Measurement of the low-mass Drell-Yan differential cross section at √s = 7 TeV using the ATLAS detector
Journal Article
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· Journal of High Energy Physics
- et al.
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.
- Research Organization:
- Brookhaven National Laboratory (BNL), Upton, NY (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- Contributing Organization:
- ATLAS Collaboration; The ATLAS collaboration
- Grant/Contract Number:
- AC02-05CH11231; AC02-98CH10886
- OSTI ID:
- 1166980
- Alternate ID(s):
- OSTI ID: 1523922
OSTI ID: 22572555
- Report Number(s):
- BNL--107289-2014-JA; KA1101021
- Journal Information:
- Journal of High Energy Physics, Journal Name: Journal of High Energy Physics; ISSN 1126-6708
- Publisher:
- Societa Italiana di PhysicaCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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Measurement of the low-mass Drell-Yan differential cross section at = 7 TeV using the ATLAS detector
Dataset
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Tue Apr 01 00:00:00 EDT 2014
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OSTI ID:1893323