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RESEARCH PRODUCT
Weak quadrupole moments
Victor V. FlambaumB. G. C. Lackenbysubject
Nuclear and High Energy PhysicsNuclear TheoryAtomic Physics (physics.atom-ph)Lorentz transformationNuclear TheoryFOS: Physical sciencesElectronLorentz covarianceWeak interaction01 natural sciencesPhysics - Atomic PhysicsNuclear Theory (nucl-th)symbols.namesakeHigh Energy Physics - Phenomenology (hep-ph)0103 physical sciencesNeutronPhysics::Atomic Physics010306 general physicsPhysics010308 nuclear & particles physicsParity (physics)High Energy Physics - PhenomenologyQuadrupoleAtomic nucleussymbolsPhysics::Accelerator PhysicsAtomic physicsdescription
Collective effects in deformed atomic nuclei present possible avenues of study on the non-spherical distribution of neutrons and the violation of the local Lorentz invariance. We introduce the weak quadrupole moment of nuclei, related to the quadrupole distribution of the weak charge in the nucleus. The weak quadrupole moment produces tensor weak interaction between the nucleus and electrons and can be observed in atomic and molecular experiments measuring parity nonconservation. The dominating contribution to the weak quadrupole is given by the quadrupole moment of the neutron distribution, therefore, corresponding experiments should allow one to measure the neutron quadrupoles. Using the deformed oscillator model and the Schmidt model we calculate the quadrupole distributions of neutrons, $Q_{n}$, the weak quadrupole moments ,$Q_{W}^{(2)}$, and the Lorentz Innvariance violating energy shifts in $^{9}$Be, $^{21}$Ne , $^{27}$Al, $^{131}$Xe, $^{133}$Cs, $^{151}$Eu, $^{153}$Eu, $^{163}$Dy, $^{167}$Er, $^{173}$Yb, $^{177}$Hf, $^{179}$Hf, $^{181}$Ta, $^{201}$Hg and $^{229}$Th.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-05-07 | Journal of Physics G: Nuclear and Particle Physics |