W and Z production in pp collisions at 7 TeV with the ATLAS experimant at the LHC

Verena Ingrid Martinez Outschoorn

Research output: Contribution to conferencePaper

Abstract

The observation of W and Z bosons and a measurement of the production cross sections in proton proton collisions at ECM = 7 TeV are presented using data from the ATLAS experiment at the LHC. Results are based on 118 W→lv and 125 Z/γ*→ll (5 =e,μ) candidate events corresponding to an integrated luminosity of about 17 nb and 22 nb respectively. The measured values of oW x BR(W→lv) = 9.3 ± 0.9 (stat) ± 0.6 (syst) ± 1.0 (lumi) nb and σZ/γ* x BR(Z/γ*→ll, 66≤ma≤116) = 0.83 ± 0.07 (stat) ± 0.06 (syst) ± 0.09 (lumi) nb. A measurement of the W lepton charge asymmetry is also reported. A comparison with theoretical predictions based on NNLO QCD calculations shows agreement with the measurements.

Original languageEnglish (US)
StatePublished - Dec 1 2010
Event30th Physics in Collision Symposium, PIC 2010 - Karlsruhe, Germany
Duration: Sep 1 2010Sep 4 2010

Other

Other30th Physics in Collision Symposium, PIC 2010
CountryGermany
CityKarlsruhe
Period9/1/109/4/10

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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    Martinez Outschoorn, V. I. (2010). W and Z production in pp collisions at 7 TeV with the ATLAS experimant at the LHC. Paper presented at 30th Physics in Collision Symposium, PIC 2010, Karlsruhe, Germany.