Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
2010-10-31
Physics
High Energy Physics
High Energy Physics - Experiment
4 pages, 7 figures. Proceedings of XXX. Physics in Collision 2010, Karlsruhe, Germany, September 2010
Scientific paper
The observation of W and Z bosons and a measurement of the production cross sections in proton proton collisions at E_CM = 7 TeV are presented using data from the ATLAS experiment at the LHC. Results are based on 118 W -> lnu and 125 Z/gamma* -> ll (l=e,mu) candidate events corresponding to an integrated luminosity of about 17 nb^-1 and 225 nb^-1 respectively. The measured values of sigma_W x BR(W -> lnu) = 9.3 \pm 0.9 (stat) \pm 0.6 (syst) \pm 1.0 (lumi) nb and sigma_Z/gamma* x BR(Z/gamma* -> ll, 66
for the ATLAS Collaboration
Outschoorn Verena Martinez
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