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

TL;DR

This paper combines experimental Higgs search data with theoretical calculations and precision measurements within the Standard Model to estimate the probability distribution of the Higgs boson mass, providing key statistical bounds and expectations.

Contribution

It presents a comprehensive probabilistic analysis of the Higgs mass, integrating various data sources to refine mass constraints within the Standard Model framework.

Findings

Expected Higgs mass around 170 GeV

75% probability mass below 200 GeV

95% probability upper limit at approximately 300 GeV

Abstract

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.