Fig. 2.
The "Δχ2" curve derived from high-Q2 precision electroweak measurements, performed at LEP and by SLD, CDF, and D0, as a function of the Higgs-boson mass, assuming the Standard Model to be the correct theory of nature. The yellow area is excuded by the non-production of the Higgs.
Image credit: LEP Electroweak Working Group.