Perturbative $T$-odd asymmetries in the Drell-Yan process revisited
Perturbative $T$-odd asymmetries in the Drell-Yan process revisited
We calculate the perturbative $T$-odd contributions to the lepton angular distribution in the Drell-Yan process. Using collinear factorization, we work at the first order in QCD perturbation theory where these contributions appear, ${\cal O}(\alpha_s^2)$, and address both $W^\pm$ and $\gamma/Z^0$ boson exchange. A major focus of our calculation is on …