1 research outputs found
Evolution of Gluon Spin in the Nucleon
We examine the evolution of gluon polarization in polarized nucleons.
As is well known, the evolution of is negligible for
typical momentum transfer variations found in experimental deep inelastic
scattering. As increases, however, the leading nonzero term in the
evolution equation for the singlet first moment reduces the magnitude of the
gluon spin. At low the term can vanish, and
ultimately become negative. Thus, low energy model calculations yielding
negative are not necessarily in conflict with experimental evidence
for positive gluon polarization at high .Comment: ReVTeX + psfig, 7 pages, 3 figures (postscript), accepted in Physics
Letters B, ([email protected]