The Twelve Fundamental Particles
| Quarks | Leptons | ||
|---|---|---|---|
| up
|
(u) | electron | (e-) |
| down
|
(d) | electron-neutrino | ( n e) |
| strange
|
(s) | muon | ( m -) |
| charm
|
(c) | muon-neutrino | ( n m) |
| bottom
|
(b) | tau | ( t -) |
| top
|
(t) | tau-neutrino | (n t) |
NB: The letters in brackets are the standard abreviations for the particle names.
? Why does the proton or the neutron not appear in the table?
ANSWER
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