Imagine a positive and negative pion, their only interaction between each other would be due to electromagnetism and the weak force, right? It is not like these two pions can form neutral pions due to the strong force. Otherwise it would mean the pions have emitted "gluonic" radiation due to the difference in binding energies which is obviously impossible.
Asked
Active
Viewed 127 times
0
-
2In some literature the “fictitious sigma meson” is treated as a two-pion molecule. See this related question for a more nuanced and contemporary view. – rob Sep 12 '22 at 19:23
-
This was almost exactly what I was going for. Thank you! – Aravind Karthigeyan Sep 12 '22 at 19:25
-
Note the QCD in the answer, that is the strong force, that is always there for the quarks that make up the resonance, so your "only interactions" is not correct. – anna v Sep 13 '22 at 04:22
1 Answers
1
Do pions not interact with other pions via the strong force
Pions are bound states of quark anti quark that have a small lifetime, so pion pion scattering experiments are note easy to design. The forces that would enter in any calculation are the strong, the weak, and the electromagnetic, the strong by definition being the strongest. The hypothesis that the only forces are the weak and electromagnetic is wrong.
anna v
- 233,453