Search for metastable heavy charged particles with large ionization energy loss in pp collisions at $\sqrt{s} = 13$ TeV using the ATLAS experiment

Understand

This paper presents a search for massive charged long-lived particles produced in pp collisions at $\sqrt{s}=$ 13 TeV at the LHC using the ATLAS experiment.

• The dataset used corresponds to an integrated luminosity of 3.2 fb$^{-1}$.
• Many extensions of the Standard Model predict the existence of massive charged long-lived particles, such as $R$-hadrons.
• These massive particles are expected to be produced with a velocity significantly below the speed of light, and therefore to have a specific ionization higher than any Standard Model particle of unit charge at high momenta.