Constraints on the Higgs Boson Mass from Direct Searches and Precision Measurements

G. D'Agostini, G. Degrassi

Published 1999-02-02Version 1

We combine, within the framework of the Standard Model, the results of Higgs search experiments with the information coming from accurate theoretical calculation and precision measurements to provide a probability density function for the Higgs mass, from which all numbers of interest can be derived. The expected value is 170 GeV, with an expectation uncertainty, quantified by the standard deviation of the distribution, of about 80 GeV. The median of the distribution is 150 GeV, while 75 % of the probability is concentrated in the region $M_H \leq 200$ GeV. The 95 % probability upper limit comes out to be around 300 GeV.