Speaker
Dr
Beatrice Franke
(ax-Planck-Institute of Quantum Optics, Garching)
Description
Low energetic neutrons are stored inside the apparatus searching for a
permanent electric dipole moment of the neutron at the Paul Scherrer
Institute. Precisely comparing the Larmor precession frequency of the
neutrons spins to that of cohabiting 199Hg atoms spins, allows to
investigate possible exotic short range spin-dependent interactions.
Such an interaction could be mediated by axions or axion-like particles
and its strength is proportional to the CP-violating product of scalar and
pseudoscalar coupling constants gSgP.
Our measurement result confirms limits on gSgP from complementary
experiments with spin-polarized nuclei
in a model-independent way. Limits from other neutron experiments are
improved by up to two orders of magnitude in the interaction range of
10^-6 m < lambda < 10^-4 m.
Author
Dr
Beatrice Franke
(ax-Planck-Institute of Quantum Optics, Garching)
