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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. DO NOT USE THIS TAG for point particles in classical mechanics.

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Is it true that matter and antimatter must have same mass?

Consider a matter and antimatter pair having the same mass and one of the two has been accelerated by an external force or supplied with some initial kinetic energy (After big bang least one of the ma …
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