Speaker
Matthias Neubert
(Johannes Gutenberg University Mainz)
Description
Jet cross sections at hadron colliders are sensitive to coherence-violating double logarithmic corrections (often called “super-leading logarithms”) in higher orders of perturbation theory. For both non-global and global jet observables, we discuss the physical origin of these effects and show how they can be resummed. Despite the fact that collinear factorization is violated in these processes, we argue that the familiar PDF factorization of jet cross section still holds.