IRIS Institutional Research Information System - AIR Archivio Istituzionale della Ricerca

IRIS è il sistema di gestione integrata dei dati della ricerca (persone, progetti, pubblicazioni, attività) adottato dall'Università degli Studi di Milano.

AIR nasce in UNIMI nel 2006 con lo scopo di raccogliere, documentare e conservare le informazioni sulla produzione scientifica dell'Università degli Studi di Milano e costituisce di fatto l'Anagrafe della ricerca dell'Ateneo.

We consider the transverse-momentum (qT) distribution of Z bosons produced in hadronic collisions. At small values of qT, we perform the analytic resummation of the logarithmically enhanced QED contributions up to next-to-leading logarithmic accuracy, including the mixed QCD-QED contributions at leading logarithmic accuracy. Resummed results are consistently matched with the next-to-leading fixed-order results (i.e. O(α2)) at small, intermediate and large values of qT. We combine the QED corrections with the known QCD results at next-to-next-to-leading order (O(αS2)) and next-to-next-to-leading logarithmic accuracy. We show numerical results at LHC and Tevatron energies, studying the impact of the QED corrections and providing an estimate of the corresponding perturbative uncertainty. Our analytic results for the combined QED and QCD resummation, obtained through an extension of the qT resummation formalism in QCD, are valid for the production of generic neutral and colourless high-mass systems in hadronic collision.

Combining QED and QCD transverse-momentum resummation for Z boson production at hadron colliders / L. Cieri, G. Ferrera, G.F.R. Sborlini. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1126-6708. - 2018:8(2018 Aug), pp. 165.1-165.16.

Powered by IRIS-about IRIS-Utilizzo dei cookie

 Copyright © 2020