Dark Matter and Electroweak Phase Transition in the Z₂ Symmetric Georgi-Machacek Model

2025/04/15 by Chih-Ting Lu, Yongcheng Wu, Lu, Chih-Ting +3 · 2 citations
Computer Science · Physics and Astronomy · #Computational Physics and Python Applications #Dark Matter and Cosmic Phenomena #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Particle physics theoretical and experimental studies

paper · pdf · doi:10.48550/arxiv.2504.10930

openalex publication_date 2025/04/15 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We present a comprehensive investigation of the Z₂ symmetric Georgi-Machacek (GM) model, focusing on the dark matter (DM) in the model and the electroweak phase transition (EWPT). Our analysis encompasses multiple detections for the DM candidates, including collider searches at the LHC and LEP, the direct detection and indirect detection. Furthermore, we also explore the possibility of a first-order EWPT in this framework. The gravitational wave (GW) generated from the first-order EWPT also provides a detection method for the parameter space in the Z₂ symmetric GM model providing viable DM candidate. It is found that the current DM searches, especially the direct detection, provide strong constraints on the parameter space, while the GW signal can be complementary around the Higgs resonant region.

Cited by

• Unified interpretation of 95 GeV di-photon and di-tau Excesses in the Georgi-Machacek Model
• Light Scalars in the Extended Georgi-Machacek Model

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