WDs and neutron stars are far-reaching and multi-faceted laboratories in the hunt for dark
matter. We review detection prospects of wave-like, particulate, macroscopic and black hole …

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 …

The fundamental nature of dark matter is entirely unknown. A compelling candidate is twin
Higgs mirror matter, invisible hidden-sector cousins of the Standard Model particles and …

The neutron lifetime anomaly has been used to motivate the introduction of new physics with
hidden-sector particles coupled to baryon number, and on which neutron stars provide …

An unexplained> 4 σ discrepancy persists between “beam” and “bottle” measurements of
the neutron lifetime. A new model proposed that conversions of neutrons n into mirror …

Mirror sectors have been proposed to address the problems of dark matter, baryogenesis,
and the neutron lifetime anomaly. In this work we study a new, powerful probe of mirror …

The oscillation of neutron n into mirror neutron\(n'\), its mass degenerate partner from dark
mirror sector, can gradually transform the neutron stars into the mixed stars consisting in part …

Strange stars ought to exist in the universe according to the strange quark matter hypothesis,
which states that matter made of roughly equal numbers of up, down, and strange quarks …

We examine the cosmological and astrophysical signatures of a “dark baryon,” a neutral
fermion that mixes with the neutron. As the mixing is through a higher-dimensional operator …

While the international nEDM collaboration at the Paul Scherrer Institut (PSI) took data in
2017 that covered a considerable fraction of the parameter space of claimed potential …