Speaker
Fabio Iocco
(Università di Napoli "Federico II")
Description
We investigate the scenario in which primordial black holes (PBHs) with masses MPBH ≲ 109g undergo Hawking evaporation, around the Big-Bang nucleosynthesis (BBN) epoch. The evaporation process modifies the Universe’s expansion rate and the baryon-to-photon ratio, leading to an
alteration of the primordial abundance of light nuclei. We present upper bounds for the PBH relative abundance at formation in the range 108
g ≲ MPBH ≲ 109 g, providing the strongest constraints existing to-date
in this mass range.
Primary authors
Mr
Andrea Boccia
(SSM Napoli)
Fabio Iocco
(Università di Napoli "Federico II")
Luca Visinelli
(Shanghai Jiao Tong University)
