colliderx 0.1.1

Local-first particle decay simulator

ColliderX

ColliderX is a local-first particle decay simulator (MVP).

Run a short end-to-end flow: event simulation → Feynman diagram → summary plots.

Install

python -m venv .venv
source .venv/bin/activate
pip install -r requirements.txt

Install Graphviz (optional, only needed for rendered feynman.png):

macOS:

brew install graphviz

Linux (Debian/Ubuntu):

sudo apt-get update
sudo apt-get install -y graphviz

Windows (PowerShell):

# Option 1: winget
winget install Graphviz.Graphviz

# Option 2: Chocolatey
choco install graphviz

Verify Graphviz is available:

dot -V

Note: pip install colliderx cannot reliably auto-install system Graphviz (dot) across all OS/package managers. ColliderX will still run without it and fall back to DOT-only output (feynman.dot).

Quick Run

Default (interactive, show-only):

python main.py -p "Muon" -n 1000

Save outputs to disk and avoid interactive windows:

python main.py -p "Muon" -n 1000 --save --no-show -o artifacts/flow_muon

Run with a seed:

python main.py -p "Muon" -n 1000 -s 42

CLI Flags (short)

• -p, --particle : parent particle name (positional also supported)
• -n, --events : number of events to simulate
• -s, --seed : random seed
• -E, --energy : override parent energy (MeV)
• --save : persist generated files to -o/--out
• --no-show : do not open interactive plot windows
• -o, --out : output directory (default artifacts/run_<timestamp>)
• --decay : force a particular root decay mode
• --afb : enable forward-backward asymmetry (where applicable)

Saved Outputs (--save)

• feynman.dot (DOT source)
• feynman.png (if Graphviz is available and rendering enabled)
• graphs/ (PNG plots: decay modes, spectra, process-specific plots)
• summary.txt (run summary and counts)

Tests

pytest -q

If Graphviz is not installed, the tool falls back to writing DOT files only and continues the flow.