Evolution variable dependence of jet substructure

Understand

Studies on jet substructure have evolved significantly in recent years.

• Jet substructure is essentially determined by QCD radiations and non-perturbative effects.
• Predictions of jet substructure are usually different among Monte Carlo event generators, and are governed by the parton shower algorithm implemented.
• For leading logarithmic parton shower, even though one of the core variables is the evolution variable, its choice is not unique.