527 citations · 6.2k across the 99 of their papers we have counts for
9 papers · 1 filter
Cosmological Neutron Stars Produce Diffuse Axion X-Ray Signatures
Orion Ning, Kailash Raman, Benjamin R. Safdi
Axion-like particles can be abundantly produced through scattering processes in the cores of neutron stars (NSs). If they are ultralight ( eV), then they can…
Clearing up the Strong problem
Joshua N. Benabou, Anson Hook, Claudio Andrea Manzari +2
The absence of a neutron electric dipole moment (EDM) constrains the quantum chromodynamics (QCD) theta angle to be less than one part in ten billion, posing the Strong proble…
Axion lines from nuclear de-excitations in galactic stellar populations
Orion Ning, Anupam Ray, Benjamin R. Safdi
We show that mono-energetic axions are produced in abundance through nuclear de-excitations in nearby galaxies such as M87, which is the central galaxy of the Virgo cluster, and th…
Wino and Real Minimal Dark Matter Excluded by Fermi Gamma-Ray Observations
Benjamin R. Safdi, Weishuang Linda Xu
We show that minimal, fermionic dark matter (DM) models in the -dimensional representation of the weak force with zero hypercharge that make up 100% of the DM under the standard…
Discovering the Higgsino at CTAO-North within the Decade
Shotaro Abe, Tomohiro Inada, Emmanuel Moulin +3
We demonstrate that higgsino dark matter (DM) could be discovered within the next few years using the Cherenkov Telescope Array Observatory's soon-to-be-operational northern site (…
String Theory and Grand Unification Suggest a Sub-Microelectronvolt QCD Axion
Joshua N. Benabou, Katherine Fraser, Mario Reig +1
Axions, grand unification, and string theory are each compelling extensions of the Standard Model. We show that combining these frameworks imposes strong constraints on the QCD axi…