amplitude

amplitude#

import ampform_dpd.io.serialization.amplitude

formulate(model: ModelDefinition, cleanup_summations: bool = False, to_latex: Callable[[str], str] = <function identity_function>, additional_builders: dict[str, PropagatorDynamicsBuilder] | None = None) → AmplitudeModel[source]#

formulate_chain_amplitude(λ0: sp.Rational, λ1: sp.Rational, λ2: sp.Rational, λ3: sp.Rational, model: ModelDefinition, chain_idx: int, to_latex: Callable[[str], str] = <function identity_function>, additional_builders: dict[str, PropagatorDynamicsBuilder] | None = None) → dict[Symbol, complex | float | Expr][source]#

formulate_aligned_amplitude(model: ModelDefinition, λ0: Rational | Symbol, λ1: Rational | Symbol, λ2: Rational | Symbol, λ3: Rational | Symbol) → tuple[PoolSum, dict[Symbol, Expr]][source]#

formulate_recoupling(model: ModelDefinition, chain_idx: int, vertex_idx: int) → Expr[source]#

get_existing_subsystem_ids(model: ModelDefinition) → list[FinalStateID][source]#

class HelicityRecoupling(*args)[source]#

Bases: Expr

λa: Rational | Symbol[source]#

λb: Rational | Symbol[source]#

λa0: Rational | Symbol[source]#

λb0: Rational | Symbol[source]#

class ParityRecoupling(*args)[source]#

Bases: Expr

λa: Any[source]#

λb: Any[source]#

λa0: Any[source]#

λb0: Any[source]#

f: Any[source]#

class LSRecoupling(*args)[source]#

Bases: Expr

λa: Any[source]#

λb: Any[source]#

l: Any[source]#

s: Any[source]#

ja: Any[source]#

jb: Any[source]#

j: Any[source]#