http://arxiv.org/abs/2007.00650
We pioneer the black hole mass gap as a powerful new tool for constraining new particles. A new particle that couples to the Standard Model—such as an axion—acts as an additional source of loss in the cores of population-III stars, suppressing mass lost due to winds and quenching the pair-instability. This results in heavier astrophysical black holes. As an example, using stellar simulations we show that the solar axion explanation of the recent XENON1T excess implies astrophysical black holes of ~ 56 MS, squarely within the black hole mass gap predicted by the Standard Model.
D. Croon, S. McDermott and J. Sakstein
Thu, 2 Jul 20
57/64
Comments: 5 pages, 3 figures
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