| The effect of $\alpS(m_{\Z})$ variation. The NNLO theoretical cross section predictions using the NNPDF31NNLO PDF with $\mu=\HT$, calculated for different choices of \alpS (0.108, 0.110, 0.112, 0.114, 0.116, 0.117, 0.118, 0.119, 0.120, 0.122, and 0.124), are divided by the benchmark NNLO prediction for $\alpS = 0.118$ and the same choice of PDF set, $\mu_\mathrm{R}$, and $\mu_\mathrm{F}$. Also shown is the experimental unfolded measurement divided by the same benchmark prediction. The width of the unity line corresponds to the statistical uncertainty from the MC integration for the determination of the NNLO prediction. The error bars on the unfolded data correspond to the total experimental statistical and systematic uncertainty added in quadrature. |