Single transverse spin asymmetry of dilepton production near Z{sup 0} pole

Using the latest quark Sivers functions extracted from the global analysis of available data on single transverse spin asymmetry (SSA), we calculate the SSA of Drell-Yan inclusive production of lepton pairs of invariant mass Q at both 4Relativistic Heavy Ion Collider energies. We find that the features of the asymmetry A{sub N} for Q{approx}M{sub Z} are significantly different from that when 4invariant mass integrated from Q=70 GeV to 110 GeV, the A{sub N} is still close to 10% for the central and near forward rapidity region. We argue that the SSAs of Drell-Yan inclusive dilepton production at low Q, and that near the Z{sup 0} pole, provide complementary information for testing the time-reversal modified universality (the sign change) of the Sivers functions.