bottomness การใช้
- That's why charm, bottomness and topness are used instead.
- Bottom quarks have ( by convention ) a bottomness of & minus; 1 while bottom antiquarks have a bottomness of + 1.
- Bottom quarks have ( by convention ) a bottomness of & minus; 1 while bottom antiquarks have a bottomness of + 1.
- As with other flavour-related quantum numbers, bottomness is preserved under strong and electromagnetic interactions, but not under weak interactions.
- By convention, the flavor quantum numbers ( strangeness, charm, bottomness, and topness ) carry the same sign as the electric charge of the particle.
- For all the quark flavour quantum numbers ( strangeness, charm, topness and bottomness ) the convention is that the flavour charge and the electric charge of a quark have the same sign.
- :" Upness " and " downness " are as good flavor quantum numbers as strangeness, charm, bottomness and topness and are indeed preserved by the strong interactions.
- The discovery of charm, bottomness and topness could lead to further expansions up to SU ( 6 ) flavour symmetry, but the very large masses of these quarks make such symmetries almost useless.