- #1
cooev769
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So in a lecture I'm reading up on we are given questions to answer during the lectures with no answers, and for this particular lecture the answer has been omitted and it is in none of our textbooks.
But basically it says that a proton and a sigma plus, both have the same quark composition and hence should have the same mass, but the sigma + has a great mass than the proton. Basically the sigma + has a greater energy, but this seems weird to me because as an object gains energy does that necessarily mean it gains mass? I thought that was only in relativity as the variable mass, which is actually fallacious and that mass is actually a lorentz scalar.
Can anybody explain this difference in mass to me clearly?
Thanks :)
But basically it says that a proton and a sigma plus, both have the same quark composition and hence should have the same mass, but the sigma + has a great mass than the proton. Basically the sigma + has a greater energy, but this seems weird to me because as an object gains energy does that necessarily mean it gains mass? I thought that was only in relativity as the variable mass, which is actually fallacious and that mass is actually a lorentz scalar.
Can anybody explain this difference in mass to me clearly?
Thanks :)