New angles on energy correlators

by Wouter Waalewijn

Wednesday 15 Apr 2026, 12:30 → 14:30 America/Los_Angeles

48/2-224 - Madrone (SLAC)

Energy correlators have emerged as powerful tools for probing jet substructure,  cleanly separating physics across multiple scales and providing a more direct connection to quantum field theory. After highlighting some key applications, I will focus on the two-point correlator measured on charged-particle tracks, which offers superior angular resolution. Combining a high-precision theoretical prediction with a reanalysis of LEP data, I will demonstrate the current level of quantitative control. 

I will then turn to higher-point energy correlators, which encode richer information about energy flow but have traditionally been computationally prohibitive. I will show that a new parametrization dramatically reduces their computational cost and enables new directions. By analytically continuing the number of correlator points N, the limit N -> 0 opens a new window into small-x physics, with first indications seen in CMS Open Data. I will present the factorization of these observables, and discuss the structure of nonperturbative effects in the collinear regime.