Asymmetry of prompt photon production in (p)over-right-arrow(p)over-right-arrow collisions at RHIC
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The prompt photon production in (p) over right arrow (p) over right arrow collisions at high energies is studied. The double-spin asymmetry A(LL) of the process is calculated by using the Monte Carlo code SPHINX. A possibility to discriminate the spin-dependent gluon distributions and to determine the sign of Delta G is discussed. A detailed study of the expected background, such as pi(0) production and decay, is given. Predictions for the longitudinal asymmetry A(LL) of the prompt photons and pi(0)-meson production in the (p) over right arrow (p) over right arrow collisions at RHIC energies have been made.