Special Challenges in Quantum Chromodynamics

Abstract

This small workshop, focuses on advanced topics in perturbative Quantum Chromodynamics (QCD), inspired by the scientific legacy of Stefano Catani The main topic of this year's edition is Sudakov resummation. We plan to critically compare different resummation approaches, calculations in direct and conjugate spaces, in Soft Collinear Effective Theory (SCET) and direct QCD, parton showers and automated resummation techniques. We will also discuss the impact of resummation on the description of heavy-quark fragmentation and shape variables in e+e- annihilation, and its relevance for the accurate determination of the strong coupling.