Contribution
Speakers
- Dr. Deepak KAR
Primary authors
- Jesse THALER (MIT)
- Marat FREYTSIS (Oregon)
- Philippe GRAS (CEA/IRFU Saclay)
- Andrew LARKOSKI (Reed College)
- Lief LONNBLAD (Lund)
- Simon PLATZER (Durham/Manchester)
- Andrzej SIODMOK (CERN)
- Davison SOPER (Oregon)
- Gregory SOYEZ (LPTHE, CEA Saclay)
- Dr. Deepak KAR (TU Dresden)
Files
Abstract content
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.