Tagging \(b\) quarks at extreme energies without tracks

We describe a new hit-based \(b\)-tagging technique for high energy jets and study its performance with a Geant4-based simulation. The technique uses the fact that at sufficiently high energy a B meson or baryon can live long enough to traverse the inner layers of pixel detectors such as those in th...

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Bibliographic Details
Published in:arXiv.org 2016-07
Main Authors: Huffman, B Todd, Jackson, Charles, Tseng, Jeff
Format: Article
Language:English
Subjects:
Marking
Pixels
Quarks
Online Access:Get full text
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Summary:We describe a new hit-based \(b\)-tagging technique for high energy jets and study its performance with a Geant4-based simulation. The technique uses the fact that at sufficiently high energy a B meson or baryon can live long enough to traverse the inner layers of pixel detectors such as those in the ATLAS, ALICE, or CMS experiments prior to decay. By first defining a "jet" via the calorimeter, and then counting hits within that jet between pixel layers at increasing radii, we show it is possible to identify jets that contain \(b\)-quarks by detecting a jump in the number of hits. We show that the technique maintains its efficiency at energies beyond the range of conventional \(b\)-taggers.
ISSN:2331-8422
DOI:10.48550/arxiv.1604.05036