Beauty quark
bottom quark.
the quark having electric charge −1/3 times the elementary charge and bottom quantum number −1. It is more massive than the up, down, strange, and charmed quarks.
beauty quark
(by’tē)
See bottom quark.
bottom quark
(bŏt’əm)
A quark with a charge of – 1/3 . Its mass is smaller than that of the top quark, but larger than that of all the other quarks. The bottom quark is sometimes referred to as the beauty quark, though this term is falling out of use. See Table at subatomic particle.
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sleep before midnight, assumed to be necessary for one’s beauty. any extra sleep. Historical Examples It’s past twelve, I tell you, and you had ought to be in bed gettin’ your beauty sleep. Drusilla with a Million Elizabeth Cooper I hope your sister hasn’t finished her beauty sleep by this time. The World Peril of […]
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