kinematics

kinematics#

formulate_kinematic_map(workspace: Workspace, distribution: str | None = None) Mapping[Symbol, Expr][source]#

Map a serialized isobar mass and helicity angle to all invariants.

The serialized angle \(\theta_{ij}\) is measured between particle \(i\) and spectator \(k\) in the rest frame of the \((ij)\) isobar. Its ordered pair must follow the cyclic convention (1, 2), (2, 3), or (3, 1).