Abstract
Confined quarks and gluons from the proton-proton scattering manifest
themselves as groups of collimated particles in the final state. The
particles are clustered into physically measurable objects at hadron
colliders: these objects are called jets. In this seminar, I will discuss
the jet reconstruction and jet energy calibration techniques used in ATLAS.
I will review the performance of jets over this last year using sqrt(s)=13
TeV collisions data collected during the Run-2 of the LHC, as well as the
first Run-2 results in which jet performance plays a crucial role.