The Exchange Particles for the Strong Interaction Are

Q18: In brane-world theory, there are extra<br>A) strings.<br>B)

Q19: In an accelerator, two protons collide head-on

Q20: Isolated quarks were first observed in<br>A) 1938.<br>B)

Q21: The neutral pion decays by π⁰ →

Q22: In addition to charge and baryon number,

Q24: Which force does not diminish with increasing

Q25: A bound triplet of quarks is called

Q26: LHC stands for<br>A) Lorentz Heavy Centrifuge.<br>B) Level

Q27: Which of the following particles not considered

Q28: The proton has the quark structure<br>A) uud<br>B)