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Title

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

CollaborationWith : Alexandre, Gauthier / Barone, Gaetano / Bell, Paul / Bell, William / Benhar Noccioli, Eleonora / Bilbao De Mendizabal, Javier / Bucci, Francesca / Camacho Toro, Reina / Clark, Allan Geoffrey / Delitzsch, Chris Malena / Della Volpe, Domenico / Doglioni, Caterina / Ferrere, Didier / Gadomski, Szymon / Gonzalez Sevilla, Sergio / Goulette, Marc / Gramling, Johanna Léna / Guescini, Francesco / Iacobucci, Giuseppe / Katre, Akshay / La Rosa, Alessandro / Mermod, Philippe / Miucci, Antonio / Muenstermann, Daniel / Nektarijevic, Snezana / Nikolics, Katalin / Pásztor, G. / Picazio, Attilio / Pohl, Martin / Rosbach, Kilian / Vallecorsa, Sofia / Wu, Xin
Published in Journal of High Energy Physics. 2014, vol. 1406, p. 112-158
Collection Open Access - SCOAP3
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.
Keywords Hadron-Hadron Scattering
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arXiv: 1404.1212
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ATLAS COLLABORATION. Measurement of the low-mass Drell-Yan differential cross section at √s = 7 TeV using the ATLAS detector. In: Journal of High Energy Physics, 2014, vol. 1406, p. 112-158. https://archive-ouverte.unige.ch/unige:55796

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Deposited on : 2015-04-27

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