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Scientific article
Open access
English

Measurement of the low-mass Drell-Yan differential cross section at √s = 7 TeV using the ATLAS detector

ContributorsATLAS Collaboration
Published inThe journal of high energy physics, vol. 1406, p. 112-158
Collection
  • Open Access - SCOAP3
Publication date2014
Abstract

The differential cross section for the process Z / γ ∗ → ℓℓ ( ℓ = e, μ ) as a function of dilepton invariant mass is measured in pp collisions at √s = 7 TeV at the LHC using the ATLAS detector. The measurement is performed in the e and μ channels for invariant masses between 26 GeV and 66 GeV using an integrated luminosity of 1 . 6 fb −1 collected in 2011 and these measurements are combined. The analysis is extended to invariant masses as low as 12 GeV in the muon channel using 35 pb −1 of data collected in 2010. The cross sections are determined within fiducial acceptance regions and corrections to extrapolate the measurements to the full kinematic range are provided. Next-to-next-to-leading-order QCD predictions provide a significantly better description of the results than next-to-leading-order QCD calculations, unless the latter are matched to a parton shower calculation.

Keywords
  • Hadron-Hadron Scattering
Citation (ISO format)
ATLAS Collaboration. Measurement of the low-mass Drell-Yan differential cross section at √s = 7 TeV using the ATLAS detector. In: The journal of high energy physics, 2014, vol. 1406, p. 112–158. doi: 10.1007/JHEP06(2014)112
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Article (Published version)
Identifiers
ISSN of the journal1029-8479
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