31 research outputs found
Observation of low-lying isomeric states in Cs: a new avenue for dark matter and solar neutrino detection in xenon detectors
We report on new measurements establishing the existence of low-lying
isomeric states in Cs using rays produced in
Xe(p,n)Cs reactions. Two states with ~ns
lifetimes are placed in the decay sequence of the Cs levels that are
populated in charged-current interactions of solar neutrinos and fermionic dark
matter with Xe. Xenon-based experiments can therefore exploit a
delayed-coincidence tag of these interactions, greatly suppressing backgrounds
to enable spectroscopic studies of solar neutrinos and dark matter.Comment: Supplemental material available upon request. Version accepted by
Phys.Rev.Let