Pheno. meeting - Divergent series and physical observables: an introduction to Sudakov resummation - Giovanni Ridolfi

Thursday 24 Nov 2011, 10:00 → 11:00 Europe/Brussels

E/3rd floor-E.361 - Meeting room (E.361) (Marc de Hemptinne (chemin du Cyclotron, 2, Louvain-la-Neuve))

The subject of this talk is the resummation of the QCD perturbative expansion in the regime of soft gluon emission, often referred to as Sudakov resummation. I will present an introduction to this subject, and discuss its phenomenological relevance. After a brief recollection of known results, I will illustrate some problems in the computation of physical observables from resummed expressions. I will review some of the techniques usually adopted, and describe a recently proposed one, based on the idea of Borel summation of divergent series.

Slides Louvain11.pdf