Seminars and Journal Clubs

The Strong Coupling Constant from the Lattice

by Luigi del Debbio (Edinburgh U.)




Lattice QCD has reached a mature status. State of the art lattice computations include u, d, s (and even the c) sea quark effects in their computation together with an estimate of the electromagnetic corrections in hadronic observables. This precise and first principles description of the Standard Model at low energies allows the determination of multiple quantities that are essential inputs for phenomenology and not accessible to perturbation theory.

One of these fundamental parameters that are determined from simulations of lattice QCD is the strong coupling constant, which plays a central role in the quest for precision at the LHC. Lattice calculations currently provide its best determinations, and will play a central role in future phenomenological studies.

In this talk we review the state-of-the-art of lattice calculations and discuss future developments.