期刊
PHYSICAL REVIEW D
卷 86, 期 6, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.86.063501
关键词
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资金
- ERC
- National Science Foundation [CDI 1124403]
- VACOUL Program
- French Agence Nationale pour la Recherche (ANR)
- STFC [ST/H002456/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/H002456/1] Funding Source: researchfish
We present a parametrized study of the effects of free thermal neutron injection on primordial nucleosynthesis, where both the rate and the time scale of injection are varied. This generic approach is found to yield a successful solution for reducing the Li-7 abundance without causing significant problems to other elemental abundances. Our analysis demonstrates that hadronic injection, possibly due to decays or annihilations of dark matter particles with a mass of about 1 to 30 GeV, provides a possible solution to an outstanding problem in the standard big bang model.
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