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Questions tagged [particle-physics]

Particle physics is the study of the fundamental forces of nature as they are embodied in the interactions of elementary and composite particles at high energies and short time and distance scales.

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How's the energy of particle collisions calculated?

Physicists often refer to the energy of collisions between different particles. My question is: how is that energy calculated? Is that kinetic energy? Also, related to this question, I know that the ...
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3answers
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Lie theory, Representations and particle physics

This is a question that has been posted at many different forums, I thought maybe someone here would have a better or more conceptual answer than I have seen before: Why do physicists care about ...
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What is spin as it relates to subatomic particles?

I often hear about subatomic particles having a property called "spin" but also that it doesn't actually relate to spinning about an axis like you would think. Which particles have spin? What does ...