Production ofψ(3100)in 400-GeV/cproton interactions

Abstract
We present measurements of ψ production and subsequent dimuon decay from 400-GeV/c proton interactions in an iron target over a range of Pt from 0 to 4 GeV/c and xF from - 0.25 to 0.40. The best fits give EdσdxF(1|xF|)2.96±0.27 and dσdPt2exp(2.23±0.05Pt) for Pt>1.2 GeV/c. The observed values of Bdσdy|y=0 and Bσ are 14.0±2.9 and 22.9±4.7 nb/nucleon, respectively.