title: Gluon PDF constraints from the ratio of forward heavy-quark production at the LHC at [Formula: see text] and 13 TeV.
abstract: We discuss production of charm and bottom quarks at forward rapidity inppcollisions at the LHC, updating the QCD predictions for the run at [Formula: see text] TeV. We show that, while the absolute rates suffer from large theoretical systematics, dominated by scale uncertainties, the increase relative to the rates precisely measured at 7 TeV can be predicted with an accuracy of a few percent, sufficient to highlight the sensitivity to the gluon distribution function.
authors.affiliation: Université Paris Diderot, 75013 Paris, France.|Sorbonne Universités, UPMC Univ Paris 06, UMR 7589, LPTHE, 75005 Paris, France.|UMR 7589, LPTHE, CNRS, 75005 Paris, France.|PH-TH, CERN, 1211 Geneva, Switzerland.
authors.forename: Matteo
authors.initials: M
authors.lastname: Cacciari
authors.affiliation: PH-TH, CERN, 1211 Geneva, Switzerland.
authors.forename: Michelangelo L
authors.initials: ML
authors.lastname: Mangano
authors.affiliation: INFN, Sezione di Milano Bicocca, Piazza della Scienza 3, 20126 Milan, Italy.
authors.forename: Paolo
authors.initials: P
authors.lastname: Nason