英语词汇“psi prime”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

3. Particle Physics. A neutral, strongly interacting meson that is distinguished by an exceptionally long lifetime in relation to its mass of 3097 MeV, and is produced by the high-energy collision of protons, or of electrons and positrons (frequently written ψ, J/ψ; also called J). Also (in full psi prime, frequently written ψ′): a similar particle of mass 3686 MeV that decays into a psi and two pions.The ψ particle has a spin of 1, zero hypercharge, zero isospin, and negative parity.

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psi1974

1974 Times 18 Nov. 1/8 American physicists yesterday announced the discovery of a new kind of elementary particle which has been given the name Psi.

1974 J.-E. Augustin et al. in Physical Rev. Lett. 2 Dec. 1406/2 We have observed a very sharp peak in the cross section for e⁺e⁻ → hadrons, e⁺e⁻, and possibly μ⁺μ⁻... The resonance has the parameters E = 3·105 ± 0·003 GeV, Γ ≦ 1·3 MeV... We suggest naming this structure ψ(3105).

1974 G. S. Abrams et al. in Physical Rev. Lett. 9 Dec. 1453/2 We therefore began a systematic search..and quickly found a second narrow resonance decaying to hadrons. The parameters of this new state (which we suggest calling ψ(3695)) are M = 3·695 ± 0·004 GeV, Γ < 2·7 MeV.

1975 Physical Rev. Lett. 7 July 1/1 Although the newly discovered narrow boson resonances at Μ = 3·095 GeV (ψ or J) and at Μ′ = 3·684 GeV (ψ′) have yet to be fully explored, the data so far indicate that these particles are of a hadronic nature with quantum numbers J^P = I⁻ and I^GC = O⁻⁻.

1978 Sci. Amer. Mar. 50/2 The main significance of the discovery of the psi particle was that it provided compelling evidence for the existence of a fourth kind of quark, which had earlier been named the ‘charmed’ quark.

1997 S. Glashow in L. Wolpert Passionate Minds xviii. 172 It was found as the J particle at Brookhaven National Laboratory, and as the psi particle, independently, and on the same day, in California.

1999 Science 20 Aug. 1195/1 Any charm quarks produced in the collision have many more partners to choose from; they don't have to run away with an anticharm partner, which causes the number of J/psi mesons to drop.

单词	psi prime
释义	> as lemmas psi prime 3. Particle Physics. A neutral, strongly interacting meson that is distinguished by an exceptionally long lifetime in relation to its mass of 3097 MeV, and is produced by the high-energy collision of protons, or of electrons and positrons (frequently written ψ, J/ψ; also called J). Also (in full psi prime, frequently written ψ′): a similar particle of mass 3686 MeV that decays into a psi and two pions.The ψ particle has a spin of 1, zero hypercharge, zero isospin, and negative parity. ΘΚΠ the world > matter > physics > atomic physics > particle physics > particle participating in strong interaction > [noun] > psi particle psi1974 1974 Times 18 Nov. 1/8 American physicists yesterday announced the discovery of a new kind of elementary particle which has been given the name Psi. 1974 J.-E. Augustin et al. in Physical Rev. Lett. 2 Dec. 1406/2 We have observed a very sharp peak in the cross section for e⁺e⁻ → hadrons, e⁺e⁻, and possibly μ⁺μ⁻... The resonance has the parameters E = 3·105 ± 0·003 GeV, Γ ≦ 1·3 MeV... We suggest naming this structure ψ(3105). 1974 G. S. Abrams et al. in Physical Rev. Lett. 9 Dec. 1453/2 We therefore began a systematic search..and quickly found a second narrow resonance decaying to hadrons. The parameters of this new state (which we suggest calling ψ(3695)) are M = 3·695 ± 0·004 GeV, Γ < 2·7 MeV. 1975 Physical Rev. Lett. 7 July 1/1 Although the newly discovered narrow boson resonances at Μ = 3·095 GeV (ψ or J) and at Μ′ = 3·684 GeV (ψ′) have yet to be fully explored, the data so far indicate that these particles are of a hadronic nature with quantum numbers J^P = I⁻ and I^GC = O⁻⁻. 1978 Sci. Amer. Mar. 50/2 The main significance of the discovery of the psi particle was that it provided compelling evidence for the existence of a fourth kind of quark, which had earlier been named the ‘charmed’ quark. 1997 S. Glashow in L. Wolpert Passionate Minds xviii. 172 It was found as the J particle at Brookhaven National Laboratory, and as the psi particle, independently, and on the same day, in California. 1999 Science 20 Aug. 1195/1 Any charm quarks produced in the collision have many more partners to choose from; they don't have to run away with an anticharm partner, which causes the number of J/psi mesons to drop. extracted from psin. < as lemmas
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