A diagram summarizing interactions between elementary particles according to the Standard Model. Vertices (dark ovals) represent types of particles, and edges (blue arcs) represent interactions between them. Multiple generations of types of particle (leptons, quarks) share an oval. An arc that links to a box is equivalent to a set of arcs that link to every oval in the box; this clarifies patterns and avoids clutter. The top row (leptons and quarks) are the matter particles; a second tier of vertices (photon, W/Z, gluons) are the force-mediating particles; and the Higgs boson is placed at the bottom.