A Simultaneous Solution to the ^6Li and ^7Li Big Bang Nucleosynthesis Problems from a Long-Lived Negatively-Charged Leptonic Particle

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dc.creatorKusakabe, Motohiko
dc.creatorKajino, Toshitaka
dc.creatorBoyd, Richard N.
dc.creatorYoshida, Takashi
dc.creatorMathews, Grant J.
dc.date2007-11-24
dc.date.accessioned2026-07-07T12:13:55Z
dc.date.available2026-07-07T12:13:55Z
dc.descriptionThe $^6$Li abundance observed in metal poor halo stars exhibits a plateau similar to that for $^7$Li suggesting a primordial origin. However, the observed abundance of $^6$Li is a factor of $10^3$ larger and that of $^7$Li is a factor of 3 lower than the abundances predicted in the standard big bang when the baryon-to-photon ratio is fixed by WMAP. Here we show that both of these abundance anomalies can be explained by the existence of a long-lived massive, negatively-charged leptonic particle during nucleosynthesis. Such particles would capture onto the synthesized nuclei thereby reducing the reaction Coulomb barriers and opening new transfer reaction possibilities, and catalyzing a second round of big bang nucleosynthesis. This novel solution to both of the Li problems can be achieved with or without the additional effects of stellar destruction.
dc.description6 pages, 2 figures, to be published in Physical Review D
dc.identifierhttps://arxiv.org/abs/0711.3854
dc.identifierhttp://arxiv.org/abs/0711.3854
dc.identifierPhys.Rev.D76:121302,2007
dc.identifierdoi:10.1103/PhysRevD.76.121302
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/211014
dc.subjectAstrophysics
dc.titleA Simultaneous Solution to the ^6Li and ^7Li Big Bang Nucleosynthesis Problems from a Long-Lived Negatively-Charged Leptonic Particle
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