Neutron stars exclude light dark baryons
High Energy Physics - Phenomenology
2018-08-15 v1 Cosmology and Nongalactic Astrophysics
Nuclear Experiment
Nuclear Theory
Abstract
Exotic new particles carrying baryon number and with mass of order the nucleon mass have been proposed for various reasons including baryogenesis, dark matter, mirror worlds, and the neutron lifetime puzzle. We show that the existence of neutron stars with mass greater than 0.7 places severe constraints on such particles, requiring them to be heavier than 1.2 GeV or to have strongly repulsive self-interactions.
Cite
@article{arxiv.1802.08244,
title = {Neutron stars exclude light dark baryons},
author = {David McKeen and Ann E. Nelson and Sanjay Reddy and Dake Zhou},
journal= {arXiv preprint arXiv:1802.08244},
year = {2018}
}
Comments
5 pages, 1 figure