system_control¶

class GammaCheck[source]¶

Bases: expertsystem.ui.system_control.InteractionDeterminationFunctorInterface

check(in_edge_props, out_edge_props, node_props)[source]¶

name_label = 'Name'¶

class InteractionDeterminationFunctorInterface[source]¶

Bases: abc.ABC

abstract check(in_edge_props, out_edge_props, node_props)[source]¶

class LeptonCheck[source]¶

Bases: expertsystem.ui.system_control.InteractionDeterminationFunctorInterface

check(in_edge_props, out_edge_props, node_props)[source]¶

lepton_flavour_labels = [<StateQuantumNumberNames.ElectronLN: 6>, <StateQuantumNumberNames.MuonLN: 9>, <StateQuantumNumberNames.TauLN: 13>]¶

name_label = 'Name'¶

qns_label = 'QuantumNumber'¶

class StateTransitionManager(initial_state, final_state, allowed_intermediate_particles=[], interaction_type_settings={}, formalism_type='helicity', topology_building='isobar', number_of_threads=4, propagation_mode='fast')[source]¶

Bases: object

add_final_state_grouping(fs_group)[source]¶

build_topologies()[source]¶

create_interaction_setting_groups(graph_node_setting_pairs)[source]¶

create_seed_graphs(topology_graphs)[source]¶

determine_node_settings(graphs)[source]¶

find_solutions(graph_setting_groups)[source]¶

initialize_qn_propagator(state_graph, node_settings)[source]¶

prepare_graphs()[source]¶

propagate_quantum_numbers(state_graph_node_settings_pair)[source]¶

set_allowed_interaction_types(allowed_interaction_types)[source]¶

set_topology_builder(topology_builder)[source]¶

analyse_solution_failure(violated_laws_per_node_and_graph)[source]¶

calculate_strength(node_interaction_settings)[source]¶

calculate_swappings(id_mapping)[source]¶

change_qn_domain(interaction_settings, qn_name, new_domain)[source]¶

check_equal_ignoring_qns(ref_graph, solutions, ignored_qn_list)[source]¶: defines the equal operator for the graphs ignoring certain quantum numbers

create_edge_id_particle_mapping(graph, external_edge_getter_function)[source]¶

create_setting_combinations(node_settings)[source]¶

external_edge_identical_particle_combinatorics(graph, external_edge_getter_function)[source]¶

filter_graphs(graphs, filters)[source]¶

Implements filtering of a list of StateTransitionGraph ‘s.

This function can be used to select a subset of StateTransitionGraph ‘s from a list. Only the graphs passing all supplied filters will be returned.

Note

For the more advanced user, lambda functions can be used as filters.

Parameters

graphs ([StateTransitionGraph]) – list of graphs to be filtered
filters (list) – list of functions, which take a single StateTransitionGraph as an argument

Returns

filtered list of graphs

Return type

[StateTransitionGraph]

Example

Selecting only the solutions, in which the \(\rho\) decays via p-wave:

>>> myfilter = require_interaction_property(
        'rho', InteractionQuantumNumberNames.L,
        create_spin_domain([1], True))
>>> filtered_solutions = filter_graphs(solutions, [myfilter])

filter_interaction_types(valid_determined_interaction_types, allowed_interaction_types)[source]¶

load_default_particle_list(method=<function load_particle_list_from_xml>)[source]¶

Load the default particle list that comes with the expertsystem.

Return type: None

match_external_edge_ids(graphs, ref_graph_id, external_edge_getter_function)[source]¶

match_external_edges(graphs)[source]¶

perform_external_edge_identical_particle_combinatorics(graph)[source]¶: Creates combinatorics clones of the StateTransitionGraph in case of identical particles in the initial or final state. Only identical particles, which do not enter or exit the same node allow for combinatorics!

remove_conservation_law(interaction_settings, cons_law)[source]¶

remove_duplicate_solutions(results, remove_qns_list=[], ignore_qns_list=[])[source]¶

remove_qns_from_graph(graph, qn_list)[source]¶

require_interaction_property(ingoing_particle_name, interaction_qn, allowed_values)[source]¶

Closure, which can be used as a filter function in filter_graphs().

It selects graphs based on a requirement on the property of specific interaction nodes.

Parameters

ingoing_particle_name (str) – name of particle, used to find nodes which have a particle with this name as “ingoing”
interaction_qn (InteractionQuantumNumberNames) – interaction quantum number
allowed_values (list) – list of allowed values, that the interaction quantum number may take

Returns

True if the graph has nodes with an ingoing particle of the given name, and the graph fullfills the quantum number requirement
False otherwise

Return type

bool