QCD Prediction of ATT for Small QT Dimuon Production in pp and $pp Collisions
Hiroyuki Kawamura, Jiro Kodaira, Kazuhiro Tanaka
Abstract
We present QCD prediction of double-spin asymmetries (ATT) in transversely polarized Drell-Yan process at small transverse momentum QT of dimuon. Resummation of large logarithmic corrections, relevant in small QT region, is performed up to next-to-leading logarithmic (NLL) accuracy. ATT at RHIC, J-PARC and GSI are studied numerically in the corresponding kinematic regions.We show that the large ATT is obtained for small QT and moderate energies.
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