Speaker
Ian Balitsky
(JLab/ODU)
Description
The Drell-Yan hadronic tensor for electromagnetic (EM) current in the Sudakov region $s\gg Q^2\gg q_\perp^2$ is obtained
with ${1\over Q^2}$ accuracy.
In the leading order in $N_c$ the higher-twist quark-quark-gluon TMDs reduce to
leading-twist TMDs due to QCD equation of motion. The resulting tensor for unpolarized hadrons is
EM gauge-invariant and depends on two leading-twist TMDs: $f_1$ responsible for total DY cross section,
and Boer-Mulders function $h_1^\perp$. The order-of-magnitude estimates of angular distributions for
DY process seem to agree with LHC results at corresponding kinematics.
Primary author
Ian Balitsky
(JLab/ODU)
