Speaker
Dr
Federico Meloni
(University of Milano and INFN)
Description
The track and vertex reconstruction algorithms of the ATLAS Inner Detector
have demonstrated excellent performance in the early data from the LHC.
However, the rapidly increasing number of interactions per bunch crossing introduces
new challenges both in computational aspects and physics performance.
The combination of both silicon and gas based detectors provides high precision impact parameter
and momentum measurement of charged particles, with high efficiency and small fake rate.
Vertex reconstruction is used
to identify with high efficiency the hard scattering process
and to measure the amount of pile-up interactions, both aspects are crucial for many
physics analyses.
The performance of track and vertex reconstruction efficiency and resolution achieved in the 2011
data-taking period and perspectives for the 2012 data-taking, were improved algorithms will be used
to are presented.
for the collaboration
ATLAS Collaboration
Primary authors
Andreas Salzburger
(CERN)
Attilio Andreazza
(INFN - Milano)
