Higher-point Energy Correlators: Factorization in the Back-to-Back Limit & Non-perturbative effects

Ankita Budhraja (U of Amsterdam)

Aug 06. 2026, 10:00 — 10:40

N-point energy correlators are powerful observables for studying strong interactions, with wide range of applications ranging from extractions of the strong coupling αs to probes of jet modification in heavy-ion collisions and determination of the top-quark mass. However, their practical use has been limited due to the complicated phase space for large N. Following a recently introduced parametrization that simplifies this structure, I will discuss projected N-point correlators in two regimes: factorization in the back-to-back limit and leading non-perturbative effects in the collinear limit. In particular, I will outline the computation of a new one-loop jet function which is the only ingredient needed for the next-to-next-to-leading-logarithmic resummation. Finally, I will also discuss the analytic structure of leading non-perturbative power corrections for arbitrary N. I will show that a new non-perturbative matrix element arises for N<1 which can be related to (in a certain approximation) the standard non-perturbative parameter that appears for N>1. 

Further Information
Venue:
ESI Schrödinger Lecture Hall
Associated Event:
New Paradigms for Harnessing Quantum Field Theory at Colliders (Thematic Programme)
Organizer(s):
Alessandro Broggio (U of Vienna)
André H. Hoang (U of Vienna)
Bianka Meçaj (LANL, Los Alamos)
Simon Plätzer (U of Graz)
Massimiliano Procura (U of Vienna)
Rudi Rahn (U of Vienna)
Malin Sjödahl (Lund U)
Iain W. Stewart (MIT, Cambridge)