title: Higgs Transverse-Momentum Resummation in Direct Space.
abstract: We propose a new approach to the resummation of the transverse-momentum distribution of a high-mass color-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.
authors.affiliation: Rudolf Peierls Centre for Theoretical Physics, University of Oxford, Keble Road, Oxford OX1 3NP, United Kingdom.
authors.forename: Pier Francesco
authors.initials: PF
authors.lastname: Monni
authors.affiliation: LAPTh, Université de Savoie, CNRS, BP 110, Annecy-le-Vieux F-74941, France.
authors.forename: Emanuele
authors.initials: E
authors.lastname: Re
authors.affiliation: Dipartimento di Fisica, Università di Torino and INFN, Sezione di Torino, Via P. Giuria 1, I-10125 Turin, Italy.
authors.forename: Paolo
authors.initials: P
authors.lastname: Torrielli