Affiliation:
1. Deutsche Elektronen-Synchrotron DESY
Abstract
We present a study of the LHC (and HL-LHC) potential towards a
precise determination of the gluon parton distribution function of the
proton at intermediate Bjorken-xx
from measurements of Drell-Yan production. To this extent, we exploit a
clean and theoretically well predicted observable: the Drell-Yan lepton
angular coefficient A_0A0,
associated with the longitudinal polarization of the Z boson. Through a
detailed numerical analysis using the open-source xFitter platform, we
illustrate how this observable can provide significant sensitivity over
current determinations of the gluon PDF, and a reduction in the PDF
uncertainty on the Higgs boson production cross-section by a factor of
over 50%.