Factorization Restoration through Glauber Gluons
Thomas Becher, Patrick Hager, Sebastian Jaskiewicz, Matthias Neubert, Dominik Schwienbacher
Abstract
We analyze the low-energy dynamics of gap-between-jets cross sections at hadron colliders, for which phase factors in the hard amplitudes spoil collinear cancellations and lead to double ("super-leading") logarithmic behavior. Based on a method-of-regions analysis, we identify three-loop contributions from perturbative active-active Glauber-gluon exchanges with the right structure to render the cross section consistent with PDF factorization below the gap veto scale. The Glauber contributions we identify are unambiguously defined without regulators beyond dimensional regularization.
Topics & Concepts
GlauberGluonFactorizationPhysicsParticle physicsLogarithmHadronRegularization (linguistics)Statistical physicsNuclear physicsQuantum chromodynamicsScatteringMathematicsComputer scienceQuantum mechanicsArtificial intelligenceAlgorithmMathematical analysisParticle physics theoretical and experimental studiesHigh-Energy Particle Collisions ResearchQuantum Chromodynamics and Particle Interactions