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Six lowercase letters u, d, c, s, t and b.
Also known as: Quark symbols, Flavour letters, Up down charm strange top bottom
The six quark flavours take single lowercase letters, and the names are deliberately whimsical — up, down, charm, strange, top and bottom. 'Strange' predates the quark model and refers to the unexpectedly long lifetime of the particles containing it.
Denote the six quark flavours: up, down, charm, strange, top and bottom.
Contexts: Laboratory
Are grouped in three generations of increasing mass, each pair differing in charge by one unit.
Contexts: Laboratory
Take names chosen for memorability rather than description; 'strange' predates the quark model and refers to the anomalously long lifetimes of the particles carrying it.
Contexts: Laboratory
Single italic lowercase letters, each a simple stroke-and-bowl form, sometimes carrying a colour subscript.