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

Allison, Lee and Barton, Adam and Borissov, Guennadi and Bouhova-Thacker, Eva and Catmore, James and Chilingarov, Alexandre and Dearnaley, William and Fox, Harald and Grimm, Kathryn and Henderson, Robert and Hughes, Gareth and Jones, Roger William Lewis and Kartvelishvili, Vakhtang and Long, Robin and Love, Peter and Maddocks, Harvey and Smizanska, Maria and Walder, James (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:
Departments: Faculty of Science and Technology > Physics
ID Code: 71134
Deposited By: ep_importer_pure
Deposited On: 07 Oct 2014 09:53
Refereed?: Yes
Published?: Published
Last Modified: 26 Feb 2020 02:25
URI: https://eprints.lancs.ac.uk/id/eprint/71134

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