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SUMMARY:Jet substructure and top-taggers for highly boosted tops - Mrinal 
 Dasgupta (Manchester)
DTSTART:20200305T160000Z
DTEND:20200305T170000Z
UID:TALK133072@talks.cam.ac.uk
CONTACT:Mathieu Pellen
DESCRIPTION:We study\, from the viewpoint of QCD\, top taggers that exploi
 t jet substructure for identifying highly boosted top quarks. To understan
 d the problem we take the example of the CMS top tagger\, one of the  earl
 y standard methods introduced and used in experimental studies. We find th
 at the tagger is IRC unsafe and modify it to make it amenable to our QCD s
 tudies while retaining the  performance (signal significance) of the origi
 nal CMS tagger. We then study the main factors that influence the performa
 nce of top taggers for high p_t top jets including the effects of radiatio
 n constraints imposed by the taggers on the signal and the QCD background\
 , introduce new methods for top tagging\, and highlight some directions fo
 r future studies.\n\nThe slides of the presentation can be found "here":ht
 tp://www.hep.phy.cam.ac.uk/~conference/Dasgupta_05_03_2020.pdf
LOCATION:Ryle Seminar Room (930)\, Cavendish Laboratory\, Department of Ph
 ysics
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