English

Generic dijet soft functions at two-loop order: uncorrelated emissions

High Energy Physics - Phenomenology 2020-04-21 v1

Abstract

We extend our algorithm for automating the calculation of two-loop dijet soft functions to observables that do not obey the non-Abelian exponentiation theorem, i.e. to those that require an independent calculation of the uncorrelated-emission contribution. As the singularity structure of uncorrelated double emissions differs substantially from the one for correlated emissions, we introduce a novel phase-space parametrisation that isolates the corresponding divergences. The resulting integrals are implemented in SoftSERVE 1.0, which we release alongside of this work, and which we supplement by a regulator that is consistent with the rapidity renormalisation group framework. Using our automated setup, we confirm existing results for various jet-veto observables and provide a novel prediction for the soft-drop jet-grooming algorithm.

Keywords

Cite

@article{arxiv.2004.08396,
  title  = {Generic dijet soft functions at two-loop order: uncorrelated emissions},
  author = {Guido Bell and Rudi Rahn and Jim Talbert},
  journal= {arXiv preprint arXiv:2004.08396},
  year   = {2020}
}

Comments

28 pages, 5 figures

R2 v1 2026-06-23T14:55:39.992Z