| Thème(s) : |
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| Titre : |
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Neutron injection during primordial nucleosynthesis alleviates the primordial 7Li problem |
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| Auteur : |
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D. Albornoz Vasquez1, A. Belikov1, A. Coc2, J. Silk1, E. Vangioni1 |
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| Laboratoire : |
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| équipe(s) de recherche : |
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CSNSM AN |
| Résumé : |
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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 7Li 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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| Type de publication : |
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Articles dans des revues avec comité de lecture |
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Date de publication
ou d'écriture : |
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08/2012 |
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| Nom du périodique : |
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| Physical Review D (Phys. Rev. D) |
| Publisher |
American Physical Society |
| ISSN |
1550-7998 (eISSN : 1550-2368) |
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| Volume : |
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86 |
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| Page/Article : |
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063501 |
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| Identifiant local : |
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CSNSM AN |
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| Classification PACS : |
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PACS numbers: 26.35.+c, 95.35.+d |
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| Commentaire : |
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6 pages, 4 figures. Accepted for publication in Phys.Rev.D |
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| Mot(s)-clé(s) : |
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Astrophysics - Cosmology and Extragalactic Astrophysics – Nuclear Theory |
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