About QCD coupling constant at NNLO from DIS data

TL;DR

This paper presents a precise determination of the QCD coupling constant at NNLO using deep inelastic scattering data, improving the accuracy of fundamental parameter measurements in quantum chromodynamics.

Contribution

The study provides a NNLO analysis of DIS data for the first time in the non-singlet approximation, yielding a refined value of alpha_s(M_Z^2).

Findings

Alpha_s(M_Z^2) = 0.1167 ± 0.0022

Analysis performed on high-statistics DIS data from multiple collaborations

Achieved NNLO accuracy in QCD coupling constant determination.

Abstract

We give a brief review of our recent QCD analysis carried out over the deep inelastic scattering data on F2 structure function and in the non-singlet approximation to the accuracy up to next-to-next-to-leading-order. Specifically, analysis was performed over high statistics deep inelastic scattering data provided by BCDMS, SLAC, NMC and BFP collaborations. For the coupling constant the following value alpha_s(M_Z^2) = 0.1167 \pm 0.0022 was found.