Quark Masses and Resummation in Precision QCD Theory

TL;DR

This paper demonstrates that amplitude-based resummation effectively manages infrared divergences in QCD with massive quarks, enhancing the precision of theoretical predictions relevant for LHC experiments.

Contribution

It introduces an exact resummation method that addresses IR divergences in initial state radiation involving massive quarks in QCD.

Findings

Resummation tames IR divergences at O(alpha_s^2)

Implications for improved LHC predictions

Enhanced theoretical precision in QCD calculations

Abstract

It is shown that amplitude-based, exact resummation tames the un-cancelled IR divergences at O(alpha_s^2) in initial state radiation in QCD with massive quarks. Implications for precision predictions for LHC physics are discussed.