\section*{Acnowledgments}
We thank the Collider Accelerator Department and the RHIC/AGS Operation Groups. We also would like to thank A.~Bazilevsky, B.Z.~Kopeliovich, and M.~Krelina for useful discussions. B.Z.~Kopeliovich read the manuscript and made valuable comments. This work was supported by Brookhaven Science Associates, LLC under Contract No.~DE-AC02-98CH\,10886 with the U.S. Department of Energy. Funding was also provided from the RIKEN BNL Research Center. N.H.B. is grateful for partial support from the School of Mathematics.
\end{acknowledgments}

