Presently under construction in Lund, Sweden, the European Spallation Source (ESS) will
be the world's brightest neutron source. As such, it has the potential for a particle physics …

This paper reviews the puzzles in modern neutron lifetime measurements and related
unitarity issues in the CKM matrix. It is not a comprehensive and unbiased compilation of all …

Dark matter (DM) is one of the most critical questions to be understood and answered in
fundamental physics today. Observations with varied astronomical and cosmological …

To increase the storage time of ultracold neutrons (UCNs) inside the material traps it is
promising to cover the trap walls by liquid He 4, a material which does not absorb neutrons …

Major advances in the precision of magnetic measurements bring us closer to quantum
detection of individual spins at the single-atom level. On the quest for reducing both classical …

The neutron's lifetime is a critical parameter in the standard model. Its measurements,
particularly measurements using both beamline and ultracold neutron storage techniques …

Neutron lifetime is a critical parameter in the Standard Model. Its measurements using,
particularly, the beamline and ultracold neutron storage techniques reveals serious tension …