Semiclassical mechanism for single-spin asymmetry in π^0-production
Abstract
The chiral quark model combined with unitarity and impact parameter picture provides simple semiclassical mechanism for generation of the single-spin asymmetry
A
N
in the
π
0
-production in the polarized proton collisions at RHIC. We derive its linear
x
F
-dependence in polarized proton fragmentation region along with the energy and transverse momentum independence at large
p
T
values.