| 单词 | rho meson |
| 释义 | > as lemmasrho meson 4. Physics. In full rho meson. A neutral meson with a mass of approx. 770 MeV (1506 times that of an electron) that is observed as a resonance and on decaying typically produces two pions. Frequently written ρ.The rho meson has zero strangeness, unit isospin, unit spin, and negative parity. ΘΚΠ the world > matter > physics > atomic physics > particle physics > particle participating in strong interaction > meson > [noun] > type of tau1949 photomeson1950 theta1954 eta1961 omega meson1961 rho1961 phi meson1962 bottomonium1976 quarkonium1977 upsilon1977 1961 S. Bergia et al. in Physical Rev. Lett. 6 370/1 The possibility of detecting experimentally the T = 0 unstable particle (which we shall denote by ρ) is discussed. 1977 S. Weinberg First Three Minutes vii. 141 Rho mesons behave as if they consist of a quark and an antiquark. 1987 Science 20 Sept. 1251/3 The original string theory was only able to describe bosons such as the pi-meson or the rho meson. 2002 F. Close et al. Particle Odyssey vii. 117 The broad ridge in red reveals the ‘rho’ resonance, which decays to two pions. < as lemmas |
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