Threshold resummation in SCET vs. direct QCD: a systematic comparison

TL;DR

This paper systematically compares soft-gluon resummation techniques in SCET and direct QCD for Higgs production, revealing their analytical and phenomenological differences using saddle point analysis.

Contribution

It provides a detailed analytical and phenomenological comparison of SCET and direct QCD resummation methods for Higgs production.

Findings

Quantitative differences between SCET and direct QCD approaches.

Analytical insights into resummation techniques.

Phenomenological implications for Higgs production.

Abstract

We perform a systematic comparison of soft-gluon resummation in SCET and in a standard "direct" QCD (dQCD) approach, both from an analytical and a phenomenological point of view. In particular, we concentrate on Higgs boson production in gluon-gluon fusion at a hadron collider. Using specifically a saddle point argument, we arrive at a detailed understanding of the quantitative differences between these two approaches.