| 单词 | omega meson |
| 释义 | > as lemmasomega meson b. In full omega meson. A neutral meson with a mass of 782 MeV that is observed as a resonance when protons and antiprotons of sufficient energy collide, and on decaying typically produces a positive, a negative, and a neutral pion. Frequently written ω.The omega meson has zero strangeness, zero 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 B. C. Maglić et al. in Physical Rev. Lett. 7 178/1 The existence of a heavy neutral meson with T = 0 and J = 1− was predicted by Nambu... Such a particle is also expected in the vector meson theory of Sakurai and..according to the unitary symmetry theory; and for other reasons. We will refer to it as ω. 1961 New Scientist 5 Oct. 48/1 Four physicists at the Lawrence Radiation Laboratory, Berkeley, have made observations..that appear to indicate unequivocally the presence, in a proton-antiproton reaction, of the omega-meson. 1971 Sci. Amer. July 100/2 Three vector mesons with zero strangeness are currently known: the rho, the omega and the phi. 1997 Physics Lett. B. 411 362 We have measured the branching ratio for the radiative decay ω → η γ with ω mesons produced in antiproton-proton annihilation at rest into π0 ω and η ω. 2000 Jrnl. Physics A 33 8305 We theoretically predict the phenomenological coupling constant of the ω meson, which mediates the short range and repulsive nucleon force. < as lemmas |
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