| Kieli | Käännökset |
|---|---|
| venäjä | ипсилон-частица (ipsilon-tšastitsa) |
| Monikko | upsilon particles |
(particle physics) Any of a number of bound states of a heavy quark and its antiquark, especially that formed from a bottom quark and an anti-bottom quark.
A plot of the invariant mass of muon pairs, from the Upsilon particle discovery paper. The peak at about9.5 GeV/c2 is due to the contribution of the Upsilon meson.
(particle physics) Any of a number of bound states of a heavy quark and its antiquark, especially that formed from a bottom quark and an anti-bottom quark.
Quark structure of the Upsilon meson