por
Antonio Vairo
(IFIC @ University of Milan, INFN)
→
Europe/Madrid
Sala Seminarios IFIC (Edf. Institutos de Investigación)
Sala Seminarios IFIC
Edf. Institutos de Investigación
Descripción
QCD effective field theories provide a consistent definition of the potential describing the interaction of a heavy quark and antiquark. In the weak-coupling regime, I will outline the calculation of its logarithmic part up to N4LO accuracy and discuss several applications to ground state quarkonium observables. In the strong-coupling regime, I will discuss recent lattice data that show the long-range behaviour of the potentials with unprecedented precision.