The supersymmetric Georgi-Machacek model

• Published in: The journal of high energy physics Vol. 2018; no. 3; pp. 1 - 28
• Main Authors: Vega, Roberto, Vega-Morales, Roberto, Xie, Keping
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.03.2018; Springer Nature B.V; Springer Berlin; SpringerOpen
• Subjects: Automobile industry; Classical and Quantum Gravitation; Electroweak model; Elementary Particles; High energy physics; Physics; Physics and Astronomy; PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Quantum Field Theories; Quantum Field Theory; Quantum Physics; Regular Article - Theoretical Physics; Relativity Theory; String Theory; Supersymmetry; Supersymmetry Phenomenology; Supersymmetry Phenomenology
• ISSN: 1029-8479; 1029-8479
• DOI: 10.1007/JHEP03(2018)168

A bstract We show that the well known Georgi-Machacek (GM) model can be realized as a limit of the recently constructed Supersymmetric Custodial Higgs Triplet Model (SCTM) which in general contains a significantly more complex scalar spectrum. We dub this limit of the SCTM, which gives a weakly coupled origin for the GM model at the electroweak scale, the Supersymmetric GM (SGM) model. We derive a mapping between the SGM and GM models using it to show how a supersymmetric origin implies constraints on the Higgs potential in conventional GM model constructions which would generically not be present. We then perform a simplified phenomenological study of diphoton and ZZ signals for a pair of benchmark scenarios to illustrate under what circumstances the GM model can mimic the SGM model and when they should be easily distinguishable.