How to Put a Heavier Higgs on the Lattice

TL;DR

This paper uses the 1/N expansion to identify a lattice action that could allow for a heavier Higgs boson, suggesting the Higgs mass bound could be around 850 GeV, higher than previous estimates.

Contribution

It introduces a simple criterion for choosing lattice actions that better accommodate a heavy Higgs, based on large N calculations.

Findings

Higgs mass bound could be around 850 GeV

A criterion for lattice action selection is proposed

The bound is about 30% higher than previous estimates

Abstract

Lattice work, exploring the Higgs mass triviality bound, seems to indicate that a strongly interacting scalar sector in the minimal standard model cannot exist while low energy QCD phenomenology seems to indicate that it could. We attack this puzzle using the 1/N expansion and discover a simple criterion for selecting a lattice action that is more likely to produce a heavy Higgs particle. Our large $N$ calculation suggests that the Higgs mass bound might be around $850 GeV$, which is about 30% higher than previously obtained.