| 释义 |
chi meson
chi meson C5307750 (kī, kē)n. An electrically neutral meson composed of a charm quark and charm antiquark and having a mass 6,683 times that of an electron and a mean lifetime of about 6.3 × 10-23 second.chi meson
chi meson[‚kī ′mā‚zän] (particle physics) A meson resonance of mass 958 MeV/ c 2, designated χ0, which has 0 isospin and charge, negative parity, positive G parity, and spin probably equal to 0. Also known as eta-prime meson (η′). Also denoted η′A (958). |