Transversely polarized Drell-Yan process and soft gluon resummation in QCD

We calculate the transverse-momentum Q(T), spectrum of the dilepton in the transversely polarized Drell-Yan process on the basis of the factorization theorem in QCD. We take into account universal logarithmically enhanced corrections in edge region of phase space by resumming multiple soft-gluon emissions to all orders in the small Q(T) region.