  We present a new perspective on the study of the behavior of the strong
coupling $\alpha_s(Q^2)$ -- the fundamental coupling underlying the
interactions between quarks and gluons as described by the Quantum
Chromodynamics (QCD) -- in the low-energy infrared (IR) regime. We rely on the
NNSF$\nu$ determination of neutrino-nucleus structure functions valid for all
values of $Q^2$ from the photoproduction to the high-energy region to define an
effective charge following the the Gross-Llewellyn Smith (GLS) sum rule. As a
validation, our predictions for the low-energy QCD effective charge are
compared to experimental measurements provided by JLab.

High Energy Physics - Phenomenology