Increasing the precision of the QCD coupling around the tau mass scale

INFN/DIFI Phenomenology Seminar

  • Dipartimento di Fisica - A601 | Zoom
  • Seminar

Speakers

Dr. Diogo Boito
Universidade de Sao Paulo/University of Vienna

Details

The theoretical precision of many crucial observables in the Standard Model is nowadays limited by our knowledge of QCD parameters.
Determining the strong coupling and quark masses with smaller uncertainties is therefore a fundamental task in order to match the reduced errors that are expected from present and future experiments.
Extracting the QCD parameters is not a straightforward task, since
they are not physical observables: theory input is as important as experimental data. I will discuss recent developments in the precise determination of the strong coupling around the tau mass scale, which represents one of the most stringent tests of asymptotic freedom. I will discuss a viable solution to a long-standing problem related to the renormalization group improvement of the perturbative series, the interplay between perturbative and non-perturbative contributions, and the role of recent experimental data.

Per partecipare in presenza, prenotarsi seguendo il link
https://docs.google.com/document/d/1uaw5DHG0VykTHraDiAqYjbLFXsrOIXaftj_n04sj4PE/edit?usp=sharing
oppure per partecipare su Zoom, collegarsi al meeting
Topic: Theory and Pheno seminars
https://infn-it.zoom.us/j/8573185271
Meeting ID: 857 318 5271