What is made up of all the rest quarks?

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Summary:
The proton and neutron are composed of up and down quarks. What is made up of all the rest quarks?
The proton and neutron are composed of up and down quarks. What is made up of all the rest quarks?
 

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PeroK
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Orodruin
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Should be added that due to the nature of weak interactions, all baryons and mesons containing heavy quarks are unstable and generally decay relatively fast. They are not present in large quantities anywhere.
 
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vanhees71
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Well, fast is relative. Since the weak interaction is really weak, some hadrons can be considered as quite stable if there's no strong interaction process leading to its decay. A famous example is the ##J/\psi##, which is pretty long-lived because it only decays through the electromagnetic and weak interaction. It has a very narrow width of 92.6 keV (compared to its mass of about 3.1 GeV):

https://pdglive.lbl.gov/Particle.action?init=0&node=M070&home=MXXX025#decayclump_G
 
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Longest lived strange particle is long K0... with ct of 16 m. Longest lived strange baryon is Λ... with 7,8 cm. Whereas n has 260 million km.
 
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