pub fn py_phase_space_factor(
tags: &Bound<'_, PyTuple>,
recoil_mass: &PyMass,
daughter_1_mass: &PyMass,
daughter_2_mass: &PyMass,
resonance_mass: &PyMass,
mandelstam_s: &PyMandelstam,
) -> PyResult<PyExpression>Expand description
Construct a phase-space factor amplitude.