QCD Prediction of A TT for Small Q T Dimuon Production in pp and $p\bar{p} Collisions
Abstract
We present QCD prediction of double-spin asymmetries (
A
TT
) in transversely polarized Drell-Yan process at small transverse momentum
Q
T
of dimuon. Resummation of large logarithmic corrections, relevant in small
Q
T
region, is performed up to next-to-leading logarithmic (NLL) accuracy.
A
TT
at RHIC, J-PARC and GSI are studied numerically in the corresponding kinematic regions.We show that the large
A
TT
is obtained for small
Q
T
and moderate energies.