Clark, Brian LeeFranklin, MelissaHuth, JohnIppolito, ValerioLazovich, TomoLopez Mateos, DavidMercurio, KevinMorii, MasahiroSpearman, WilliamSun, SiyuanTolley, EmmaTuna, AlexanderYen, AndyZambito, Stefano2017-09-062016ATLAS Collaboration. 2016. “Measurement of the transverse momentum and ϕ∗η distributions of Drell–Yan lepton pairs in proton–proton collisions at √s=8 TeV with the ATLAS detector.” The European Physical Journal C 76 (5) (May). doi:10.1140/epjc/s10052-016-4070-4.1434-6044http://nrs.harvard.edu/urn-3:HUL.InstRepos:33839901Distributions of transverse momentum p T and the related angular variable φ ∗ η of Drell–Yan lepton pairs are measured in 20.3 fb−1 of proton–proton collisions at √ s = 8 TeV with the ATLAS detector at the LHC. Measurements in electron-pair and muon-pair final states are corrected for detector effects and combined. Compared to previous measurements in proton–proton collisions at √ s = 7 TeV, these new measurements benefit from a larger data sample and improved control of systematic uncertainties. Measurements are performed in bins of lepton-pair mass above, around and below the Z-boson mass peak. The data are compared to predictions from perturbative and resummed QCD calculations. For values of φ ∗ η < 1 the predictions from the Monte Carlo generator ResBos are generally consistent with the data within the theoretical uncertainties. However, at larger values of φ ∗ η this is not the case. Monte Carlo generators based on the parton-shower approach are unable to describe the data over the full range of p T while the fixed-order prediction of Dynnlo falls below the data at high values of p T . ResBos and the parton-shower Monte Carlo generators provide a much better description of the evolution of the φ ∗ η and p T distributions as a function of lepton-pair mass and rapidity than the basic shape of the data.en-USJournal Article2017-09-0610.1140/epjc/s10052-016-4070-4