Single transverse spin asymmetry of dilepton production near Z0 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 4 < Q < 9 GeV and Q similar to M-Z in p(up arrow)p collisions at Relativistic Heavy Ion Collider energies. We find that the features of the asymmetry A(N) for Q similar to M-Z are significantly different from that when 4 < Q < 9 GeV. The A(N) near Z(0) pole is positive and sizable in the central rapidity region, while the A(N) at low Q is negative and only sizable in the forward rapidity region. We show that the size of A(N) is sufficiently large for a wide range of Q around the Z(0) pole, and even with the lepton pair's invariant mass integrated from Q = 70 GeV to 110 GeV, the A(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(0) pole, provide complementary information for testing the time-reversal modified universality (the sign change) of the Sivers functions.