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Measurement of the transverse momentum distribution of Z/γ⁎ bosons in proton–proton collisions at √s=7 TeV with the ATLAS detector

CollaborationWith : Abdelalim Aly, Ahmed Aly / Alexandre, Gauthier / Backes, Moritz / Barone, Gaetano / Bell, Paul / Bell, William / Berglund, Frida Elina / Blondel, Alain / Bucci, Francesca / Clark, Allan Geoffrey / Dao, Valerio / Ferrere, Didier / Gadomski, Szymon / Garcia Navarro, Jose Enrique / Gaumer, Olivier / Gonzalez Sevilla, Sergio / Goulette, Marc / Hamilton, Andrew / Iacobucci, Giuseppe / Leger, Annie / Lister, Alison / Macina-Buono, Daniela / Martin Dit Latour, Bertrand / Mora Herrera, Maria Clemencia Rosario / Nektarijevic, Snezana / Nikolics, Katalin / Pasztor, Arpad / Pohl, Martin / Robichaud-Veronneau, Andrée / Rosbach, Kilian / Rosselet, Laurent / Wu, Xin
Published in Physics Letters. B. 2011, vol. 705, no. 5, p. 415-434
Abstract A measurement of the Z/γ⁎ transverse momentum (pTZ) distribution in proton–proton collisions at √s=7 TeV is presented using Z/γ⁎→e+e− and Z/γ⁎→μ+μ− decays collected with the ATLAS detector in data sets with integrated luminosities of 35 pb−1 and 40 pb−1, respectively. The normalized differential cross sections are measured separately for electron and muon decay channels as well as for their combination up to View the MathML sourcepTZ of 350 GeV for invariant dilepton masses 66 GeV<mℓℓ<116 GeV. The measurement is compared to predictions of perturbative QCD and various event generators. The prediction of resummed QCD combined with fixed order perturbative QCD is found to be in good agreement with the data.
Keywords Z bosonsDifferential cross sectionPerturbative QCDEvent generatorsMonte Carlo models
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ATLAS COLLABORATION. Measurement of the transverse momentum distribution of Z/γ⁎ bosons in proton–proton collisions at √s=7 TeV with the ATLAS detector. In: Physics Letters. B, 2011, vol. 705, n° 5, p. 415-434. https://archive-ouverte.unige.ch/unige:40911

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Deposited on : 2014-10-16

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