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High Energy


HE Seminar: Jason Gallicchio

Description HE Seminar
Speaker: Jason Gallicchio
Title: Quark/Gluon Tagger in Theory and Data
Host: Chertok
Room: 416

Distinguishing light-quark jets from gluon jets on an event-by-event basis could significantly enhance the reach for many new physics searches at the Large Hadron Collider. Through an exhaustive search of existing and novel jet substructure observables, we find that a combination of two simple variables, the charge track multiplicity and the p_T-weighted linear radial moment (width), can filter out over 85-95% of the gluon jets while keeping more than half of the light-quark jets. I will discuss applications, address theoretical issues in the definitions of quark and gluon jets, and show progress that ATLAS has made in measuring these observables.
Date Tue, October 2, 2012
Time 9:00am-10:00am PDT
Duration 1 hour
Access Public
Created by High-Energy Seminars
Updated Mon, October 1, 2012 11:10am PDT
Send Reminder Yes  -  1 day 8 hour 0 minutes before start

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