ComPWA / gluex-nstar

Investigation of N* (and K*) in GlueX photoproduction experiment
https://compwa.github.io/gluex-nstar
MIT License
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Possible issues of resonances of pi0 p and eta p via `qrules` #24

Open shenvitor opened 1 week ago

shenvitor commented 1 week ago

Even though #5 is closed and generated.

We see new possible issues: for resonances of subsystems in $\pi^0 p$ and $\eta p$ are the same in qrules

Because the Δ resonances are generally less relevant for 𝜂𝑝 production due to isospin considerations. However, higher mass Δ resonances can still contribute in some cases.

And after looking up online, for example, if we only see limited to strong intermediate, the N* resonances for $\pi^0 p$ is likely correct in qrules, but for $\eta p$ should not be exactly the same as $\pi^0 p$ and possibly something went wrong or not yet considered here. For $\eta$ and $\pi^0$, the key difference is the isospin value, so maybe that is a direction to have a further investigation about why in qrules we don't get a different set of resonances as orignally expected...

          For the record:

allowed reaction types: "strong", "EM", and "weak": Screenshot 2024-06-06 at 11 59 07 Screenshot 2024-06-06 at 11 59 24

Untitled1

allowed reaction types: "strong", "EM": Screenshot 2024-06-06 at 12 20 49 Screenshot 2024-06-06 at 12 20 54 Screenshot 2024-06-06 at 12 21 00

allowed reaction types: "strong": Screenshot 2024-06-06 at 12 21 31

Originally posted by @shenvitor in https://github.com/ComPWA/gluex-nstar/issues/5#issuecomment-2152211377

redeboer commented 1 week ago

Better to rewrite the notebook so that it uses the StateTransitionManager directly, see this tutorial. With the STM, you can: