What Is a Model Audit?
In particle physics, the Standard Model ( SM ) is a set of theories that describe the three basic forces of strong, weak, and electromagnetic forces and the basic particles that make up all matter. It belongs to the category of quantum field theory and is compatible with quantum mechanics and special relativity. So far, the results of almost all experiments on the above three forces are in line with the predictions of this theory. But the standard model is not yet a universal theory, mainly because it does not describe gravity.
- It is generally believed that the initial study of the standard model was the electric-weak interactions discovered by Sheldon Glassau in 1960. In 1967,
- The standard model contains a total of 61 basic particles (see table).
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- Although the standard model is very successful in interpreting the experimental results, it also has major flaws. First, the model includes many parameters, such as the mass of each particle and the strength of each interaction. These numbers cannot be derived solely from calculations, but must be determined experimentally. There is no satisfactory explanation for weak current symmetry breaking. Again, there are so-called natural issues in the theory. Finally, this theory fails to describe
- Main topics : unresolved physics problems, grand unification theory, universal theory, cosmology, non-standard cosmology, physics, history of physics, science policy
- Theoretical physics : string theory, gauge theory
- Particle physics : photons, electrons, elementary particles, canonical bosons, flavors, muons, neutrons, neutrinos, Higgs bosons, baryon number, lepton number, solar neutrino problem, photoneutrino
- Concepts : supersymmetry, basic interactions, fine structure constants
- Important experiments : neutron electric dipole moment, toroidal instrument, large ion collider experiment