What is the limit on the Higgs mass?

TL;DR

This paper derives bounds on dimension-6 operators affecting electroweak precision tests, providing constraints that influence the possible upper limit on the Higgs mass, especially around 100 GeV.

Contribution

It systematically analyzes gauge invariant, flavour symmetric, CP-even dimension-6 operators and establishes new, often stronger bounds relevant for Higgs mass limits.

Findings

Bounds on operators range from 2 to 10 TeV.

Limits are often stronger than previous literature.

Implications for the Higgs mass upper limit are discussed.

Abstract

We obtain the bounds on all the gauge invariant, flavour symmetric, CP-even operators of dimension 6 that can affect the electroweak precision tests. For the preferred Higgs mass of about 100 GeV, their minimal scales range from 2 to 10 TeV. Depending on the individual operator, these limits are often significantly stronger than those quoted in the literature, when they exist at all. The impact, if any, of these bounds on the upper limit con the Higgs mass itself is discussed.