A possibility for precise Weinberg angle measurement in centrosymmetric crystals with axis
arXiv:cond-mat/0511003 · doi:10.1103/PhysRevA.73.032105
Abstract
We demonstrate that parity nonconserving interaction due to the nuclear weak charge Q_W leads to nonlinear magnetoelectric effect in centrosymmetric paramagnetic crystals. It is shown that the effect exists only in crystals with special symmetry axis k. Kinematically, the correlation (correction to energy) has the form H_PNC ~ Q_W (E,[B,k])(B,k), where B and E are the external magnetic and electric fields. This gives rise to magnetic induction M_PNC ~ Q_W {k(B,[k,E]) + [k,E](B,k)}. To be specific we consider rare-earth trifluorides and, in particular, dysprosium trifluoride which looks the most suitable for experiment. We estimate the optimal temperature for the experiment to be of a few kelvin. For the magnetic field B = 1 T and the electric field E = 10 kV/cm, the expected magnetic induction is 4 πM_PNC = 0.5 * 10^-11 G, six orders of magnitude larger than the best sensitivity currently under discussion. Dysprosium has several stable isotopes, and so, comparison of the effects for different isotopes provides possibility for precise measurement of the Weinberg angle.
arXiv comment7 pages, 1 figure, 2 tables; version 2 - added discussion of neutron distribution uncertainty
References in corpus (9)
- Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
- Measurement of the 6S-7S transition polarizablility in atomic cesium and an improved test of the standard model
- Solid State Systems for Electron Electric Dipole Moment and other Fundamental Measurements
- Measurement of the electron electric dipole moment using GdIG
- Reevaluation of the role of nuclear uncertainties in experiments on atomic parity violation with isotopic chains
- A suggested search for 207Pb nuclear Schiff moment in PbTiO3 ferroelectric
- An Atomic Linear Stark Shift Violating P But Not T Arising From the Electroweak Nuclear Anapole Moment
- Enhancement of the electron electric dipole moment in gadolinium garnets
- Manifestations of nuclear anapole moments in solid state NMR