RUB-EP1 · mmikhasenko · Jun 26, 2025 · Jun 26, 2025 · Jun 26, 2025 · Jan 6, 2026
diff --git a/.editorconfig b/.editorconfig
@@ -7,7 +7,7 @@ indent_style = space
 insert_final_newline = true
 trim_trailing_whitespace = true
 
-[*.{ipynb,md}]
+[*.{ipynb,md,qmd}]
 indent_size = unset
 
 [*.{py,toml}]

diff --git a/.vscode/extensions.json b/.vscode/extensions.json
@@ -1,5 +1,6 @@
 {
   "recommendations": [
+    "charliermarsh.ruff",
     "eamodio.gitlens",
     "editorconfig.editorconfig",
     "esbenp.prettier-vscode",
@@ -8,6 +9,8 @@
     "julialang.language-julia",
     "mhutchie.git-graph",
     "ms-python.python",
+    "ms-python.vscode-pylance",
+    "ms-toolsai.jupyter",
     "ms-vscode.live-server",
     "quarto.quarto",
     "redhat.vscode-yaml",
@@ -16,8 +19,8 @@
     "yzhang.markdown-all-in-one"
   ],
   "unwantedRecommendations": [
+    "astral-sh.ty",
     "bungcip.better-toml",
-    "charliermarsh.ruff",
     "davidanson.vscode-markdownlint",
     "executablebookproject.myst-highlight",
     "garaioag.garaio-vscode-unwanted-recommendations",
@@ -27,8 +30,6 @@
     "ms-python.isort",
     "ms-python.mypy-type-checker",
     "ms-python.pylint",
-    "ms-python.vscode-pylance",
-    "ms-toolsai.jupyter",
     "ms-toolsai.vscode-jupyter-cell-tags",
     "ms-toolsai.vscode-jupyter-slideshow",
     "travisillig.vscode-json-stable-stringify",

diff --git a/.vscode/settings.json b/.vscode/settings.json
@@ -9,7 +9,7 @@
     "editor.defaultFormatter": "esbenp.prettier-vscode"
   },
   "[quarto]": {
-    "editor.defaultFormatter": "esbenp.prettier-vscode"
+    "editor.defaultFormatter": "quarto.quarto"
   },
   "[toml]": {
     "editor.defaultFormatter": "tamasfe.even-better-toml"
@@ -24,19 +24,13 @@
       "url": "./schema.json"
     }
   ],
-  "julia.executablePath": "${workspaceFolder}/.pixi/envs/default/bin/julia",
   "julia.environmentPath": "${workspaceFolder}/docs/julia",
+  "julia.executablePath": "${workspaceFolder}/.pixi/envs/default/bin/julia",
   "julia.juliaup.install.hint": false,
   "livePreview.defaultPreviewPath": "docs/_build/html",
   "python.defaultInterpreterPath": ".pixi/envs/default/bin/python",
   "python.terminal.activateEnvironment": false,
   "quarto.path": ".pixi/envs/default/bin/quarto",
-  "search.exclude": {
-    "**/*.code-search": true,
-    "**/bower_components": true,
-    "**/node_modules": true,
-    "**/pixi.lock": true
-  },
   "yaml.schemas": {
     "./schema.json": ["models/*.yaml", "models/*.yml"]
   }

diff --git a/docs/julia/Manifest.toml b/docs/julia/Manifest.toml
@@ -1,6 +1,6 @@
 # This file is machine-generated - editing it directly is not advised
 
-julia_version = "1.12.3"
+julia_version = "1.12.4"
 manifest_format = "2.0"
 project_hash = "81eeda0d6951203a14155ea84270ff78356335e7"
 
@@ -602,7 +602,7 @@ version = "1.11.0"
 
 [[deps.MozillaCACerts_jll]]
 uuid = "14a3606d-f60d-562e-9121-12d972cd8159"
-version = "2025.5.20"
+version = "2025.11.4"
 
 [[deps.NaNMath]]
 deps = ["OpenLibm_jll"]
@@ -715,9 +715,9 @@ version = "1.4.4"
 
 [[deps.Plots]]
 deps = ["Base64", "Contour", "Dates", "Downloads", "FFMPEG", "FixedPointNumbers", "GR", "JLFzf", "JSON", "LaTeXStrings", "Latexify", "LinearAlgebra", "Measures", "NaNMath", "Pkg", "PlotThemes", "PlotUtils", "PrecompileTools", "Printf", "REPL", "Random", "RecipesBase", "RecipesPipeline", "Reexport", "RelocatableFolders", "Requires", "Scratch", "Showoff", "SparseArrays", "Statistics", "StatsBase", "TOML", "UUIDs", "UnicodeFun", "Unzip"]
-git-tree-sha1 = "459d8913a8b83c7222eb629664283653dadfe2b6"
+git-tree-sha1 = "063ef757a1e0e15af77bbe92be92da672793fd4e"
 uuid = "91a5bcdd-55d7-5caf-9e0b-520d859cae80"
-version = "1.41.3"
+version = "1.41.4"
 
     [deps.Plots.extensions]
     FileIOExt = "FileIO"
@@ -990,9 +990,9 @@ version = "0.4.2"
 
 [[deps.StructUtils]]
 deps = ["Dates", "UUIDs"]
-git-tree-sha1 = "79529b493a44927dd5b13dde1c7ce957c2d049e4"
+git-tree-sha1 = "b0290a55d9e047841d7f5c472edbdc39c72cd0ce"
 uuid = "ec057cc2-7a8d-4b58-b3b3-92acb9f63b42"
-version = "2.6.0"
+version = "2.6.1"
 weakdeps = ["Measurements", "Tables"]
 
     [deps.StructUtils.extensions]

diff --git a/docs/python/lc2ppik-lhcb-2683025.qmd b/docs/python/lc2ppik-lhcb-2683025.qmd
@@ -17,9 +17,8 @@ The [`ampform_dpd.io.serialization`](https://ampform-dpd.readthedocs.io/0.2.1rc0
 ## Import model
 
 ```{python}
-#| code-fold: true
-#| code-summary: Import Python libraries
-from __future__ import annotations
+# | code-fold: true
+# | code-summary: Import Python libraries
 from pathlib import Path
 import json
 import logging
@@ -41,7 +40,6 @@ from ampform_dpd.dynamics import (
     ChannelArguments,
     EnergyDependentWidth,
     MultichannelBreitWigner,
-    P,
     SimpleBreitWigner,
 )
 from ampform_dpd.io import aslatex, perform_cached_lambdify, simplify_latex_rendering
@@ -85,8 +83,8 @@ with open(THIS_DIR.parent.parent / "models" / "lc2ppik-lhcb-2683025.json") as f:
 ## Construct `ThreeBodyDecay`
 
 ```{python}
-#| code-fold: true
-#| code-summary: Name-to-LaTeX converter
+# | code-fold: true
+# | code-summary: Name-to-LaTeX converter
 def to_latex(name: str) -> str:
     latex = {
         "Lc": R"\Lambda_c^+",
@@ -124,7 +122,7 @@ CHAIN_DEFS = get_decay_chains(MODEL_DEFINITION)
 #### Blatt-Weisskopf form factor
 
 ```{python}
-#| code-fold: true
+# | code-fold: true
 z = sp.Symbol("z", nonnegative=True)
 s, m1, m2, L, d = sp.symbols("s m1 m2 L R", nonnegative=True)
 exprs = [
@@ -148,15 +146,14 @@ Math(aslatex(ff_L1520))
 #### Breit-Wigner
 
 ```{python}
-#| code-fold: true
+# | code-fold: true
 x, y, z = sp.symbols("x:z")
 s, m0, Γ0, m1, m2, L, d = sp.symbols("s m0 Gamma0 m1 m2 L R", nonnegative=True)
 exprs = [
     BreitWigner(s, m0, Γ0, m1, m2, L, d),
     SimpleBreitWigner(s, m0, Γ0),
     EnergyDependentWidth(s, m0, Γ0, m1, m2, L, d),
     FormFactor(s, m1, m2, L, d),
-    P(s, m1, m2),
     Kallen(x, y, z),
 ]
 Math(aslatex({e: e.doit(deep=False) for e in exprs}))
@@ -174,8 +171,8 @@ Math(aslatex(K892_BW))
 #### Multi-channel Breit-Wigner
 
 ```{python}
-#| code-fold: true
-#| column: page-inset-right
+# | code-fold: true
+# | column: page-inset-right
 x, y, z = sp.symbols("x:z")
 s, m0, Γ0, m1, m2, L, d = sp.symbols("s m0 Gamma0 m1 m2 L R", nonnegative=True)
 channels = tuple(
@@ -196,14 +193,13 @@ exprs = [
     BreitWigner(s, m0, Γ0),
     EnergyDependentWidth(s, m0, Γ0, m1, m2, L, d),
     FormFactor(s, m1, m2, L, d),
-    P(s, m1, m2),
     Kallen(x, y, z),
 ]
 Math(aslatex({e: e.doit(deep=False) for e in exprs}))
 ```
 
 ```{python}
-#| column: page-inset-right
+# | column: page-inset-right
 L1405_Flatte = formulate_multichannel_breit_wigner(
     propagator=CHAIN_DEFS[0]["propagators"][0],
     resonance=to_latex(CHAIN_DEFS[0]["name"]),
@@ -217,7 +213,7 @@ Math(aslatex(L1405_Flatte))
 ### Unpolarized intensity
 
 ```{python}
-#| column: page-inset-right
+# | column: page-inset-right
 λ0, λ1, λ2, λ3 = sp.symbols("lambda(:4)", rational=True)
 amplitude_expr, _ = formulate_aligned_amplitude(MODEL_DEFINITION, λ0, λ1, λ2, λ3)
 amplitude_expr.cleanup()
@@ -228,7 +224,7 @@ amplitude_expr.cleanup()
 #### Helicity recouplings
 
 ```{python}
-#| code-fold: true
+# | code-fold: true
 λa = sp.Symbol(R"\lambda_a", rational=True)
 λb = sp.Symbol(R"\lambda_b", rational=True)
 λa0 = sp.Symbol(R"\lambda_a^0", rational=True)
@@ -250,7 +246,7 @@ Math(aslatex({e: e.doit(deep=False) for e in exprs}))
 #### Recoupling deserialization
 
 ```{python}
-#| code-fold: true
+# | code-fold: true
 recouplings = [
     formulate_recoupling(MODEL_DEFINITION, chain_idx=0, vertex_idx=i) for i in range(2)
 ]
@@ -260,7 +256,7 @@ Math(aslatex({e: e.doit(deep=False) for e in recouplings}))
 #### Chain amplitudes
 
 ```{python}
-#| column: page-inset-right
+# | column: page-inset-right
 definitions = formulate_chain_amplitude(λ0, λ1, λ2, λ3, MODEL_DEFINITION, chain_idx=0)
 Math(aslatex(definitions))
 ```
@@ -272,15 +268,19 @@ The following serves as a numerical check on whether the amplitude model has bee
 :::
 
 ```{python}
+# | code-fold: true
+# | column: page-inset-right
 checksums = {
     misc_key: {checksum["point"]: checksum["value"] for checksum in misc_value}
     for misc_key, misc_value in MODEL_DEFINITION["misc"].items()
     if "checksum" in misc_key
 }
-checksums
+assert len(checksums) == 1, "Expected only one checksum entry"
+checksums["amplitude_model_checksums"]
 ```
 
 ```{python}
+# | code-fold: true
 checksum_points = {
     point["name"]: {par["name"]: par["value"] for par in point["parameters"]}
     for point in MODEL_DEFINITION["parameter_points"]

diff --git a/models/lc2ppik-lhcb-2683025.json b/models/lc2ppik-lhcb-2683025.json
@@ -760,14 +760,14 @@
       "mass": 1.4051,
       "channels": [
         {
-          "gsq": 0.23395150538434703,
+          "gsq": 0.328725260215546,
           "ma": 0.938272046,
           "mb": 0.493677,
           "l": 0,
           "d": 0
         },
         {
-          "gsq": 0.23395150538434703,
+          "gsq": 0.328725260215546,
           "ma": 1.18937,
           "mb": 0.13957018,
           "l": 0,