Search Results
| Search type | Search syntax |
|---|---|
| Tags | [tag] |
| Exact | "words here" |
| Author |
user:1234 user:me (yours) |
| Score |
score:3 (3+) score:0 (none) |
| Answers |
answers:3 (3+) answers:0 (none) isaccepted:yes hasaccepted:no inquestion:1234 |
| Views | views:250 |
| Code | code:"if (foo != bar)" |
| Sections |
title:apples body:"apples oranges" |
| URL | url:"*.example.com" |
| Saves | in:saves |
| Status |
closed:yes duplicate:no migrated:no wiki:no |
| Types |
is:question is:answer |
| Exclude |
-[tag] -apples |
| For more details on advanced search visit our help page | |
Results tagged with parity
Search options not deleted
user 282947
Parity inversion P amounts to the sign flip of an odd number of coordinates (reflection). A parity-symmetric theory conserves P; since P²=I, the eigenvalues of P are 1 or -1. May be also used for formally analogous global, discrete, Z₂ symmetries, such as R- or G-parity.
1
vote
1
answer
122
views
How can scalar mesons have even parity?
From my understanding a pseudo-scalar meson has:
$$J^P=0^-$$
That makes sense since the total spin $S=0$ and $l$ must be $l=0$ which makes the parity:
$$ P=(-1)^{l+1}=-1 $$
uneven. … Now, for scalar mesons the parity is even. If $S=0$, then to make the parity even $l=1$, but that violates the fact $J=l+S=0$ ? …
- 61