17-24 July 2013
KTH and Stockholm University Campus
Europe/Stockholm timezone

Measurement of W and Z boson production with the ATLAS detector

19 Jul 2013, 11:45
E1 (KTH Campus)


KTH Campus

Talk presentation QCD QCD


Alessandro Tricoli (CERN)


The production of the W and Z bosons is a standard candle process at the LHC. Precise total cross section measurements, in the fiducial region of the measurement and extrapolated to full phase space are presented. The differential Z/gamma∗ and the charge dependent W+ and W­ cross sections are provided in bins of boson rapidity and lepton pseudorapidity, respectively. The results are compared to Monte Carlo simulations and to predictions computed at NNLO QCD for different NNLO sets of parton distribution functions. A measurement of angular correlations in Drell–Yan lepton pairs for neutral current process via the phi* observable is also presented. This variable probes the same physics as the Z/gamma* boson transverse momentum (pT) with a better experimental resolution, especially for low transverse momenta. The measurement using phi* and the direct measurement of pT are compared to predictions based on QCD calculations and predictions from different Monte Carlo event generators.

Primary author

Uta Klein (University of Liverpool (GB))

Presentation Materials