Predictions for track-based observables and energy correlators

by Wouter Waalewijn (University of Amsterdam)

Monday 8 Jan 2024, 11:00 → 12:30 Europe/Zurich

Room 5017 (University of Milan-Bicocca)

The use of tracking information is crucial to the continued success of the jet substructure program at the LHC, due to its superior angular resolution. Precise theoretical predictions for track-based observables can be obtained using the track-function formalism. I will discuss how we recently extended this formalism to order alpha_s^2, making precise predictions for track-based observables possible. Interestingly, the non-linear evolution of track functions acts as "master equation" for (multi-)hadron fragmentation functions. I will also discuss energy correlators, a new class of jet substructure measurements for which a range of interesting applications have been proposed, including: studying confinement, measuring the top quark mass more precisely, and unravelling the nature of the quark-gluon plasma. Tracks are crucial for the small angular scales probed by these measurements, and I will discuss how to interface calculations for energy correlators with track functions, including some first phenomenological results.

milan_seminar_2024.pdf