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Large N-point energy correlator in the collinear limit

Lin Dai1,*, Chul Kim2,†, and Adam K. Leibovich3,‡

  • 1Guangxi Key Laboratory for Relativistic Astrophysics, School of Physical Science and Technology, Guangxi University, Nanning 530004, People’s Republic of China
  • 2Institute of Convergence Fundamental Studies and School of Natural Sciences, Seoul National University of Science and Technology, Seoul 01811, South Korea
  • 3Pittsburgh Particle Physics Astrophysics and Cosmology Center (PITT PACC) Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, USA

  • *Contact author: dailin@gxu.edu.cn
  • †Contact author: chul@seoultech.ac.kr
  • ‡Contact author: akl2@pitt.edu
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Phys. Rev. D 112, 094015 – Published 10 November, 2025

DOI: https://doi.org/10.1103/92jt-2cgf

Abstract

For the N-point energy correlator in the collinear limit, the largest projected angle R in the large N limit can be viewed as the radius of the jet that encompasses all the collinear core particles, while contributions from soft gluons to the radius are suppressed. We relate the N-point energy correlator in the large N limit to the moments of the fragmentation functions to a jet, and, using previous work, we compare the difference between jets initiated by heavy quarks and light quarks. This comparison demonstrates the dead-cone effect.

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Phys. Rev. D 112, 094015– Published 10 November, 2025
  • Received 22 October 2024
  • Accepted 14 October 2025
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Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.

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