Which particles do NOT form a part of the flux of primary cosmic rays reaching Earth?

Question

Quizplus · Accepted Answer

Neutrons do not form a part of the flux of primary cosmic rays reaching Earth as they are electrically neutral and can easily interact and collide with other particles in the interstellar space, leading to their decay or absorption before they reach Earth. The other options (A, C, D) are all charged particles that can interact with the magnetic fields and atmosphere of Earth, leading to their detection and measurement by various instruments.

Which Particles Do NOT Form a Part of the Flux