Measurement of $WZ$ production in proton-proton collisions at $\\sqrts=7$ TeV with the ATLAS detector
Journal
European Physical Journal
Journal Volume
C72
Pages
2173
Date Issued
2012
Author(s)
Aad, Georges et al. (The ATLAS Collaboration)
Abstract
A study of W Z production in proton-proton collisions at s = 7 TeV is presented using data corresponding to an integrated luminosity of 4.6 fb -1 collected with the ATLAS detector at the Large Hadron Collider in 2011. In total, 317 candidates, with a background expectation of 68 10 events, are observed in double-leptonic decay final states with electrons, muons and missing transverse momentum. The total cross-section is determined to be tot W Z = 19.0 +1.4 -1.3 (stat.) 0.9(syst.) 0.4(lumi.) pb, consistent with the Standard Model expectation of 17.6 +1.1 -1.0 pb. Limits on anomalous triple gauge boson couplings are derived using the transverse momentum spectrum of Z bosons in the selected events. The cross-section is also presented as a function of Z boson transverse momentum and diboson invariant mass.
Type
journal article