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SUMMARY:Quark and Gluon Tagging at the LHC
DTSTART;VALUE=DATE-TIME:20120419T090000Z
DTEND;VALUE=DATE-TIME:20120419T100000Z
DTSTAMP;VALUE=DATE-TIME:20130519T212745Z
UID:indico-event-180595@cern.ch
DESCRIPTION:Distinguishing light-quark jets from gluon jets on an event-by
 -event basis could significantly enhance the reach for many new physics se
 arches at the Large Hadron Collider. Through an exhaustive search of exist
 ing and novel jet substructure observables\, we find that a multivariate a
 pproach can filter out over 95% of the gluon jets while keeping more than 
 half of the light-quark jets. Moreover\, a combination of two simple varia
 bles\, the charge track multiplicity and the p_T-weighted linear radial mo
 ment (girth)\, can achieve similar results. I will discuss applications an
 d address theoretical issues in the definitions of quark and gluon jets.\n
 \nhttp://indico.cern.ch/conferenceDisplay.py?confId=180595
LOCATION:CERN TH common room
URL:http://indico.cern.ch/conferenceDisplay.py?confId=180595
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