psi particle
noun Date: 1974 J/psi particle

New Collegiate Dictionary. 2001.

Look at other dictionaries:

  • psi particle — n. Particle Physics J PARTICLE …   English World dictionary

  • 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

  • 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

  • psi particle — /ˈsaɪ patəkəl/ (say suy pahtuhkuhl) noun a type of meson characterised by charm (charm1 def. 9). Also, J particle. {psi (def. 1) + particle (def. 2) …   Australian 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

  • 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

  • J/psi particle — noun Date: 1977 an unstable neutral fundamental particle of the meson group that has a mass about 6000 times the mass of an electron called also J particle, J/psi, psi particle …   New Collegiate Dictionary

  • J/psi particle — noun a subatomic particle with an unusually long lifetime and a large mass; a bound state of a charm quark and a anti charm quark Syn: J/psi meson, J/ψ particle …   Wiktionary

  • psi|on — «SY on, PSEE », noun. any one of a group of elementary particles related to and including the psi particle: »“Psions”…are thought to possess charm as a hidden property (New York Times). ╂[< psi (particle) + on] …   Useful english dictionary

  • Psi — may refer to:As a word* Psi (Greek) (Ψ, ψ) a letter of the Greek alphabet * Psi (Cyrillic) (Ѱ, ѱ), a letter of the early Cyrillic alphabet, adopted from Greek * Psi (instant messaging client), a popular Jabber client program * Psi… …   Wikipedia

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