3 papers
hep-ph2026
Strong First-Order Electroweak Phase Transition and Gravitational Waves in a Fermion-Scalar Dark Matter Model
J. P. Carvalho-Corrêa, J. P. Cunha-Melo, I. M. Pereira +2
We investigate whether a minimal -symmetric fermion-scalar extension of the Standard Model can simultaneously realise viable dark matter, a strong electroweak phase t…
hep-ph2026
Mixed Freeze-In and Freeze-Out Histories and Dark-Sector Decays in a Two-Scalar Model
J. P. Carvalho-Corrêa, B. A. Couto e Silva, B. L. Sánchez-Vega
We present a systematic non-equilibrium analysis of a renormalisable Higgs-portal dark sector with a complex scalar and a real scalar , including conversi…
hep-ph2025
Theoretical and Experimental Constraints on Multi-Component Dark Matter Models
J. P. Carvalho-Corrêa, I. M. Pereira, B. L. Sánchez-Vega +1
A complete assessment of any dark matter model requires confronting its low-energy phenomenology with its high-scale theoretical viability. We undertake such a dual analysis for a…