On the Behavior of the Effective QCD Coupling alpha_tau(s) at Low Scales

Stanley J. Brodsky, Sven Menke, Carlos Merino +1

The hadronic decays of the tau lepton can be used to determine the effective charge alpha_tau(m^2_tau') for a hypothetical tau-lepton with mass in the range 0 < m_tau' < m_tau. Thi…