Top quark effects on the virtual photon structure function at ILC

TL;DR

This paper analyzes how top quark mass effects influence the virtual photon structure function in high-energy collisions, using perturbative QCD and considering threshold effects relevant for future collider experiments.

Contribution

It introduces a detailed calculation of top quark mass effects on the virtual photon structure function including next-to-leading order QCD corrections and threshold effects.

Findings

Top quark mass significantly affects the virtual photon structure function.

Threshold effects alter the running coupling constant near the top quark mass scale.

Results are relevant for future collider experiments like the ILC.

Abstract

We investigated top quark effects on virtual photon structure functions by pQCD. We include the top quark mass effects on the virtual photon structure function with the quark parton model and with the operator product expansion up to the next-to-leading order in QCD. We also consider the threshold effect on the running coupling constant in the calculation to the effective photon structure function with a matching condition. The numerical calculations are investigated in the kinematical region expected at the future international linear collider.