We present the next-to-leading order calculation of two four-jet event shape variables, the D parameter and acoplanarity differential distributions. We find large, more than 100% radiative corrections. The theoretical prediction for the D parameter is compared to L3 data obtained at the Z peak and corrected to hadron level.
@article{arxiv.hep-ph/9707309,
title = {Next-to-Leading Order Calculation of Four-Jet Shape Variables},
author = {Zoltán Nagy and Zoltán Trócsányi},
journal= {arXiv preprint arXiv:hep-ph/9707309},
year = {2009}
}
Comments
11 pages, latex with aps, epsf, rotate styles 3 tables, 3 figures typo in eq. 10 corrected, note and reference added, introduction revised