Predictions for Drell-Yan \phi* and Q_T observables at the LHC

TL;DR

This paper provides theoretical predictions for the * variable and the transverse momentum Q_T in Drell-Yan processes at the LHC, showing good agreement with experimental data and encouraging future measurements.

Contribution

It introduces theoretical predictions for the * variable and compares perturbative estimates of Q_T with LHC data, aiding future experimental efforts.

Findings

Good agreement between Q_T predictions and ATLAS/CMS data

Predictions for * can stimulate new measurements at the LHC

Theoretical framework supports analysis of Drell-Yan observables

Abstract

We make theoretical predictions for the recently introduced variable \phi* corresponding to the azimuthal angle between leptons produced in the Drell-Yan process at the LHC. As a consequence of this work we are also able to generate results for the more commonly studied transverse momentum Q_T of the lepton pair. Comparisons of these purely perturbative estimates for the Q_T case yield good agreement with ATLAS and CMS data, as we demonstrate. We anticipate that this work will help stimulate measurements of \phi* at the LHC.