Power Suppressed Corrections to Hadronic Event Shape Variables

Details Power Suppressed Corrections to Hadronic Event Shape Variables Power Suppressed Corrections to Hadronic Event Shape Variables

1994-06-24

arxiv.org/abs/hep-ph/9406392v1

Phys.Lett. B344 (1995) 407-412

Physics

High Energy Physics

High Energy Physics - Phenomenology

(12 pages, 2 figures, uses harvmac and uufiles), UCSD/PTH 94-11

Scientific paper

10.1016/0370-2693(94)01504-6

For high energy processes ($M\gg \Lambda_{QCD}$) there are infrared safe hadronic shape variables that have a calculable perturbative expansion in $\alpha_s(M^2)$. However, nonperturbative power suppressed corrections to these variables are not well understood. We use the behavior of large orders of the perturbation expansion to gain insight into the nonperturbative corrections. Our results suggest that certain shape variables have nonperturbative corrections suppressed by fractional powers of $\Lambda_{QCD}^2/M^2$.

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