TY  - JOUR
PB  - SciPost Foundation
DO  - 10.21468/SciPostPhysProc.12.052
TI  - Ruling out QCD phase transition as a PBH origin of LIGO/Virgo events
PY  - 2023/07/05
UR  - https://www.scipost.org/SciPostPhysProc.12.052
JF  - SciPost Physics Proceedings
JA  - SciPost Phys. Proc.
VL  - 
IS  - 12
SP  - 052
A1  - Iguaz Juan, Joaquim
AB  - The best-motivated scenario for a sizable primordial black hole (PBH) contribution to the LIGO/Virgo binary black hole mergers invokes the QCD phase transition, which naturally enhances the probability to form PBH with masses of stellar scale. We reconsider the expected mass function assuming a CMB-like primordial spectrum and associated not only to the QCD phase transition proper, but also the $e^{+}e^{-}$ annihilation process, and analyze the constraints on this scenario from a number of observations. We find that the scenario is not viable, unless an ad hoc mass evolution for the PBH mass function and a cutoff in power-spectrum very close to the QCD scale are introduced by hand.
ER  -

@Article{10.21468/SciPostPhysProc.12.052,
	title={{Ruling out QCD phase transition as a PBH origin of LIGO/Virgo events}},
	author={Joaquim Iguaz Juan},
	journal={SciPost Phys. Proc.},
	pages={052},
	year={2023},
	publisher={SciPost},
	doi={10.21468/SciPostPhysProc.12.052},
	url={https://scipost.org/10.21468/SciPostPhysProc.12.052},
}