Timeline for Can neutrons and protons have excited states?
Current License: CC BY-SA 4.0
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| Jan 3, 2023 at 9:16 | comment | added | Kevin Kostlan | The answer is correct, but the "catch" is that these particles barely exist: their decay width is comparable to the excitation energy. The way a block of wood "kind of" has a pitch when you strike it. These particles manifest as small, round peaks in the scattering cross-section and not much else. We can do fun stuff with muons such as bubble chambers and spectra of muonic atoms. But we can't, for example, make an exotic carbon nucleus with a delta baryon and then measure it's charge radius. | |
| Feb 2, 2020 at 20:51 | vote | accept | Solidification | ||
| Feb 2, 2020 at 19:56 | history | answered | Anders Sandberg | CC BY-SA 4.0 |