Speaker
Dr
Deepak Kar
(University of Witwatersrand)
Description
By measuring the substructure of a jet, one can assign it a quark or gluon tag. In this talk, we confront the challenges faced when going beyond this leading-order understanding, using both parton shower generators and first-principles calculations to assess the impact of higher-order perturbative and nonperturbative physics. Working in the idealized context of electron-positron collisions,where one can define a proxy for quark and gluon jets based on the Lorentz structure of the production vertex, we find a fascinating interplay between perturbative shower effects and nonperturbative hadronization effects. Turning to proton-proton collisions, we highlight a core set of measurements that would constrain current uncertainties in quark/gluon tagging and improve the overall modeling of jets at the Large Hadron Collider.
| I intend to submit my contribution for the proceedings | No |
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Primary authors
Andrew Larkoski
(Reed College)
Andrzej Siodmok
(CERN)
Davison Soper
(Oregon)
Dr
Deepak Kar
(University of Witwatersrand)
Gregory Soyez
(IPhT, CEA Saclay)
Jesse Thaler
(MIT)
Lief Lonnblad
(Lund)
Marat Freytsis
(Oregon)
Philippe Gras
(CEA/IRFU Saclay)
Simon Platzer
(Durham/Manchester)
