| 释义 |
J particle
Thesaurus| Noun | 1.J particle - a neutral meson with a large masspsi particlemeson, mesotron - an elementary particle responsible for the forces in the atomic nucleus; a hadron with a baryon number of 0 |
J particle
J particle[′jā ‚pärd·ə·kəl] (particle physics) A neutral meson which has a mass of 3095 megaelectronvolts, spin quantum number 1, and negative parity and charge parity; it has an anomalously long lifetime of approximately 10-20 second (corresponding to a width of approximately 70 kiloelectronvolts). Also known as psi particle (symbolized ψ). J particle
Synonyms for J particlenoun a neutral meson with a large massSynonymsRelated Words |