Examining custodial symmetry in the Higgs sector of Georgi-Machacek model

TL;DR

This paper investigates how custodial symmetry affects Higgs bosons in the Georgi-Machacek model, focusing on their production, decay, and mass degeneracy tests at the LHC.

Contribution

It provides a detailed analysis of custodial symmetry implications for Higgs multiplets and proposes methods to test mass degeneracy at the LHC.

Findings

Mass degeneracy in Higgs multiplets can be tested at the LHC.

Production and decay channels of Higgs bosons are identified.

Custodial symmetry constraints influence Higgs boson properties.

Abstract

We study consequences of custodial symmetry in the Higgs sector of the Georgi-Machacek (GM) model. We discuss how the 5-plet and 3-plet Higgs bosons classified under the custodial SU(2) symmetry are produced and decay at the CERN Large Hadron Collider. By determining their masses through proposed channels, we can test the mass degeneracy in each Higgs multiplet.