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Quarks have fractional electric charge values – either (− 1 3) or (+ 2 3) times the elementary charge (e), depending on flavor. Up, charm, and top quarks (collectively referred to as up-type quarks) have a charge of + 2 3 e; down, strange, and bottom quarks ( down-type quarks) have a charge of − 1 3 e.
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In 1964, two physicists independently proposed the existence of the subatomic particles known as quarks. Physicists Murray Gell-Mann and George Zweig were working independently on a theory for strong interaction symmetry in particle physics.
Quark is a subatomic particle that forms protons and neutrons with other quarks or antiquarks. Learn about the six types of quarks, their properties, and the theory of quantum chromodynamics that explains their interactions.
Quark is a fundamental particle and a constituent of matter. Learn about the six types of quarks, their properties, antiparticles, and the standard model of quarks with examples and FAQs.
