On the W mass and new Higgs bosons

We discuss the prediction of the W boson mass in a simple extension of the Standard Model (Sigma SM) with a real scalar triplet. A shift in the W mass as reported by the CDF II collaboration can naturally be accommodated by the model without modifying the Standard Model value for the Z mass. We discuss the main implications and the properties of the new Higgs bosons. Namely, the partial decay widths of the new charged Higgs are predicted. Furthermore, the neutral Higgs has suppressed couplings to fermions and decays predominantly into a pair of W gauge bosons. (C) 2022 The Author(s). Published by Elsevier B.V.

Automated summary

This article discusses the prediction of the W boson mass in a simple extension of the Standard Model, specifically with a real scalar triplet. The model can naturally accommodate the reported shift in the W mass without modifying the Standard Model value for the Z mass. The article also explores the implications and properties of the new Higgs bosons, including the predicted partial decay widths of the new charged Higgs and the dominant decay of the neutral Higgs into a pair of W gauge bosons.