THE STAR SPIN PHYSICS PROGRAM

Nurushev, S.B.
JINR

Year: 2004
Page No: 376-384
Pages: 9
Year: Dubna 2004 JINR

Abstract: The STAR Collaboration aims to observe polarized proton collisions at RHIC to obtain information about the spin structure of the nucleon. The main emphasis is the determination of the degree that gluons contribute to the proton's spin from measurements of jet and direct photon productions for collisions at $\sqrt{s}$ = 200 and 500 GeV, when both protons are longitudinally polarized. In addition, the flavor decomposition of valence and sea quarks polarizations will be probed by production of W and Z bosons in the collisions of longitudinally polarized protons. The transversity structure function may be accessiable in collisions of transverselly polarized protons. Hyperon polarizations and the role of spin as a signature of the Quark-Gluon plasma are discussed too.

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