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### How can a truly elementary particle decay into other particles? [duplicate]

Consider (for example) the next particle decays: The decay of a Higgs and the decay of a muon [in the diagram of which we also see the decay of (virtual) $W^-$ into an electron and its associated ...
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### What are quarks made of?

So atoms are formed from protons and neutrons, which are formed from quarks. But where do these quarks come from? What makes them?
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### Can electrons be non-fundamental in higher dimensions?

I was wondering, is it necessary that all elementary particles remain elementary in higher dimensions too, or can there be a higher curled dimension (like those in string theory) where an electron, ...
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### References on the non-compositeness of the known elementary particles

What paper(s) or theory(s) describe or prove that the elementary particles that we have determined today cannot be made up of smaller more fundamental particles?
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### Why is an electron considered a point-particle?

Apparently, an electron has mass not greatly smaller than a proton (roughly 1/20, I read, the rest being just binding energy) its volume should, therefore, not be a lot smaller, and its radius between ...
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### Are electrons miniature black holes? [duplicate]

For something to be a blackhole, it must have gravity and the radius must be smaller than the schwarzschild radius for its mass. -Electrons have gravity -Electron are theoretically believed to be ...
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### Why should I believe that "elementary" particles are indeed elementary?

Atoms were once thought to be indivisible (i.e. have no substructure) until it was discovered that they are made of protons and neutrons. Protons and neutrons in turn are made of quarks, and that's ...
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### How to prove or disprove that elementary particle has no spatial extention?

We are told that elementary particles has dimension zero and take up no space. For example, the electron is a point particle that have a negative unit charge, also has mass and spin, but no size. My ...
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### Is there scientific work about the inner structure of the electron and its magnetic and electric fields?

Since the electron posseses permanently an electric and a magnetic field to search for a model of the constituents of this inner structure and the two fields should be good scientific area of research....