Played with the repository today, want to drop feedback here.
My goal was to get the unpolarized intensity as a function of the Mandelstam invariant variables, $\mathcal{I}(\sigma_1,\sigma_2)$.
Once you put all expressions together, BWs, angles, and couplings under the spin some $|\mathcal{M}|^2$, it take forever to doit + simplify.
I waited an hour and it did not finish, even with 2 isobars. So, likely one needs to be smart for the simplification step.
Something along this lines
- start with parametric expressions for BW
- simplify angular dependence, getting a bilinear form on
H_prod BW H_decay
- substitute the angles
- substitute BWs
- simplify
- compile
See also ComPWA/report#7
Played with the repository today, want to drop feedback here.
My goal was to get the unpolarized intensity as a function of the Mandelstam invariant variables,$\mathcal{I}(\sigma_1,\sigma_2)$ .$|\mathcal{M}|^2$ , it take forever to
Once you put all expressions together, BWs, angles, and couplings under the spin some
doit+simplify.I waited an hour and it did not finish, even with 2 isobars. So, likely one needs to be smart for the simplification step.
Something along this lines
H_prod BW H_decaySee also ComPWA/report#7