Dr. Antonio Vairo "Determination of $alpha_s$ from the QCD static energy"
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Europe/Rome
Aula A
Aula A
Description
Abstract:
We review one of the most accurate low-energy determinations of $\alpha_s$.
Comparing at short distances the QCD static energy at three loops and resummation of the next-to-next-to leading logarithms with its determination in 2+1-flavor lattice QCD, we obtain $\alpha_s(1.5~{\rm GeV})=0.336^{+0.012}_{-0.008}$, which corresponds to $\alpha_s(M_Z)=0.1166^{+0.0012}_{-0.0008}$.
We discuss future perspectives.
