1. The ATLAS Experiment at the LHC
Exploring the high-Energy Frontier of Particle Physics
University of Tokyo, 25th January 2007 (P. Jenni, CERN)
University of Tokyo, Jan-2007, P. Jenni (CERN)

2. Search for Extra-dimensions
University of Tokyo, Jan-2007, P. Jenni (CERN)

3. Warped Extra-dimensions (Randall-Sundrum models):
production of narrow Graviton resonances
Best discovery channel :
qq, gg  G  e+e-
spin =2
ATLAS, 1 year at 1034
Spin 1, e.g. Z’
University of Tokyo, Jan-2007, P. Jenni (CERN)

4. If theories with Extra-dimensions are true, mini black holes could be
abundantly produced and observed at the LHC.
Simulation of a black hole
event with MBH ~ 8 TeV in
ATLAS
They decay immediately
through Stephen Hawking
radiation
University of Tokyo, Jan-2007, P. Jenni (CERN)

5. Conclusions
The LHC construction is on track for first collisions end of 2007, and for
starting operation at design energy in 2008
Many important milestones have been passed in the construction,
pre-assembly, integration and installation of the ATLAS detector
Very major software, computing and physics preparation activities are
underway as well, using the Worldwide LHC Computing Grid (WLCG) for
distributed computing resources
The LHC at CERN and ATLAS will open a new era of particle physics,
exploring for the first time directly the TeV mass scale
 The coming years will certainly be very exciting!
(Informal news on ATLAS is available in the ATLAS eNews letter at
University of Tokyo, Jan-2007, P. Jenni (CERN)