Measurement of the analyzing power in pp elastic scattering in the peak   CNI region at RHIC
  We report the first measurements of the A_N absolute value and shape in the -t range from 0.0015 to 0.010GeV/c^2 with a precision better than 0.005 for each A_N data point using a polarized atomic hydrogen gas jet target and the 100 GeV RHIC proton beam. 
H. Okada, I.G. Alekseev, A. Bravar, G. Bunce, S. Dhawan, R. Gill, W.   Haeberli, O. Jinnouchi, A. Khodinov, A. Kponou, Y. Ma...