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

, The ATLAS collaboration (2014) Measurement of the low-mass Drell-Yan differential cross section at s√ = 7 TeV using the ATLAS detector. Journal of High Energy Physics, 2014 (6). ISSN 1029-8479

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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.

Item Type:
Journal Article
Journal or Publication Title:
Journal of High Energy Physics
Additional Information:
The original publication is available at www.link.springer.com JHEP is an open-access journal funded by SCOAP3 and licensed under CC BY 4.0
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3100/3106
Subjects:
ID Code:
71134
Deposited By:
Deposited On:
07 Oct 2014 09:53
Refereed?:
Yes
Published?:
Published
Last Modified:
24 Oct 2020 03:10