Using Drell-Yan forward-backward asymmetry to reduce PDF uncertainties in the measurement of electroweak parameters
arXiv:1507.02470 · doi:10.1140/epjc/s10052-016-3958-3
Abstract
The uncertainties in Parton Distribution Functions (PDFs) are the dominant source of the systematic uncertainty in precision measurements of electroweak parameters at hadron colliders (e.g. $\sin^2θ_{eff}(M_Z)$, $\sin^2θ_{W}=1-M_W^2/M_Z^2$ and the mass of the W boson). We show that measurements of the forward-backward charge asymmetry ($A_{FB}(M,y)$) of Drell-Yan dilepton events produced at hadron colliders provide a new powerful tool to reduce the PDF uncertainties in these measurements.
12 pages, 10 Figures, 4 Tables Accepted for publication in EPJC Feb. 2016