2020/04/30 by Hao Chen, Ian Moult, Xiaoyuan Zhang +2 · 2 citations
Mathematics · Physics and Astronomy · #Analytic continuation #Black Holes and Theoretical Physics #High-Energy Particle Collisions Research #Jet (fluid) #Large Hadron Collider #Mathematical analysis #Mathematics #Observable #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum chromodynamics #Quantum mechanics #Resummation #Statistical physics #Substructure #Theoretical physics #Wilson loop #hep-ph #hep-th #nucl-th
paper · pdf · doi:10.1103/physrevd.102.054012
published as Phys. Rev. D 102, 054012 (2020) · 25 pages, many colorful illustrations. v2. Updated to match journal version
openalex created_date 2020/05/01 · openalex publication_date 2020/09/14 · arxiv created 2020/11/06 · arxiv updated 2020/11/10 · openalex updated_date 2026/08/05
We introduce an infinite set of jet substructure observables, derived as projections of N-point energy correlators, that both are convenient for experimental studies and maintain remarkable analytic properties derived from their representations in terms of a finite number of light ray operators. We show that these observables can be computed using tracking or charge information with a simple reweighting by integer moments of nonperturbative track or fragmentation functions. Our results for the projected N-point correlators are analytic functions of N, allowing us to derive resummed results to next-to-leading logarithmic accuracy for all N. We analytically continue our results to noninteger values of N and define a corresponding analytic continuation of the observable, which we term a \ensuremathν correlator, that can be measured on jets of hadrons at the LHC. This enables observables that probe the leading twist collinear dynamics of jets to be placed into a single analytic family, which we hope will lead to new insights into jet substructure.