Speaker
Nirmal Raj
(TRIUMF)
Description
I examine cosmological and astrophysical signatures of a “dark baryon,” a neutral fermion that mixes with the neutron, deriving new, powerful limits from primordial nucleosynthesis and the cosmic microwave background. Additionally, neutrons in a neutron star could decay slowly to dark baryons, providing a novel source of heat that is constrained by measurements of pulsar temperatures. I identify parameter space where the dark baryon can be a viable dark matter candidate and discuss promising avenues for probing it.
Talk based on https://arxiv.org/abs/2012.09865, https://arxiv.org/abs/2006.15140.
Author
Nirmal Raj
(TRIUMF)
Co-authors
David McKeen
Maxim Pospelov
