Shape functions and power corrections to the event shapes

Details Shape functions and power corrections to the event shapes Shape functions and power corrections to the event shapes

1998-06-30

arxiv.org/abs/hep-ph/9806537v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 pages, LaTeX style, 4 figures embedded with epsf.sty

Scientific paper

We show that the leading power corrections to the event shape distributions can be resummed into nonperturbative shape functions that do not depend on the center-of-mass energy and measure the energy flow in the final state. In the case of the thrust variable, the distribution is given by the convolution of the perturbative spectrum with the shape function. Choosing the simplest ansatz for the shape function we find that our predictions for the thrust distribution provide a good description of the data throughout a wide range of energies.

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