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MPP Colloquium
First results from the ATLAS experiment at the new energy frontier LHC
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Europe/Berlin
Auditorium
Auditorium
Description
In 2010 the energy frontier in hadron-hadron collisions has moved to Europe, with the
Large Hadron Collider (LHC) at CERN providing proton-proton collisions at a center-of-mass
energy of 7 TeV. The general purpose experiment ATLAS has recorded data corresponding
to an integrated luminosity of about 45/pb.
At the early stages of the LHC physics program, the emphasis lies on the understanding of
the detailed properties of proton-proton-interactions in this new kinematic regime, and the
qualification of the performance of the experiments as well as the refinement of alignment
and calibration of the detectors using data driven methods. This is mandatory to lay solid
foundations for searches at the LHC on new physics process beyond the well established
Standard Model of particle physics.
An overview of the first physics results obtained by ATLAS will be presented. The
steps taken to 'rediscover' the Standard Model will be described, with a special emphasis
on the observation and measurement of jets, of W and Z bosons as well as of the top quark.
Complimentary studies on softer particle production in hard scattering processes will be
discussed as well. Finally, first results on searches for physics process beyond the Standard
Model will be briefly summarized.