2016/04/30 by B. Todd Huffman, Charles Jackson, Jeff Tseng · 1 citation
Physics and Astronomy · #hep-ex #hep-ph
paper · pdf · doi:10.1088/0954-3899/43/8/085001
published as J. Phys. G: Nucl. Part. Phys. 43 (2016) 085001 (10pp) · 11 pages, 6 figures
arxiv created 2016/07/01 · arxiv updated 2016/07/04
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.