释义 |
rho meson
rho mesonn. Any of a group of three vector mesons having a positive, neutral, or negative electric charge and a mass 1,518 times that of the electron and a mean lifetime of about 4 × 10-24 second.rho meson
rho meson[′rō ′mā‚sän] (particle physics) Collective name for vector meson resonances belonging to a charge multiplet with total isospin 1, hypercharge 0, negative charge conjugation parity, positive g-parity, mass of about 770 MeV, and width of about 146 MeV. Designated ρ(770). |