Theory of particle physics based on Yang–Mills theory with gauge group SU×SU×U and spontaneous symmetry breaking
The Standard Model of particle physics is the theory describing three of the four known fundamental forces (the electromagnetic, weak, and strong interactions while omitting gravity) in the universe and classifying all known elementary particles. It was developed in stages throughout the latter half of the 20th century, through the work of many scientists worldwide, with the current formulation be... Wikipedia