Speaker
Dr
Shinsuke Yoshida
(Los Alamos)
Description
We discuss the next-leading-order(NLO) transverse-momentum weighted single-transverse spin asymmetry in semi inclusive deep inelastic scattering based on the collinear factorization approach. The leading-order cross section can be expressed in terms of twist-3 functions associated with transverse momentum weighted TMD functions and therefore the NLO contribution provides scale evolution equations for them. We present our results of the evolution equations for Sivers type, Collins type and Sivers-fragmentation type contributions.
Primary author
Dr
Shinsuke Yoshida
(Los Alamos)
Co-authors
Dr
Hongxi Xing
(Northwestern University/ANL)
Prof.
Leonard Gamberg
(Penn State Berks)
Dr
Marc Schlegel
(University of Tubingen)
Dr
Zhongbo Kang
(Los Alamos National Laboratory)
