On the way to prepare Run 2 and maximize our sensitivity to new physics in 2015, next WU are Z decays... Why ?
The Z boson has a long story at CERN. Discovered in 1984 by the UA1 and UA2 experiments, studied in great detail for a decade at LEP, it is now what we call a "standard candle" : its properties are so well known that it will allow us to "calibrate" the ATLAS detector and check the level of systematic errors.
For more informations and links, see the PARTICIPANT material item "how are physics results extracted ?"
STATUS : FINISHED, THANKS !