title: QCD resummation for single spin asymmetries.
abstract: We study the transverse momentum dependent factorization for single spin asymmetries in Drell-Yan and semi-inclusive deep inelastic scattering processes at one-loop order. The next-to-leading order hard factors are calculated in the Ji-Ma-Yuan factorization scheme. We further derive the QCD resummation formalisms for these observables following the Collins-Soper-Sterman method. The results are expressed in terms of the collinear correlation functions from initial and/or final state hadrons coupled with the Sudakov form factor containing all order soft-gluon resummation effects. The scheme-independent coefficients are calculated up to one-loop order.
authors: RIKEN/BNL Research Center, Building 510A, Brookhaven National Laboratory, Upton, New York 11973, USA.
authors: Zhong-Bo
authors: ZB
authors: Kang
authors: Bo-Wen
authors: BW
authors: Xiao
authors: Feng
authors: F
authors: Yuan