Measurement of the Low-Mass Drell-Yan Differential Cross Section at √s=7 TeV Using the ATLAS Detector

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Measurement of the Low-Mass Drell-Yan Differential Cross Section at √s=7 TeV Using the ATLAS Detector

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Title: Measurement of the Low-Mass Drell-Yan Differential Cross Section at √s=7 TeV Using the ATLAS Detector
Author(s):
Aad, G.;
Abajyan, T.;
Abbott, B.;
Abdallah, J.;
Khalek, S. Abdel;
Abdinov, O.;
Aben, R.;
Izen, Joseph M.;
Leyton, Michael;
Lou, Xinchou;
Namasivayam, Harisankar;
Reeves, Kendall;
ATLAS Collaboration
Date Created: 2014-06-18
Format: Text
Item Type: Article
Keywords: Muons
Hadrons--Scattering
Particles (Nuclear physics)
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.
Publisher: Springer
ISSN: 1029-8479
Source: Journal of High Energy Physics
Link to Related Resource: http://dx.doi.org/10.1007/JHEP06(2014)112
Persistent Link: http://hdl.handle.net/10735.1/3957
Bibliographic Citation: Aad, G., T. Abajyan, B. Abbott, J. Abdallah, et al. 2014. "Measurement of the low-mass Drell-Yan differential cross section at √s=7 TeV using the ATLAS detector." Journal of High Energy Physics: 6(112), doi:10.1007/JHEP06(2014)112
Terms of Use: CC BY 4.0 (Attribution)
©2014 CERN, for the ATLAS Collaboration

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