what are quarks?
who discovered them?
Answers
Answer:
A quark (/kwɔːrk, kwɑːrk/) is a type of elementary particle and a fundamental constituent of matter. Quarks combine to form composite particles called hadrons, the most stable of which are protons and neutrons, the components of atomic nuclei.[1] Due to a phenomenon known as color confinement, quarks are never directly observed or found in isolation; they can be found only within hadrons, which include baryons (such as protons and neutrons) and mesons.[2][3] For this reason, much of what is known about quarks has been drawn from observations of hadrons.
Quark
Three colored balls (symbolizing quarks) connected pairwise by springs (symbolizing gluons), all inside a gray circle (symbolizing a proton). The colors of the balls are red, green, and blue, to parallel each quark's color charge. The red and blue balls are labeled "u" (for "up" quark) and the green one is labeled "d" (for "down" quark).
A proton is composed of two up quarks, one down quark, and the gluons that mediate the forces "binding" them together. The color assignment of individual quarks is arbitrary, but all three colors must be present.
Explanation:
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Answer:
The quark model was independent proposed by physicists Murray Hellman and george Zweig in 1964. Quarks were introduced as part of an ordering scheme for hadrons and there was little evidence for their physical existence until deep . scattering experiments at the Stanford linear accelerator center in 1968.