Speaker
Oldrich Kepka
(Acad. of Sciences of the Czech Rep. (CZ))
Description
Particle distributions sensitive to the underlying event in calorimeter jet events have been measured with the ATLAS detector at the LHC. Charged particle multiplicity, charged and inclusive sum transverse momentum (pT) densities and mean charged-particle pT in the regions of each event, azimuthally transverse to the hardest jet, are also presented.
The underlying event properties are investigated for soft minimum bias events, events with hard jets and events associated with Z boson production. When compared to the predictions of different Monte Carlo models, the data show sensitivity to the modelling of the underlying event.
