Constraining the Higgs boson mass through the combination of direct search and precision measurement results

Abstract

We show that the likelihood ratio of Higgs search experiments is a form to report the experimental results suitable to be combined with the information from precision measurements to obtain a joint constraint on the Higgs mass. We update our previous combined analysis using the new results on direct searches and recent precision measurements, including also the Z0 leptonic partial width result. The method is also improved to take into account small non linearity effects in the theoretical formulae. We find an expected value for the Higgs mass around 160-170 GeV with an expectation uncertainty, quantified by the standard deviation of the distribution, of about 50-60 GeV. The 95% probability upper limit comes out to be around 260-290 GeV.