PHOBOS PRELIMINARY

p+p 200 GeV  Anti-particle to particle ratios 

Data are integrated over all events accepted by the Phobos 
minumum bias trigger

Y_lab~0-1.4 for pions, 0-0.8 for kaons and protons
Upper pT cutoff ~0.6 for pions and kaons ~1.1 for protons
See acceptance plots in G Veres talk for details

Uncertainties quoted are +/-statistical+/-systematic

<pi->/<pi+>           <K->/<K+>          <p-bar>/<p>   
1.000+/-0.012+/-0.014  0.93+/-0.05+/-0.03  0.85+/-0.04+/-0.03