Speaker
Prof.
Di Ciaccio Anna
(University of Roma Tor Vergata and INFN)
Description
The large W and Z cross sections expected at the LHC allow for several measurements involving electroweak bosons already in the early data. The W and Z cross sections can be measured with good accuracy with 10-100 pb-1. These cross-sections are presently predicted with about 5% uncertainty. The ratio of W and Z cross-sections in particularis not affected by the uncertainty on the machine luminosity and will thus be one of the first tests of the detector and analysis chain performance. The Z momentum and rapidity distribution measurements will quickly surpass the predictions in precision, and thus
allow to constrain PDFs and QCD calculations. Also the W charge asymmetry will quickly become precisely measured. ATLAS strategies and expectations shall be discussed, using selected examples of expectations for measurements.
Primary author
Prof.
Di Ciaccio Anna
(University of Roma Tor Vergata and INFN)
