- #151

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There are 2 different problems as I understand:

1. Even in proton the number of quarks is not well defined. It is 3 if we use 'hard' measurements.

2. Some particles has non-integer particle content even for the 'hard' measurements

Check the list:

http://en.wikipedia.org/wiki/List_of_mesons

Kl, Ks, Eta prime with all that sqrt(2) and sqrt(6) in denominator