charm quark
Americannoun
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A quark with a charge of + 2/3 and a charm of +1. Its mass is greater than that of the electron and greater than that of the up quark, down quark, and strange quark, but less than that of the bottom quark and top quark.
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Also called charmed quark
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See Table at subatomic particle
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Particle physics changed dramatically again in 1974 with the discovery of the heavier charm quark.
From Science Daily ● Sep. 2, 2026
The charm quark discovery helped build the framework that became the Standard Model, the broad theory describing elementary particles and fundamental forces, while also expanding the known spectrum of possible hadronic structures.
From Science Daily ● Sep. 2, 2026
Two sets of similar but heavier particles can pop into brief existence: the muon, muon neutrino, charm quark, and strange quark; and the tau, tau neutrino, top quark, and bottom quark.
From Science Magazine ● Mar. 27, 2024
Within months, they made further discoveries that confirmed their interpretation of the particle as a charm quark.
From Nature ● Aug. 27, 2018
For example, in 1970, theorists predicted the existence of a particle called the charm quark; two experimenters independently discovered the particle in 1974, for which they received the Nobel Prize in physics 2 years later.
From Science Magazine ● Jul. 4, 2012
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