On the universality of hadronisation corrections to QCD jets

TL;DR

This paper refines analytical estimates of hadronisation corrections to QCD jets, linking them to known power corrections at the two-loop level, with implications for various jet algorithms.

Contribution

It establishes a two-loop level connection between hadronisation corrections to QCD jets and LEP event-shape power corrections, expanding the theoretical framework.

Findings

Analytical estimates of hadronisation corrections are improved.

The link to LEP event-shape corrections is firmly established.

Results are applicable to kt and anti-kt jet algorithms.

Abstract

We improve previously derived analytical estimates of hadronisation corrections to QCD jets at hadron colliders, firmly establishing at the two-loop level the link to the well-known power corrections to LEP event-shape variables. The results of this paper apply to jets defined in the kt and anti-kt algorithms but the general framework presented here holds also for other algorithms for which calculations are in progress.