Single-jet characteristics in\(\bar pp \to Z^0 ( \to \sum\limits_\nu {\nu \bar \nu } )\)+Jet+Anything.

We study the transverse momentum and. rapidity distributions of the high-pT single jet produced in\(\bar pp \to Z^0 ( \to \sum\limits_\nu {\nu \bar \nu } )\)+jet+anything and\(\bar pp \to Z^0 ( \to e^ + e^ - )\)+\ar jet+anything, adopting the standard model. Implication on counting the number of neutrino species from the data on monojet events is shortly discussed.