bottom quark
beauty quark

It is made up of two strange quarks and a bottom quark.

The bottom quark is much more massive than anything it decays into.

B-tagging, the identification of bottom quarks, is the most important example.

The heavier, charm and bottom quarks are produced there dominantly.

Identifying bottom quarks helps to identify the decays of these particles.

These consist of a bottom quark and its antiparticle.

Although bottom quarks are not very common, they are found in particles such as B mesons, among others.

So, since the strange and bottom quarks have a negative charge, they have flavor quantum numbers equal to 1.

Hadrons containing bottom quarks have sufficient lifetime that they travel some distance before decaying.

A third generation leptoquark, for example, might decay into a bottom quark and a tau lepton.