Factorization scheme dependence of the NLO inclusive jet cross section

TL;DR

This paper investigates how the choice of factorization scheme and scale affects the NLO inclusive jet cross section, revealing significant variations that depend on the energy and scheme parameters.

Contribution

It introduces a parametric study of factorization scheme dependence, interpolating between MSbar and DIS schemes, and quantifies the impact on the jet cross section.

Findings

Cross section varies by about 9% at 50 GeV with scheme and scale changes.

Variation increases to approximately 32% at 400 GeV.

Scheme dependence is significant and energy-dependent.

Abstract

We study the factorization scheme dependence of the next-to-leading order inclusive one jet cross section d sigma/dE_T. The scheme is varied parametrically along the direction that transforms the MSbar scheme to the DIS scheme: we introduce a parameter lambda such that lambda = 0 is MSbar and lambda = 1 is DIS. The factorization scale mu is also varied. We observe a change of +/- 9% in the cross section for E_T = 50 GeV when mu and lambda are varied in the range -2 < lambda < 2, E_T/8 < mu < 2 E_T. This grows to +/- 32% for E_T = 400 GeV.