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Quarks were theorized in 1964 and experiementally verified in 1968. To say "invented" would be a misnomer.

This next part is a direct quote from the Wikipedia article titled "Quark" [ http://en.wikipedia.org/wiki/Quarks ]:

The quark model was independently proposed by physicists Murray Gell-Mann and George Zweigin 1964. There was little evidence for this model until 1968, when electron-proton scattering experiments indicated that the electrons were scattering off three point-like constituents inside the proton. All six flavors of quark have been observed, following the discovery of the top quark at Fermilab in 1995.

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15y ago
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9y ago

The quark's existence was proposed in 1964. In 1968, experiments verified candidates for quarks in protons but were initially reluctant to declare they were actually quarks. The final quark flavor proposed in the current standard model was discovered in 1995.

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15y ago

In 1964 George Zweig and Murray Gell-Mann formulated a theory proposing the existence of quarks.

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14y ago

it was postulated by Murray Gell-Mann

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Q: Who discovered down quarks?
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Related questions

How many types of quarks are there and what is the name of one of them?

There are 6 different types of quarks, named in pairs:Top, BottomStrange, CharmUp, Down0123qwerty0123But don't forget that all particles, besides force particles ( gravity-graviton, electromagnetism-photon, weak force-low guage boson, strong force-gluon ), have antimatter counterparts.Anti-top, Anti-bottomAnti-strange, Anti-charmAnti-up, Anti-down


What are the names of the types of quarks in protons and neutrons?

Protons and neutrons are composite particles make up of up and down quarks. There are two up quarks and one down quark in a proton, and two down quarks and an up quark in a neutron.


What is the simplest type of substance and cannot be broken down?

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What do neutrons consist of?

Neutrons consist of small particles, called "Quarks". Protons also consist of quarks, but what quarks is made of, is still not discovered.


How many up quarks and down quarks do protons have?

A proton is made up of two up quarks and one down quark.


What are names for quarks?

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What are 3 common quarks?

Three common quarks are up, down, and strange. Up and down quarks are found in protons and neutrons, while strange quarks are found in certain types of subatomic particles.


How many up and down quarks are in one proton?

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What is the name of one types of quarks found in protons and neutrons?

Up quarks and down quarks are in protons and neutrons.


what name of one of the types of quarks found in protons and neutrons?

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Protons and neutrons are made of what?

Protons and neutrons are made of smaller particles called quarks. Protons are composed of two up quarks and one down quark, while neutrons are composed of two down quarks and one up quark. These quarks are held together by the strong nuclear force.


When was the last quark discovered?

The last quark to be discovered was the top quark in 1995 at Fermilab in the United States. It is the heaviest of all quarks and completes the six-member family of quarks.