2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/220427The precise measurement of the Higgs mass is the most important program at International Linear Collider (ILC). Using e+e- -> ZH process, the mass of Higgs boson can be measured by two lepton tracks from decay of Z boson, even if the Higgs boson decays into invisible particles. We report the measurement accuracy on the Higgs recoil mass and the cross sections for ZH -> llX at sqrt{s}=250 GeV with the integrated luminosity of 250 fb-1.4 pages, 2 figures, proceedings of LCWS08High Energy Physics - Phenomenologytext