Tracking for Pileup Mitigation and Phase-II ATLAS Upgrades
by
Douglas Michael Schaefer(CERN)
→
US/Pacific
Madrone (SLAC)
Madrone
SLAC
Description
The Large Hadron Collider (LHC) has delivered pp collisions to the ATLAS experiment, which has recorded 25/fb of 7-8TeV pp collisions and 39/fb of 13 TeV pp collisions. The increased instantaneous luminosity has come at a cost of higher average number of pp collisions per proton bunch crossing. However, the effects of pileup have been mitigated by using tracking as well as calorimeter information. From the measurement of H->WW in Run-1 to MET in Run-2, the use of tracking information and how it has been essential for particle identification and MET reconstruction will be discussed. Finally, developing the next generation of pixel detectors with High Resistivity CMOS technologies for the outer layers of the Phase-II ATLAS upgrade will be covered.