- #1
noospace
- 75
- 0
Hi all,
I'm having trouble understanding the short lifetime on the neutral pion. I understand that in the residual strong interaction between nucleons, the range of the virtual pion is limited by Heisenberg's uncertainty relation for energy, which thus limits its lifetime. I don't understand why this would be the case in other interactions such as [itex]\pi^0 \to 2\gamma[/itex] where the pion is not virtual.
Thanks
I'm having trouble understanding the short lifetime on the neutral pion. I understand that in the residual strong interaction between nucleons, the range of the virtual pion is limited by Heisenberg's uncertainty relation for energy, which thus limits its lifetime. I don't understand why this would be the case in other interactions such as [itex]\pi^0 \to 2\gamma[/itex] where the pion is not virtual.
Thanks