Electron-Positron Annihilation into Four Jets at Next-to-Leading Order in ${\alpha }_s$

Abstract

We calculate the rate for $e^{+}{e}^{-}$ annihilation into four jets at next-to-leading order in perturbative QCD, but omitting terms that are suppressed by one or more powers of $1/\Nc^2$, where $\Nc$ is the number of colors. The $\cO(α_s^3)$ corrections depend strongly on the jet resolution parameter $\ycut$ and on the clustering and recombination schemes, and they substantially improve the agreement between theory and data.

arXiv commentLaTex, 7 pages with 3 encapsulated figures. Minor changes and references added

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