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Measurement of the low-mass Drell-Yan differential cross section at root s=7 TeV using the ATLAS detector
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
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Number of Authors: 2900
2014 (English)In: Journal of High Energy Physics (JHEP), ISSN 1126-6708, E-ISSN 1029-8479, no 6, 112- p.Article in journal (Refereed) Published
Abstract [en]

The differential cross section for the process Z/gamma* -> ll (l = e, mu) as a function of dilepton invariant mass is measured in pp collisions at root s = 7 TeV at the LHC using the ATLAS detector. The measurement is performed in the e and mu 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.

Place, publisher, year, edition, pages
2014. no 6, 112- p.
Keyword [en]
Hadron-Hadron Scattering
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-149305DOI: 10.1007/JHEP06(2014)112ISI: 000338528300001Scopus ID: 2-s2.0-84904283666OAI: oai:DiVA.org:kth-149305DiVA: diva2:738912
Funder
EU, European Research Council
Note

QC 20140819

Available from: 2014-08-19 Created: 2014-08-19 Last updated: 2017-12-05Bibliographically approved

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Strandberg, Jonas

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Jovicevic, JelenaKuwertz, EmmaLund-Jensen, BengtMorley, AnthonyStrandberg, Jonas
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