People outside the scientific community call Higgs Boson as God Particle due to Leon Lederman’s book The God Particle where he calls Higgs Boson a God Particle. Nobody knows why this Nobel prize winner has done such an idiotic thing but it seems like Leon M. Lederman was more interested in the promotion of his book rather than explaining particle physics.
Although he explains his ploy by saying that he gave Higgs Boson the nickname “God Particle” for this, this and this reason but what you see on the cover is misleading language of Leon M. Lederman with Dick Teresi.