Which one of the following statements concerning pions is true?
A)They are stable particles.
B)They belong to the lepton family.
C)They are composed of three quarks.
D)They only exist in two charge states.
E)They interact with protons via the strong interaction.

Question

Quizplus · Accepted Answer

Pions are mesons, which are composite particles made up of a quark and an antiquark. They interact with protons and neutrons through the strong interaction, and can be charged or neutral. However, they are not stable particles and quickly decay into other particles. Therefore, statement A and D are incorrect. Pions also do not belong to the lepton family, so statement B is also incorrect. Statement C is partially correct, as pions are composed of a quark and an antiquark, but not three quarks.

Which One of the Following Statements Concerning Pions Is True