  New jet observables are defined which characterize both fractal and
scale-dependent contributions to the distribution of hadrons in a jet. These
infrared safe observables, named Extended Fractal Observables (EFOs), have been
applied to quark-gluon discrimination to demonstrate their potential utility.
The EFOs are found to be individually discriminating and only weakly correlated
to variables used in existing discriminators. Consequently, their inclusion
improves discriminator performance, as here demonstrated with particle level
simulation from the parton shower.
