Constraint on $\Delta g(x)$ at large $x$

Abstract

We investigate the polarized gluon distribution Δg(x) by a global analysis of current DIS data and the π^0 data from RHIC-Spin experiments. The π^0 data provide a strong constraint on Δg(x), so that its uncertainty is reduced. Furthermore, new DIS data of COMPASS and HERMES play an important role in determining Δg(x) at large x.

4page, 3 eps figures, to appear in the proceedings of DIS 2006, April 20-24, 2006, Tsukuba, Japan