Seminumerical resummation of event shapes and jet rates

Abstract

For many observables, the most difficult part of a single logarithmic resummation is the analytical treatment of the observable's dependence on multiple emissions. We present a general numerical method, which allows the resummation specifically of these single logarithms. Some first applications and new results for the thrust major, the oblateness and the two-jet rate in the Durham algorithm are also presented.

Comments: 4 pages, 4 figures. Uses moriond.sty (included). Talk presented at the XXXVIIth Rencontres de Moriond, QCD and High Energy Hadronic Interactions, Les Arcs, France, March 16-23, 2002