High-resolution laser spectroscopy of radioactive molecules with CRIS : towards a new method for searches of New Physics Beyond the Standaard Model

The aim of this project is to expand the physics scope of the
Collinear Resonance Ionization Spectroscopy (CRIS) experiment at
ISOLDE-CERN, which we constructed and continuously upgraded in
the past decade in collaboration with the Univ. Manchester. This new
state-of-the art experiment has produced many successful highprecision
measurements of fundamental properties of very exotic
nuclei approaching the extremes of the nuclear chart. Our findings,
in collaboration with nuclear theory groups, have contributed to
unravel novel aspects of the nuclear force.
We now aim at exploring new horizons by further expanding the
capability of the CRIS set-up, towards high-precision laser
spectroscopy on radioactive molecules.
The recent successful production and study of radioactive RaF
monofluoride molecules at CRIS-ISOLDE (first worldwide) has
opened new perspectives to study nuclear observables that are not
accessible in atoms, or to prepare for new routes to search for
physics beyond the Standard Model of particle physics. In this
project we focus on the first hyperfine spectroscopy studies on
radioactive molecules that have been identified theoretically to have
the potential of being the most sensitive probes for future searches of
an electric dipole moment or to observe symmetry violations that are
not part of the Standard Model, and thus would point to new physics