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A baryon is a particle that consists of three quarks.
There are 6 different quarks: up, down, strange, charm, top and bottom (although your spec only requires you
to know about the first three).
See if you can spot a car registration plate that has three letters that could be a baryon (check whether it
exists by typing the combination into google).
Below are images of reg plates I spotted recently, email me pictures of any you spot!
Neutral lambda = up, down, strange (uds), net charge is zero, its mean
lifetime is 2.6x10-10s and it has a rest mass of 1115.6MeV/c2
Double
bottom Xi = bottom, bottom, down (bbd), its mean lifetime is unknown, it has a net charge of -1 and its rest mass is also
unknown.
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