Λc+ production in polarized pp scattering and polarized gluon distribution

To extract information about the polarized gluon distribution, ΔG(x,Q2), in the nucleons, we propose Λc+ productions in polarized pp scattering, p+p→→Λ→c++X, which will be observed at RHIC experiment starting soon. For this process, we have calculated the spin correlation differential cross section, dΔσ/dpT, and the spin correlation asymmetry defined by ALL≡[dΔσ/dpT]/[dσ/dpT]. We have found that the ALL is sensitive to the polarized gluon distribution in the nucleon and thus the process is promising for testing ΔG(x,Q2).