Speaker
Prof.
Hirohiko Shimizu
(Nagoya University)
Description
The neutron absorption in eV region is dominated by capture process via
well-resolved compound states. The breaking of the spatial inversion symmetry
is known to be largely enhanced in p-wave compound resonances according
to the interference in the entrance channel between neighboring resonances with
different angular momentum of incident neutrons. The entrance-channel interference
naturally implies the interference between components with different channel
spins. Such interference is theoretically predicted to cause an enhancement in
the observation of T-odd spin correlation terms which may contained in mesonnucleon
interactions. Assuming the CPT-theorem, the enhanced sensitivity to Tviolation
introduces a new type of CP-violation search beyond the standard model,
which may be competitive with other experimental searches such as the neutron
electric-dipole-moment measurement. We discuss the study of the interference
mechanism to quantify the experimental sensitivity to T-violation and discuss possible
experiments with the pulsed neutron beam from intense spallation neutron
sources.
Authors
Collaboration NOPTREX
(---)
Prof.
Hirohiko Shimizu
(Nagoya University)
