English

Anomalous scaling of linear power corrections

High Energy Physics - Phenomenology 2025-07-28 v1

Abstract

Non-perturbative corrections to hadronic observables represent a critical obstacle to increasing accuracy at colliders. Long taken to scale simply as 1/Q1/Q, where QQ is the centre-of-mass scattering energy, recent work has opened the path towards calculating the anomalous dimension that modifies that scaling. A priori, the problem is complex, requiring a resummation involving arbitrary numbers of large-angle and low-energy gluons. Within a specific framework for kinematic recoil, we show that it reduces to a simple exponential for key observables like the thrust, CC-parameter and energy correlators. This simplicity holds for a specific hadron mass scheme, and also even beyond the two-jet limit.

Keywords

Cite

@article{arxiv.2507.18696,
  title  = {Anomalous scaling of linear power corrections},
  author = {Casey Farren-Colloty and Jack Helliwell and Rtvik Patel and Gavin P. Salam and Silvia Zanoli},
  journal= {arXiv preprint arXiv:2507.18696},
  year   = {2025}
}

Comments

6 pages, 6 figures, plus supplemental material