What is quark model?

The quark model is a theory that describes elementary particles as composed of smaller subparticles called quarks. It was first proposed independently by Murray Gell-Mann and George Zweig in 1964.

Quarks are elementary particles that come in six types, known as flavors: up, down, charm, strange, top, and bottom. They also have a property called spin, which can be either up or down. Quarks are never found alone and are always found in combinations of two or three within protons, neutrons, and other hadrons.

The interaction between quarks is mediated by the strong nuclear force, which is the strongest of the four fundamental forces. This strong force binds the quarks together tightly inside a hadron, preventing them from being separated from each other.

The quark model has been very successful in explaining the properties of hadrons and has revolutionized our understanding of the subatomic world. It has led to the development of the theory of quantum chromodynamics (QCD), which is a branch of the Standard Model of particle physics.