  We derive generating functions, valid to next-to-double logarithmic accuracy,
for QCD jet rates according to the inclusive forms of the kt, Cambridge/Aachen
and anti-kt algorithms, which are equivalent at this level of accuracy. We
compare the analytical results with jet rates and average jet multiplicities
from the SHERPA event generator, and study the transition between Poisson-like
and staircase-like behaviour of jet ratios.

High Energy Physics - Phenomenology