Speaker
Description
The PHENIX collaboration has observed a large azimuthal asymmetry
of forward neutrons produced in polarized pA collisions. The data
are well described by a model incorporating photons from the high Z
nucleus photoproducing low mass baryonic states from the polarized
proton. The model is based on well known electromagnetic effects and
well measured photoproduction processes.
We will discuss possible application of this process to polarimetry of
high energy polarized proton beams. A simple target/detector system
will be described, based on standard detector technology. Rate estimates
will be presented, based on feasible targets and realized RHIC and
planned EIC polarized proton beams. Possible tests at RHIC runs in
the next few years will be outlined.
