Quarks
Table
Quarks*
quark type baryon number charge strangeness** charm** bottom** top** mass (MeV)
down (d) 1/3 –(1/3)e 0 0 0 0 5–15
up (u) 1/3 +(2/3)e 0 0 0 0 2–8
strange (s) 1/3 –(1/3)e –1 0 0 0 100–300
charm (c) 1/3 +(2/3)e 0 1 0 0 1,000–1,600
bottom (b) 1/3 –(1/3)e 0 0 –1 0 4,100–4,500
top (t) 1/3 +(2/3)e 0 0 0 1 180,000
*Note that antiquarks exist for all flavours of quark and have opposite values for all the quantum numbers listed here.
**These are quantum numbers that must be assigned to the quarks to differentiate the various flavours.
See as table:
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