Speaker
Description
I will present BARYONET, an open-source framework for computing the baryon asymmetry of the Universe within electroweak baryogenesis (EWBG). Starting from the semiclassical WKB approach, where spatially varying complex masses across expanding bubble walls generate CP-violating forces, we derive and solve the transport equations governing chemical potentials and velocity perturbations, leading to a quantitative prediction of the baryon asymmetry.
The framework is validated against established formalisms and applied to benchmark scenarios, including singlet extensions, Two-Higgs-Doublet Models, and Higgs–$\phi^6$ setups. Alongside the implementation, we provide an updated and transparent treatment of key EWBG ingredients such as diffusion constants, interaction rates, and sphaleron processes. BARYONET thus offers an automated, reproducible pipeline connecting theoretical derivations with collider and gravitational-wave phenomenology. I will also present preliminary results on the interplay between collider constraints and the regions of parameter space that yield the observed baryon asymmetry in singlet(s) extensions of the Standard Model.
Based on arxiv:2510.21915.
