Quark mass effects to \sigma(e^+e^- -> hadrons) at O(\alpha_s^3)
K.G. Chetyrkin, R. Harlander, J.H. Kuehn
TL;DR
This paper calculates the effects of quark masses on the e+e- to hadrons cross-section at order alpha_s^3 using operator product expansion and renormalization group techniques.
Contribution
It provides a detailed computation of quartic mass terms at high order in alpha_s^3 for the hadronic R ratio, advancing precision in QCD predictions.
Findings
Quartic mass terms at O(alpha_s^3) are computed.
The calculation improves the accuracy of the hadronic R ratio.
Method combines operator product expansion with renormalization group analysis.
Abstract
The calculation of the quartic mass terms at order \alpha_s^3 to the hadronic R ratio is described. It is based on the operator product expansion for the quark current correlator, combined with an application of the renormalization group equation.
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Taxonomy
TopicsQuantum Chromodynamics and Particle Interactions · Particle physics theoretical and experimental studies · High-Energy Particle Collisions Research