What do we mean when we say that particles such as neutrinos or WIMPs are weakly interacting?

Question

Quizplus · Accepted Answer

When we say that particles such as neutrinos or WIMPs are weakly interacting, we mean that they respond to the weak force but not to the electromagnetic force, which means they cannot emit light. This is because the weak force is much weaker than the electromagnetic force, and so these particles do not interact with matter in the same way that more familiar particles, such as protons and electrons, do.

Note: Options B and C are incorrect because they do not accurately describe what it means for a particle to be weakly interacting. Option D is partially correct, but it is not specific enough – particles such as neutrinos and WIMPs do interact with other matter through the weak force, but not necessarily only through the weak force.

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