Power Corrections to e+e- Dijet Event Shapes

Details Power Corrections to e+e- Dijet Event Shapes Power Corrections to e+e- Dijet Event Shapes

2003-10-04

arxiv.org/abs/hep-ph/0310058v1

Eur.Phys.J. C33 (2004) S407-S409

Physics

High Energy Physics

High Energy Physics - Phenomenology

3 pages, 1 figure; presented by C.F. Berger at the International Europhysics Conference on High-Energy Physics (HEP 2003), Aac

Scientific paper

10.1140/epjcd/s2003-03-409-6

We discuss a class of event shapes for e+e- dijet events that include the thrust as a special case. Large logarithmic corrections to the corresponding cross sections can be resummed to all logarithmic orders at leading power. However, irrespective of the order up to which the perturbative expansion is calculated, it has to be supplemented by nonperturbative corrections due to its at best asymptotic nature. We find that the leading power corrections are universal for the class of event shapes discussed here. Based on these findings, we provide sample numerical predictions for the distributions of the new event shapes.

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