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SUMMARY:Resolving the Cosmological $^7$Li Abundance Anomaly via Baryon Emi
 ssion from Evaporating Primordial Black Holes
DTSTART;VALUE=DATE-TIME:20261109T013000Z
DTEND;VALUE=DATE-TIME:20261109T020000Z
DTSTAMP;VALUE=DATE-TIME:20261023T124257Z
UID:indico-contribution-2928@indico.itp.ac.cn
DESCRIPTION:Speakers: Elena Arbuzova (Dubna State University and Novosibir
 sk State University)\nAlthough the standard model of Big Bang nucleosynthe
 sis successfully describes the formation of light elements\, it faces a we
 ll-known challenge: the observed abundance of lithium-7 is approximately t
 hree times lower than the theoretically predicted value. This work propose
 s a mechanism to resolve this primordial lithium deficit through the emiss
 ion of baryons by evaporating primordial black holes (PBHs). The lithium f
 raction can be efficiently reduced to the observed level via the transform
 ation of $^7$Li through nucleon capture by lithium nuclei. This capture pr
 ocess produces $^8$Li or $^8$Be isotopes\, which then rapidly decay into p
 airs of helium ($^4$He) nuclei. The analysis explores scenarios involving 
 both "hot" and "cool" PBHs.\n\nhttps://indico.itp.ac.cn/event/417/contribu
 tions/2928/
LOCATION:
URL:https://indico.itp.ac.cn/event/417/contributions/2928/
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