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Next: Acknowledgment Up: SPIN PHYSICS at RHIC Previous: Measurements of Anti-quark

Summary

The acceleration of the polarized protons at RHIC will open a new era of the high energy spin physics. Among a wealth of spin physics capability, expected sensitivities for the spin structure of the nucleon are presented.

The gluon helicity distribution will be measured via high- prompt photon productions. A typical error of the measurement will be 3-40% at 0.1<x<0.3 in pp collisions at GeV, and 1-8% at 0.05<x<0.1 in pp collisions at GeV. Optional check with heavy quark production will be helpful for further studies.

The anti-quark helicity distribution will be extracted from the asymmetry for W production. The production will also provide tool for flavor decomposition of anti-quark helicity, as well as the quark helicity distributions.

  
Figure 6: Expected sensitivities for the flavor decomposed asymmetry in the structure functions imposed on the model predictions by Bourrely and Soffer [24] and by Gehrmann and Stirling [25] (GS95LO(A)).



Saito Naohito
1997年01月28日 16時48分17秒