NLO results for five, six and seven jets in electron-positron   annihilation
  We present next-to-leading order corrections in the leading colour approximation for jet rates in electron-positron annihilation up to seven jets. The results for the two-, three-, and four-jet rates agree with known results. The NLO jet rates have been known previously only up to five jets. The results for the six- and seven-jet rate are new. The results are obtained by a new and efficient method based on subtraction and numerical integration. 
Sebastian Becker, Daniel Goetz, Christian Reuschle, Christopher Schwan   and Stefan Weinzierl
hep-ph