In particle physics, B mesons are mesons composed of a bottom antiquark and either an up ({Subatomic particle|B+}), down ({Subatomic particle|B0}), strange ({Subatomic particle|Strange B0}) or charm quark ({Subatomic particle|Charmed B+}). The combination of a bottom antiquark and a top quark is not thought to be possible because of the top quark....
(from the article `particle accelerator`) ...that they have different values of momentum. When they annihilate, the net momentum is not zero, as it is with particles of equal and opposite ...
A meson containing a bottom (b) quark, and one lighter antiquark. The b quark is the second heaviest quark; only the top quark is heavier. B-mesons are ideal particles for studying the tiny differences between matter and antimatter.
A meson containing a bottom (b) quark, and one lighter anti-quark. The b quark is the second heaviest quark, and is found only at particle accelerators. Only the top quark is heavier.
[n] - exceedingly short-lived meson
noun exceedingly short-lived meson
One of the heaviest mesons, containing a bottom quark.
a meson composed of a bottom quark and an up or down antiquark or of a bottom antiquark and an up or down quark. Also called