In:
The European Physical Journal C, Springer Science and Business Media LLC, Vol. 80, No. 7 ( 2020-07)
Abstract:
This paper describes precision measurements of the transverse momentum $$p_\mathrm {T}^{\ell \ell }$$ p T ℓ ℓ ( $$\ell =e,\mu $$ ℓ = e , μ ) and of the angular variable $$\phi ^{*}_{\eta }$$ ϕ η ∗ distributions of Drell–Yan lepton pairs in a mass range of 66–116 GeV. The analysis uses data from 36.1 fb $$^{-1}$$ - 1 of proton–proton collisions at a centre-of-mass energy of $$\sqrt{s}=13\,$$ s = 13 TeV collected by the ATLAS experiment at the LHC in 2015 and 2016. Measurements in electron-pair and muon-pair final states are performed in the same fiducial volumes, corrected for detector effects, and combined. Compared to previous measurements in proton–proton collisions at $$\sqrt{s}=7$$ s = 7 and $$8\,$$ 8 TeV, these new measurements probe perturbative QCD at a higher centre-of-mass energy with a different composition of initial states. They reach a precision of 0.2 $$\%$$ % for the normalized spectra at low values of $$p_\mathrm {T}^{\ell \ell }$$ p T ℓ ℓ . The data are compared with different QCD predictions, where it is found that predictions based on resummation approaches can describe the full spectrum within uncertainties.
Type of Medium:
Online Resource
ISSN:
1434-6044
,
1434-6052
DOI:
10.1140/epjc/s10052-020-8001-z
Language:
English
Publisher:
Springer Science and Business Media LLC
Publication Date:
2020
detail.hit.zdb_id:
1397769-6
detail.hit.zdb_id:
1459069-4
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