Orateur
Dr
Alberto Ramos
(CERN)
Description
We review the ALPHA collaboration strategy for obtaining the QCD
coupling at the electroweak scale via Lattice QCD simulations. In the
three-flavor effective theory we compute non-perturbatively the
running of the strong coupling from hadronic scales to the electroweak
scale. The result for the Lambda parameter in the three-flavor
effective theory is used to obtain an accurate value of the strong
coupling by means of (high order) perturbative relations between the
effective theory couplings at the charm and beauty quark ``thresholds''.
Author
Dr
Alberto Ramos
(CERN)
