Statements (13)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
physical phenomenon
|
| gptkbp:affects |
CP violation in strong interactions
|
| gptkbp:alsoKnownAs |
theta angle
|
| gptkbp:constrainedBy |
neutron electric dipole moment
|
| gptkbp:expectedValue |
approximately zero
|
| https://www.w3.org/2000/01/rdf-schema#label |
QCD vacuum angle
|
| gptkbp:relatedTo |
gptkb:quantum_chromodynamics
|
| gptkbp:solutionProposed |
gptkb:axion
gptkb:Peccei–Quinn_mechanism |
| gptkbp:symbol |
θ
|
| gptkbp:type |
strong CP problem
|
| gptkbp:bfsParent |
gptkb:QCD_(Quantum_Chromodynamics)
|
| gptkbp:bfsLayer |
7
|