Conveners
Morning 4 - Particle Physics
- Heather Russell (University of Victoria)
Description
Experimental techniques, reconstruction and performance in experimental particle physics
Collimated beams of particles called ‘jets’ are a common product of proton-proton collisions at the Large Hadron Collider (LHC), located in CERN, Geneva. These jets are crucial for many standard model and beyond the standard model analyses performed with the ATLAS detector and as such, having the correct calibration and uncertainties for these objects is incredibly important. A large component...
The ATLAS detector is a general purpose detector at the Large Hadron Collider (LHC) that investigates a variety of physics, ranging from Higgs boson to possible particles that make up of dark matter. The LHC will be upgraded to become High-Luminosity LHC (HL-LHC) at the end of this decade, and in subsequent run periods a high-pileup environment resulting in up to 200 events per proton-proton...
The ATLAS experiment at the Large Hadron Collider (LHC) records events with energies up to 13TeV using multiple complementary detectors. As a general-purpose detector, ATLAS employs a highly sophisticated software system to reconstruct events for a variety of analyses. These analyses encompass many orders of magnitude of energy and momentum requiring accurate reconstruction at all energy...
In order to perform searches for high-precision measurements and searches for new phenomena, experiments must account for differences between simulation and collected data. The LHC collects a huge amount of data every second, but only some of it is useful for various kinds of analyses. One way of filtering out useful events is by the usage of a sophisticated triggering system. In order to...
Our ATLAS analysis group is performing a search in proton-proton collisions at the LHC for $H^{\pm} \rightarrow W^{\pm}Z$ and $H^{\pm\pm} \rightarrow W^{\pm}W^{\pm}$ produced via vector boson fusion with a fully leptonic final state. This process can be imitated by many other events produced at ATLAS, such as QCD and EW processes with W and Z bosons in the final state. Thus, this analysis...
There is currently an abundance of astrophysical evidence suggesting the existence of extra mass in the universe whose particle constituents cannot be explained by the Standard Model. Numerous theories were derived in an attempt to provide potential particle candidates for dark matter which are searched for by direct and indirect experiments. However, instead of focusing on finding a dark...
Electron charge misidentification constitutes the most significant background in the ee decay channel and the third-largest background in the all-inclusive dileptonic channel in the ATLAS measurement of electroweak production of same-sign WW boson pairs in proton-proton collisions. Electrons in the ee channel are produced with well-defined opposite charges, making it an excellent process for...
