The QCD running coupling at all scales and the connection between hadron masses and \Lambda_s

Abstract

We report on recent experimental and theoretical developments in our understanding of the QCD running coupling \alpha_s in QCD's nonperturbative regime. They allow us to analytically compute the hadron mass spectrum, with \Lambda_s the only input necessary to this determination. The computed spectra agrees well with experimental data.

Comments: Contribution to the proceedings of the 11th International Workshop on the Physics of Excited Nucleons (NSTAR 2017) 11 pages, 2 figures