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单词 rho meson
释义

rho meson


rho meson

n. 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).
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