A new approach to the Higgs transverse-momentum resummation at NNLL+NNLO

Abstract

We propose a new approach to the resummation of the transverse-momentum distribution of a high-mass colour-singlet system in hadronic collisions. The resummation is performed in momentum space and is free of kinematic singularities at small transverse momentum. We derive a formula accurate at the next-to-next-to-leading-logarithmic level, and present the first matched predictions to next-to-next-to-leading order for Higgs-boson production in gluon fusion at the LHC. This method can be adapted to all observables featuring kinematic cancellations in the infrared region.

Comments: Minor changes to abstract and text, a few references added. First figure was changed to make its content clearer. The text referring to the plot was changed accordingly