. Jet calorimetric trigger, report, September 27, 1999; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc619445/: accessed December 13, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.