Statements (14)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
physics problem
|
| gptkbp:concerns |
CP violation
neutron electric dipole moment theta parameter |
| gptkbp:field |
gptkb:quantum_chromodynamics
|
| https://www.w3.org/2000/01/rdf-schema#label |
QCD theta problem
|
| gptkbp:openProblem |
why theta is so small
|
| gptkbp:originatedIn |
gptkb:QCD_Lagrangian
|
| gptkbp:relatedTo |
strong CP problem
|
| gptkbp:solutionProposed |
gptkb:axion
Peccei-Quinn mechanism |
| gptkbp:thetaParameterValue |
experimentally constrained to be very small
|
| gptkbp:bfsParent |
gptkb:QCD_(Quantum_Chromodynamics)
|
| gptkbp:bfsLayer |
7
|