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This discovery established quantum chromodynamics (QCD) as the correct theory of the strong nuclear force, one of the four fundamental forces in Nature.
electro-magnetism, strong nuclear force, and weak nuclear force) with their postulated universal effect of gravity.
In lighter-weight elements, protons and neutrons stick together because of the attractive power of the strong nuclear force.
The fundamental physical constants also demonstrate fine-tuning: had the weak and strong nuclear forces, electromagnetic force, or electron charge been minutely different, conditions would have proved unsu itable for the evolution of life.
Dimensions beyond the common three of space and one of time might explain why the strong nuclear force is roughly [10.
Gluons carry the strong nuclear force and are constantly being exchanged by the quarks, as described by the theory known as quantum chromodynamics, or QCD.
While physicists know that the strong nuclear force keeps atomic nuclei together, they cannot calculate exactly the complex interplay of forces among neutrons and protons.
DZero eospokesperson Dmitri Denisov says that measuring the lifetime and other properties of the cascade and other heavy baryons will help physicists refine their models of the strong nuclear force.