Speaker
Dominik Schwienbacher
(University of Bern)
Description
I derive a novel factorization theorem for N-jettiness at hadron
colliders, which incorporates coherence-violating effects induced by
Glauber gluons and several new momentum modes. Their interplay generates
coherence-violating logarithms (CVLs) starting at four-loop (N≥1) or
five-loop order (N=0). I show the anomalous dimensions required for the
resummation of CVLs and establish a general framework for the systematic
treatment of coherence violation. The findings imply that most existing
factorization formulas for global LHC observables must be revised.