Speaker
Description
The High Luminosity-Large Hadron Collider is expected to start in
2027 and to provide an integrated luminosity of 3000 fb-1 in ten year,
about a factor 20 more than what was collected so far. This high
statistics will allow to perform precise measurements in the Higgs sector and
improve searches of new physics at the TeV scale.
The luminosity needed is L ~7.5 1034 cm-2 s-1, correspondent to
~200 additional proton-proton pile-up interactions, which can
significantly degrade the reconstruction performances.
To face such harsh environment some sub-detectors of the ATLAS
experiment will be upgraded or completely substituted.
The current Inner Detector will be replaced with a new all-silicon
Inner Tracker (ITk) designed to face the challenging environment
associated with the high number of collisions per bunch crossing.
In this poster an overview of the ITk performance to reconstruct and
identify high-level objects will be shown.
A particular focus will be given to the pile-up jets tagging and the
impact of the spatial density of the number of collisions per bunch
crossing.
| Collaboration | ATLAS |
|---|
