Numerical solution of NLO Q^2 evolution equations for spin-dependent structure functions

Abstract

Numerical solution of DGLAP $Q^2$ evolution equations is studied for polarized parton distributions by using a ``brute-force" method. NLO contributions to splitting functions are recently calculated,and they are included in our analysis. Numerical results in polarized parton distributions and in the structure function $g_1$ are shown. In particular, we discuss how numerical accuracy depends on number of steps in the variable $x$ and in $Q^2$.

Comments: 4 pages, Latex with epsf.sty, epsfig.sty, and wrapfig.sty 3 eps figures. Talk given at the 12th International Symposium on High-Energy Spin Physics. Amsterdam, The Netherlands, September 10-14, 1996. Complete postscript file including the figures is available at ftp://ftp.cc.saga-u.ac.jp/pub/paper/riko/quantum1 or at http://www.cc.saga-u.ac.jp/saga-u/riko/physics/quantum1/structure.html Email:96sm18, kumanos, 96td25@cc.saga-u.ac.jp