Speaker
Alexandre Deur
(Jefferson Lab)
Description
We will discuss the QCD running coupling $\alpha_s$, starting from its pQCD definition and then show how it can be extended to the non-perturbative domain using the concept of effective charges. This permits us to measure $\alpha_s$ in the non-perturbative domain, and compute it in the Holographic LF QCD (HLFQCD) approach. We will briefly describe the calculation, compare its result to $\alpha_s$ measurements, as well as to independent calculations based on the Dyson-Schwinger equations. Finally, we will show how αs from HLFQCD permits us to determine the hadron mass spectrum using solely $\Lambda_{QCD}$ as input.
Primary author
Alexandre Deur
(Jefferson Lab)
