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Science and Mathematics

CANCELED: Time resolved detection of jets and application to boosted object tagging

March 30, 2020 at 3:00pm4:00pm EDT

Physics Building, 202/204

This event has already occurred. The information may no longer be valid.

The Department of Physics welcomes Matthew Klimek to campus.

The general purpose detectors at the high luminosity phase of the HLC will contain dedicated timing detectors with the ability to record the arrival time of charged particles with resolution of approximately 30 ps. We argue on general grounds that hadronization imprints a velocity distribution on the individual hadrons within a jet that results in their arrival timing being temporally resolved by these detectors. This will constitute the first direct observation of this consequence of the process of hadronization. We further suggest an application for this data in the context of boosted object tagging. Jets which arise from the decay of highly boosted resonances will exhibit velocity distributions that are boosted relative to QCD jets of similar jet energy. We will demonstrate that a simple cut on the distribution of charged hadron arrival times at the detector can discriminate against QCD jets that would otherwise give a false positive  under a traditional spatial substructure based boosted object tagger.

This event was first published on March 6, 2020 and last updated on March 25, 2020.

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