2
$\begingroup$

In particle physics, when you read $J^P$, does it mean Spin parity or total angular momentum parity?

I know that the letter $J$ is used for TOTAL angular momentum but I think I read somewhere that sometimes it is meant spin when used in this $J^P$ notation.

$\endgroup$
3
$\begingroup$

The notation always refers to the total angular momentum. A source of confusion may be that in nuclear physics, we talk about the "spin" of a nucleus as a whole, even though the spin is only partly due to the intrinsic spin 1/2 of the neutrons and protons.

$\endgroup$

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.