Measurement of the double-differential high-mass Drell-Yan cross section in pp collisions at $$ \sqrt{s}=8 $$ TeV with the ATLAS detector
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https://doi.org/10.1007/JHEP08(2016)009Metadata
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ATLAS Collaboration. 2016. Measurement of the Double-Differential High-Mass Drell-Yan Cross Section in Pp Collisions at $$ \sqrt{s}=8 $$ TeV with the ATLAS Detector. J. High Energ. Phys. 8. doi:10.1007/jhep08(2016)009.Abstract
This paper presents a measurement of the double-differential cross section for the Drell–YanZ/γ∗ → `
+
`
−
and photon-induced γγ → `
+
`
− processes where ` is an electron or muon. The
measurement is performed for invariant masses of the lepton pairs, m``, between 116 GeV
and 1500 GeV using a sample of 20.3 fb−1 of pp collisions data at centre-of-mass energy of
√
s = 8 TeV collected by the ATLAS detector at the LHC in 2012. The data are presented
double differentially in invariant mass and absolute dilepton rapidity as well as in invariant
mass and absolute pseudorapidity separation of the lepton pair. The single-differential cross
section as a function of m`` is also reported. The electron and muon channel measurements
are combined and a total experimental precision of better than 1% is achieved at low m``.
A comparison to next-to-next-to-leading order perturbative QCD predictions using several
recent parton distribution functions and including next-to-leading order electroweak effects
indicates the potential of the data to constrain parton distribution functions. In particular, a
large impact of the data on the photon PDF is demonstrated.
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