DIS event-shape resummations and spin-offs

Abstract

We present results from a recently completed project to calculate next-to-leading logarithmic resummed distributions for a variety of event shapes in the 1+1-jet limit of DIS. This allows fits for the strong coupling and for non-perturbative effects using the large amount of data on these observables from HERA. Spin-offs include the discovery of a new class of logs for certain final state observables (non-global observables); a program that allows a speed-up by an order of magnitude of certain fixed-order calculations in DIS with DISENT or DISASTER++; and the development of state-of-the-art PDF evolution code.

4 pages; talk presented at the XXXVIIth Rencontres de Moriond `QCD and high energy hadronic interactions', Les Arcs, France, and at the X International Workshop on Deep Inelastic Scattering (DIS2002) Cracow, Poland. v2 corrects error estimates in the fit results