Dec 8 – 11, 2014
University of Antwerp
Europe/Zurich timezone
REF 2014: Resummation, Evolution, Factorization

Overview on transverse momentum resummation

Dec 10, 2014, 9:30 AM
1h
Building R, Room 218 (University of Antwerp)

Building R, Room 218

University of Antwerp

Rodestraat 14 2000 Antwerp

Speaker

Giancarlo Ferrera (University of Milan)

Description

We consider the transverse-momentum distribution of generic high-mass systems of non-strongly interacting particles (lepton pairs, vector bosons, Higgs particles, ...) produced in hadronic collisions. The logarithmically-enhanced contributions at small transverse momentum are treated to all perturbative orders by a universal resummation formula that depends on a single process-dependent hard factor. The formalism is applied to Drell-Yan lepton pairs and Higgs boson production at Tevatron and LHC energies. We combine the most advanced perturbative information available at present for these processes: resummation up to next-to-next-to-leading logarithmic accuracy and fixed-order perturbation theory up to next-to-next-to-leading order. We show and discuss the reduction in the scale dependence of the results with respect to lower-order calculations, estimating the corresponding perturbative uncertainty.

Primary author

Giancarlo Ferrera (University of Milan)

Presentation materials