Primordial He′ abundance implied by the mirror dark matter interpretation of the DAMA/LIBRA signal

Autor:	Paolo Ciarcelluti, Robert Foot
Rok vydání:	2010
Předmět:	Physics Big Bang Nuclear and High Energy Physics DAMA/LIBRA media_common.quotation_subject Dark matter Astronomy Astrophysics::Cosmology and Extragalactic Astrophysics Astrophysics Cosmology Universe Big Bang nucleosynthesis Nucleosynthesis DAMA/NaI media_common
Zdroj:	Physics Letters B. 690:462-465
ISSN:	0370-2693
DOI:	10.1016/j.physletb.2010.06.003
Popis:	We compute the primordial mirror helium He′ mass fraction emerging from Big Bang nucleosynthesis in the mirror sector of particles in the presence of kinetic mixing between photons and mirror photons. We explore the kinetic mixing parameter ( e ) values relevant for cosmology and which are also currently probed by the dark matter direct detection experiments. In particular, we find that for e ∼ 10 − 9 , as suggested by the DAMA/Libra and other experiments, a large HeO mass fraction ( Y He ′ ≈ 90 % ) is produced. Such a large value of the primordial He′ mass fraction will have important implications for the mirror dark matter interpretation of the direct detection experiments, as well as for the study of mirror star formation and evolution.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ee15e92c4226fe748060cc162fabdad3 https://doi.org/10.1016/j.physletb.2010.06.003 Zobrazit plný text záznamu Full Text from ScienceDirect