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Charmed baryons — are a category of composite particles comprising all baryons made of at least one charm quark. Since their first observation in the 1970s, a large number of distinct charmed baryon states have been identified. Observed charmed baryons have masses … Wikipedia
charmed quark — n. Particle Physics a type of quark with a mass of c. 1.0 to 1.6 GeV/c2, a positive charge that is 2/ 3 the charge of an electron, +1 charm, and zero strangeness: see FLAVOR (sense 5) … English World dictionary
charmed quark — Physics. the quark having electric charge 2/3 times the elementary charge and charm C = +1. It is more massive than the up, down, and strange quarks. Also called c quark. * * * charmed quark, a quark having an electric charge of + 2/3 and charm… … Useful english dictionary
charmed — /chahrmd/, adj. 1. marked by good fortune or privilege: a charmed life. 2. Physics. (of a particle) having a nonzero value of charm. [1250 1300; ME. See CHARM1, ED2] * * * … Universalium
charmed — [[t]tʃɑrmd[/t]] adj. 1) cvb marked by good fortune: a charmed life[/ex] 2) phs Physics. (of a particle) having a nonzero value of charm • Etymology: 1250–1300 … From formal English to slang
CLEO (particle detector) — CLEO was a general purpose particle detector at the Cornell Electron Storage Ring (CESR), and the name of the collaboration of physicists who operated the detector. The name CLEO is not an acronym; it is short for Cleopatra and was chosen to go… … Wikipedia
J/psi particle — /jay suy , psuy /, Physics. the lightest of the psi particles, the first particle to be discovered that contains a charmed quark. [1975 80; see J PARTICLE, PSI PARTICLE] * * * ▪ subatomic particle type of meson consisting of a charmed quark … Universalium
psi particle — noun a neutral meson with a large mass • Syn: ↑J particle • Hypernyms: ↑meson, ↑mesotron * * * noun see psi II * * * /suy, psuy/, Physics. 1. any of a family of mesons consisting of a charmed … Useful english dictionary
j/psi particle — ˈjāˈsī noun Usage: usually capitalized J : an unstable neutral fundamental particle of the meson family that has a mass about 6000 times the mass of an electron, has an unusually long lifetime, and is thought to consist of a charmed quark and… … Useful english dictionary
psi particle — /suy, psuy/, Physics. 1. any of a family of mesons consisting of a charmed quark and a charmed antiquark. 2. an early name for the J/psi particle. [1970 75] * * * … Universalium
J particle — n. Particle Physics a short lived, relatively massive meson having no charge and a mass c. 6,060 times that of an electron: it is the combination of a charmed quark and its antiparticle … English World dictionary