Speaker
Thomas Becher
Description
We analyze the low-energy dynamics of gap-between-jet cross sections at hadron colliders, for
which phase factors in the hard amplitudes spoil collinear cancellations and lead to double logarith-
mic behavior. Based on a method-of-regions analysis, we identify contributions from perturbative
active-active Glauber-gluon exchanges which have precisely the right structure to make the cross sec-
tion consistent with PDF factorization below the veto scale associated with the gap. The Glauber
contributions we identify are unambiguously defined without any regulators beyond dimensional
regularization.
Primary author
Thomas Becher
