Bodeker, D., Kuhnel, F., Oldengott, I. M., & Schwarz, D. J. (2021). Lepton flavor asymmetries and the mass spectrum of primordial black holes. Phys. Rev. D, 103(6), 063506–6pp.
Abstract: We study the influence of lepton flavor asymmetries on the formation and the mass spectrum of primordial black holes. We estimate the detectability of their mergers with LIGO/Virgo and show that the currently published gravitational wave events may actually be described by a primordial black hole spectrum from nonzero asymmetries. We suggest to use gravitational-wave astronomy as a novel tool to probe how lepton flavor asymmetric the Universe has been before the onset of neutrino oscillations.
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