  We study the exclusive flavor chancing neutral current process
Lambda(b)-->Lambda neutrino antineutrino in the leptophobic Z-prime model,
where charged leptons do not couple to the extra Z-prime boson. The branching
ratio, as well as, the longitudinal,transversal and normal polarizations are
calculated. It has been shown that all these physical observables are very
sensitive to the existence of new physics beyond the standard model and their
experimental measurements can give valuable information about it.
