2HDMs with Gauged U(1): Alive or Dead?
Published:Dec 29, 2025 13:16
•1 min read
•ArXiv
Analysis
This paper investigates Two Higgs Doublet Models (2HDMs) with an additional U(1) gauge symmetry, exploring their phenomenology and constraints from LHC data. The authors find that the simplest models are excluded by four-lepton searches, but introduce vector-like fermions to evade these constraints. They then analyze specific benchmark models (U(1)_H and U(1)_R) and identify allowed parameter space, suggesting future collider experiments can further probe these models.
Key Takeaways
Reference
“The paper finds that the minimum setup of these 2HDMs has been excluded by current data for four lepton searches at LHC. However, introducing vector-like fermions can avoid these constraints.”