Orateur
Description
Jet vetoes are important tools that are frequently used to cut away backgrounds or separate different hard scattering processes. The most commonly used variable to veto jets is the simple transverse momentum of a jet. However it can be useful to use a jet veto that is tight in transverse momentum at central rapidities, and gradually becomes looser as one goes forward in rapidity - for example, to reduce sensitivity to jets from pile-up and the underlying event. This naturally leads to a class of such variables related to the leading jets transverse momentum weighed by some rapidity dependent function.
Applying tight cuts on such variables requires resummation of large logarithms of the hard scale over the jet veto scale. I will discuss the resummation of two different rapidity dependent jet veto observables, and present new results at partial N3LL + NNLO for the Drell-Yan process with these two jet vetoes applied. Comparing these predictions with experimental results should provide an interesting new test of our understanding of QCD radiation, as these rapidity dependent vetoes divide the phase space in a quite different way from the traditional transverse momentum veto.
Based on work done with Shireen Gangal and Jonathan Gaunt.
