Measurement of the $W W$ cross section in $\\sqrts=7$ TeV $pp$ collisions with ATLAS
Journal
Physical Review Letters
Journal Volume
107
Pages
041802
Date Issued
2011
Author(s)
Aad, Georges et al. (The ATLAS Collaboration)
Abstract
This Letter presents a measurement of the W+ W- production cross section in sqrt(s) = 7 TeV pp collisions by the ATLAS experiment, using 34 pb(-1) of integrated luminosity produced by the Large Hadron Collider at CERN. Selecting events with two isolated leptons, each either an electron or a muon, 8 candidate events are observed with an expected background of 1.7 ± 0.6 events. The measured cross section is 41(-16)(+20)(stat) ± 5(syst)±1(lumi) pb, which is consistent with the standard model prediction of 44 ± 3 pb calculated at next-to-leading order in QCD.
Type
journal article