Perturbative unitarity for models with singlet and doublet scalars
Abstract
We provide a complete description of perturbative unitarity bounds on the gauge-scalar sectors of models with extra [Formula: see text] doublet, neutral singlet and charged singlet scalars. Such additions are very frequent in models beyond the Standard Model, and in particular, they are almost universal in models explaining the dark matter problem. We propose a specific classification and minimal set of scattering matrices containing all the relevant information. We also developed a Mathematica implementation of our results, BounDS, and we use it to fully study a number of simple cases, comparing with the literature, when available. The Mathematica notebook BounDS is provided via a public GitHub repository.
Fields of Study & Subjects
Particle physics theoretical and experimental studies
Quantum Chromodynamics and Particle Interactions
Cosmology and Gravitation Theories
Publication details
- Journal / source
- International Journal of Modern Physics A
- Publisher
- World Scientific Pub Co Pte Ltd
- Volume
- 41
- Issue
- 21
- Publication date
- 4 June 2026
- Language
- EN