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DOC: link to 10.1103/PhysRevD.100.054017
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redeboer committed Sep 10, 2024
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2 changes: 2 additions & 0 deletions README.md
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Expand Up @@ -11,6 +11,8 @@ The main target for the week was to implement a simple intensity function for tw

where $Z_{l}^{m}(\Omega,\Phi)=Y_{l}^{m}(\Omega)e^{-i\Phi}$ is a phase-rotated spherical harmonic, $\Omega$ is the solid angle, $\Phi$ is the angle between the production and polarization planes, $P_{\gamma}$ is the polarization magnitude, $[l]$ are the partial wave amplitudes, $m$ is the associated m-projection, $k$ refers to a spin flip ($k=1$) or non-flip ($k=0$) at the nucleon vertex, and $\kappa$ is an overall phase space factor.

The details for this model have been worked out in [10.1103/PhysRevD.100.054017](https://doi.org/10.1103/PhysRevD.100.054017) (2019).

![](docs/fig/feynman-gluex-two-pseudoscalar.svg)

The amplitude model is implemented in [AmpTools](https://github.com/mashephe/AmpTools) and symbolically in Python using [SymPy](https://docs.sympy.org) with additional tools from [`amptools`](https://ampform.rtfd.io) ([ComPWA Project](https://compwa.github.io)). Dynamics are not yet included (model-indepedent by binning over energy). So we are just comparing linar combinations of spherical harmonics, but the comparison can be extended by investigating final states with a vector meson and/or parametrizing dynamic lineshapes.
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6 changes: 3 additions & 3 deletions docs/index.md
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Expand Up @@ -17,15 +17,15 @@ I(\Omega,\Phi) = 2\kappa\sum_{k}\left(

```{include} ../README.md
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```

:::{figure} fig/feynman-gluex-two-pseudoscalar.svg
:::

```{include} ../README.md
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```

:::{figure} fig/feynman-gluex-vector-meson.svg
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