Conveners
Performance: 1
- Peter Loch (University of Arizona (US))
Every bunch crossing at the LHC causes not just one proton-proton interaction, but several. These additional collisions are called "pileup". With the increasing luminosity of the LHC also the number of pileup interactions per bunch crossing increased in the past years and it will reach up to 140 during high-luminosity LHC operation. Removing the pileup from an event is essential, because it...
Jet and Missing transverse momentum (MET), used to infer the presence of high transverse momentum neutrinos or other weakly interacting neutral particles, are two of the most important quantities to reconstruct at a hadron collider. They are both used by many searches and measurements in ATLAS. New techniques combining calorimeter and tracker measurements, called Particle Flow and Unified...
Jet grooming is an important strategy for analyzing relativistic particle collisions in the presence of contaminating radiation. Most jet grooming techniques introduce hard cutoffs to remove soft radiation, leading to discontinuous behavior and associated experimental and theoretical challenges. In this talk, I introduce Pileup and Infrared Radiation Annihilation (PIRANHA), a paradigm for...
The global Feature Extractor (gFEX) is a level one hardware trigger system that is a component of the Phase I ATLAS trigger upgrades. The goal of the gFEX trigger design and implementation is to target global quantities like large radius jets, specifically those large radius jets with interesting substructure. The previous systems are not able to access a large enough area from the calorimeter...
