QCD effective charges from low-energy neutrino structure functions

Tanjona Rabemananjara

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arXiv · 2307.05969

QCD effective charges from low-energy neutrino structure functions

Tanjona Rabemananjara

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Abstract

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.

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Tanjona Rabemananjara. 2023-07-12. QCD effective charges from low-energy neutrino structure functions. https://arxiv.org/abs/2307.05969

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