Summarise the Standard Model of Particle Physics for an Expert

You know your way around a Lagrangian and you do not want the children's-museum version. This gives you a technically dense summary of the Standard Model: the gauge group, the full particle content with quantum numbers, symmetry breaking, the Higgs mechanism, and an honest list of what the model flatly cannot explain. For physicists, postgrads, and anyone past the popular-science stage.

Provide a technically dense but conceptually precise summary of the Standard Model of particle physics for an expert audience. Cover: the gauge symmetry group SU(3)×SU(2)×U(1), the particle content (fermions and bosons with their quantum numbers), the role of spontaneous symmetry breaking and the Higgs mechanism, and the forces mediated by gauge bosons. Explicitly state what the Standard Model does not explain: gravity, dark matter, neutrino masses, matter-antimatter asymmetry. Summarise the current experimental status and the most theoretically motivated extensions (e.g., SUSY, extra dimensions). Aim for a researcher in an adjacent field.