particle

This module defines a particle as a collection of quantum numbers and things related to this

class AbstractQNConverter

Bases: abc.ABC

abstract convert_to_dict(qn_type, qn_value)

abstract parse_from_dict(data_dict)

class CompareGraphElementPropertiesFunctor(ignored_qn_list=[])

Bases: object

__call__(props1, props2)

Call self as a function.

compare_qn_numbers(qns1, qns2)

class FloatQNConverter

Bases: expertsystem.state.particle.AbstractQNConverter

class_label = 'Class'

convert_to_dict(qn_type, qn_value)

parse_from_dict(data_dict)

type_label = 'Type'

value_label = 'Value'

class IntQNConverter

Bases: expertsystem.state.particle.AbstractQNConverter

class_label = 'Class'

convert_to_dict(qn_type, qn_value)

parse_from_dict(data_dict)

type_label = 'Type'

value_label = 'Value'

class InteractionQuantumNumberNames

Bases: enum.Enum

An enumeration.

L = 1

ParityPrefactor = 3

S = 2

class LABELS

Bases: enum.Enum

An enumeration.

Class = 1

Component = 2

DecayInfo = 3

Name = 4

Parameter = 5

Pid = 6

PreFactor = 7

Projection = 8

QuantumNumber = 9

Type = 10

Value = 11

class ParticleDecayPropertyNames

Bases: enum.Enum

definition of quantum number names for interaction nodes

Width = 1

class ParticlePropertyNames

Bases: enum.Enum

definition of decay properties names of particles

Mass = 2

Pid = 1

class QuantumNumberClasses

Bases: enum.Enum

Definition of quantum number names for states.

Float = 2

Int = 1

Spin = 3

class Spin(mag, proj)

Bases: object

Simple struct-like class defining spin as a magnitude plus the projection

__eq__(other)

define the equal operator for the spin class, which is needed for equality checks of states in certain rules

magnitude()

projection()

class SpinQNConverter(parse_projection=True)

Bases: expertsystem.state.particle.AbstractQNConverter

class_label = 'Class'

convert_to_dict(qn_type, qn_value)

parse_from_dict(data_dict)

proj_label = 'Projection'

type_label = 'Type'

value_label = 'Value'

class StateQuantumNumberNames

Bases: enum.Enum

definition of properties names of particles

BaryonNumber = 1

Bottomness = 2

Charge = 3

Charm = 4

Cparity = 5

ElectronLN = 6

Gparity = 7

IsoSpin = 8

MuonLN = 9

Parity = 10

Spin = 11

Strangeness = 12

TauLN = 13

Topness = 14

add_to_particle_list(particle)

Add a particle dictionary object to the particle_list dictionary. The key will be extracted from the particle name (XML tag @Name). If the key already exists, the entry in particle_list will be overwritten by this one.

calculate_combinatorics(edges, state_particles, attached_external_edges_per_node, allowed_particle_groupings=[])

check_if_spin_projections_set(state)

check_qns_equal(qns_state, qns_particle)

compare_qns(qn_dict, qn_dict2)

create_spin_domain(list_of_magnitudes, set_projection_zero=False)

get_interaction_property(interaction_properties, qn_name, converter=None)

get_particle_candidates_for_state(state, allowed_particle_list)

get_particle_copy_by_name(particle_name)

Get a deepcopy of a particle from the particle_list dictionary so you can manipulate it and add it to the particle data base.

get_particle_property(particle_properties, qn_name, converter=None)

get_particle_with_name(particle_name)

Deprecated since version 0.2.0: particle_list has become a dictionary, so you can already access its entries with a string index.

initialize_allowed_particle_list(allowed_particle_list)

initialize_edges(graph, edge_particle_dict)

initialize_external_edge_lists(attached_external_edges_per_node, edge_particle_mapping)

initialize_graph(graph, initial_state, final_state, final_state_groupings)

initialize_graphs_with_particles(graphs, allowed_particle_list=[])

is_boson(qn_dict)

load_particle_list_from_xml(file_path)

Add entries to the particle_list from definitions in an XML file.

By default, the expert system loads the particle_list from the XML file particle_list.xml located in the ComPWA module. Use load_particle_list_from_xml to append to the particle_list.

Note

If a particle name in the loaded XML file already exists in the particle_list, the one in the particle_list will be overwritten.

Return type

None

load_particle_list_from_yaml(file_path)

Use load_particle_list_from_yaml to append to the particle_list from a YAML file.

Note

If a particle name in the YAML file already exists in the particle_list instance, the one in particle_list will be overwritten.

Return type

None

merge_qn_props(qns_state, qns_particle)

populate_edge_with_spin_projections(graph, edge_id, spin_projections)

write_particle_list_to_xml(file_path)

Write particle_list instance to XML file.

Return type

None

write_particle_list_to_yaml(file_path)

Write particle_list instance to a YAML file.

Return type

None