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Question
The up quark u has charge +2/3 and strangeness 0; the down quark d has charge -1/3 and strangeness 0; the strange quark s has charge -1/3 and strangeness -1. This means there can be no meson with:
A) charge 0 and strangeness -1
B) charge -1 and strangeness -1
C) charge +1 and strangeness -1
D) charge -1 and strangeness +1
E) charge 0 and strangeness +1
Answer
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