Beauty for pedestrians: Toy models for CP violation and baryon asymmetry

In this paper, toy models are presented which address: 1) How CPT and ΔI = 12 make life difficult in kaon physics by requiring equal K± total widths and also equal partial widths to many exclusive channels; 2) How to understand and get around CPT restrictions; 3) How CP asymmetries can occur in exclusive partial widths and still add up to equal total widths; 4) Sakharovʹs 1966 scenario for how CP violation and proton decay can explain baryon asymmetry; 5) How B physics can help.