297 research outputs found
Potential for measurement of the tensor electric and magnetic polarizabilities of the deuteron in storage-ring experiments with polarized beams
Measurement of the tensor electric and magnetic polarizabilities of the
deuteron is of great interest, especially in connection with the possibilities
of COSY and GSI. These polarizabilities can be measured in storage rings by the
frozen spin method providing a disappearance of g-2 precession. This method
will be used in the planned deuteron electric-dipole-moment experiment in
storage rings. The tensor electric polarizability of the deuteron significantly
influences the buildup of the vertical polarization in the above experiment.
The spin interactions depending on the electric dipole moment, the tensor
electric polarizability, and main systematical errors caused by field
misalignments have very different symmetries. For the considered experimental
conditions, the sensitivity to the deuteron EDM of cm
corresponds to measuring the both of tensor polarizabilities with an accuracy
of cm. This
conservative estimate can be improved by excluding the systematical error
caused by the field instability which is negligible for the measurement of the
tensor polarizabilities. To find the tensor magnetic polarizability, the
horizontal components of the polarization vector should be measured.Comment: 11 pages, the extended version of the paper prepared for the
Proceedings of 19th International Spin Physics Symposium (September 27 -
October 2, 2010, Julich, Germany
Spin rotation and depolarization of high-energy particles in crystals at Hadron Collider (LHC) and Future Circular Collider (FCC) energies and the possibility to measure the anomalous magnetic moments of short-lived particles
We study the phenomena of spin rotation and depolarization of high-energy
particles in crystals in the range of high energies that will be available at
Hadron Collider (LHC) and Future Circular Collider (FCC). It is shown that
these phenomena can be used to measure the anomalous magnetic moments of
short-lived particles in this range of energies. We also demonstrate that the
phenomenon of particle spin depolarization in crystals provides a unique
possibility of measuring the anomalous magnetic moment of negatively-charged
particles (e.g., beauty baryons), for which the channeling effect is hampered
due to far more rapid dechanneling as compared to that for positively-charged
particles. Channeling of particles in either straight or bent crystals with
polarized nuclei could be used for polarization and the analysis thereof of
high-energy particles.Comment: 34 pages, 1 figur
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