Also in small seminar room.
Abstract:
The outstanding progress in perturbative calculations enabled us to
augment our knowledge of the interactions among elementary particles,
the fundamental building blocks of our universe. Non-perturbative
corrections usually manifest themselves as power corrections inversely
proportional to the center-of-mass energy. In this talk I will discuss how
to infer the presence of linear-power corrections, which can give percent
level contributions at scales of the order 100 GeV, and significantly limit
the ultimate precision of our theoretical predictions. In particular, I will focus
on observables used to infer the top-quark mass and the transverse momentum
of gauge bosons, where the targeted theoretical uncertainty is 1% or lower.
I will then present a new method to estimate hadronisation corrections for
event shapes, which can be used to measure the QCD coupling constant.
Peter Denton