[SLAC] [SLAC Pubs and Reports] SLAC-PUB-7528Complete O(alpha3s) Results for e+e- --> (g,Z) --> Four Jets Abstract \noindent We present the next-to-leading order ($\cO(\alpha_s^3)$) perturbative QCD predictions for $e^+e^-$ annihilation into four jets. A previous calculation omitted the $\cO(\alpha_s^3)$ terms suppressed by one or more powers of $1/\Nc^2$, where $\Nc$ is the number of colors, and the `light-by-glue scattering' contributions. We find that all such terms are uniformly small, constituting less than 10\% of the correction. For the Durham clustering algorithm, the leading and next-to-leading logarithms in the limit of small jet resolution parameter $\ycut$ can be resummed. We match the resummed results to our fixed-order calculation in order to improve the small $\ycut$ prediction. (Equations render on Windows, Mac OS, AIX, Linux, Solaris, and IRIX with the techexplorer plug-in.) Full Text PDF slac-pub-7528 (1.23 MB) Compressed PostScript slac-pub-7528 (162 KB) Alternate download methods: old, ancient* *download methods - technical info techexplorer slac-pub-7528 (6.32 KB) More Information Full bibliographic data for this document, including its complete author list, is (or soon will be) available from SLAC's SPIRES-HEP Database. Please report problems with this file to posting@slac.stanford.edu. The SLAC preprint inventory is provided by the SLAC Technical Publications Department. Page generated 04 Apr 2001 @ 15:10 PDT by htmlme.pl
\noindent We present the next-to-leading order ($\cO(\alpha_s^3)$) perturbative QCD predictions for $e^+e^-$ annihilation into four jets. A previous calculation omitted the $\cO(\alpha_s^3)$ terms suppressed by one or more powers of $1/\Nc^2$, where $\Nc$ is the number of colors, and the `light-by-glue scattering' contributions. We find that all such terms are uniformly small, constituting less than 10\% of the correction. For the Durham clustering algorithm, the leading and next-to-leading logarithms in the limit of small jet resolution parameter $\ycut$ can be resummed. We match the resummed results to our fixed-order calculation in order to improve the small $\ycut$ prediction. (Equations render on Windows, Mac OS, AIX, Linux, Solaris, and IRIX with the techexplorer plug-in.)
(Equations render on Windows, Mac OS, AIX, Linux, Solaris, and IRIX with the techexplorer plug-in.)
PDF slac-pub-7528 (1.23 MB) Compressed PostScript slac-pub-7528 (162 KB) Alternate download methods: old, ancient* *download methods - technical info techexplorer slac-pub-7528 (6.32 KB)
Full bibliographic data for this document, including its complete author list, is (or soon will be) available from SLAC's SPIRES-HEP Database.