Speaker
Dominik Schwienbacher
Description
I 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, I identify three-loop
contributions from perturbative active-active Glauber-gluon exchanges with the correct structure to render the cross section consistent with PDF
factorization below the gap veto scale. From this, two important conclusions may be drawn: first, no double-logarithmic terms appear in the scale evolution below the veto scale, and second, the DGLAP evolution must be correctly matched as well.
Authors
Dominik Schwienbacher
Matthias Neubert
(Johannes Gutenberg University Mainz)
Patrick Angus Hager
Sebastian Eryk Jaskiewicz
(University of Bern)
Thomas Georg Becher
(Universitaet Bern (CH))
