Q_T and ф~* observables in Drell-Yan processes

摘要

We describe results on the phenomenology of electro-weak bosons produced in hadron-hadron collisions. In particular, we discuss the ф~* variable, which enables us to probe the low-transverse-momentum region of lepton pairs produced via the Drell-Yan mechanism with unprecedented experimental accuracy. We describe state-of-the-art theoretical calculations for ф~* and their comparison to Tevatron and LHC data.