Resummation of thrust distributions in DIS

TL;DR

This paper presents a calculation of resummed thrust distributions in deep inelastic scattering, comparing two variants and matching with fixed order calculations to improve theoretical predictions.

Contribution

It introduces a novel resummation approach for thrust in DIS and provides a method to match these with fixed order results for enhanced accuracy.

Findings

Resummed distributions for thrust in DIS are successfully calculated.

Comparison with Monte Carlo programs shows good agreement.

A prescription for matching resummed and fixed order calculations is proposed.

Abstract

We calculate the resummed distributions for the thrust in DIS in the limit T->1. Two variants of the thrust are considered: that normalised to Q/2, and that normalised to the energy in the current hemisphere. The results expanded to second order are compared to predictions from the Monte Carlo programs DISENT and DISASTER++. A prescription is given for matching the resummed expressions with the full fixed order calculation.