A coarse two-bin ratio of Drell-Yan transverse momentum cross sections can determine the intrinsic kT width with sensitivity comparable to fine binned spectra, as shown by pseudo-data and CMS data.
Determination of the strong-coupling constant from the $Z$-boson transverse-momentum distribution
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The strong-coupling constant is determined from the low-momentum region of the transverse-momentum distribution of $Z$ bosons produced through the Drell-Yan process, using predictions at third order in perturbative QCD. The analysis employs a measurement performed in proton-proton collisions at a centre-of-mass energy of $\sqrt{s} = 1.96$ TeV with the CDF experiment. The determined value of the strong coupling at the reference scale corresponding to the $Z$-boson mass is $\alpha_S(m_Z) = 0.1191^{+0.0013}_{-0.0016}$.
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Coarse-grained binning in Drell-Yan transverse momentum spectra
A coarse two-bin ratio of Drell-Yan transverse momentum cross sections can determine the intrinsic kT width with sensitivity comparable to fine binned spectra, as shown by pseudo-data and CMS data.