A Search for Long-Lived, Charged, Supersymmetric Particles using Ionization with the ATLAS Detector
Several extensions of the Standard Model predict the existence of charged, very
massive, and long-lived particles. Because of their high masses these particles
would propagate non-relativistically through the ATLAS pixel detector and would
therefore be identifiable through a measurement of large specific energy loss.
Measuring heavy, long-lived particles through their track parameters in the pixel
detector allows sensitivity to particles with lifetimes in the nanosecond range
and above. This dissertation presents an inner detector driven method for identifying
such particles in proton-proton collisions at 13 TeV with the 2015 LHC
dataset corresponding to an integrated luminosity of 3.5 pb−1.