Sneutrino Inflation with Asymmetric Dark Matter
Sneutrino Inflation with Asymmetric Dark Matter
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DOI：
10.1103/physrevd.84.055016
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发表时间：
2011-01
影响因子：
5
通讯作者：
N. Haba;S. Matsumoto;R. Sato
中科院分区：
文献类型：
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作者：
N. Haba;S. Matsumoto;R. Sato
已知非对称暗物质方案为重子和暗物质密度之间的宇宙符合问题提供了一个有趣的解决方案。在该方案中，暗物质的不对称性，这是翻译到暗物质密度在现在的宇宙，从早期宇宙中产生的B-L不对称性转移。另一方面，B-L不对称的产生被简单地假设，尽管许多产生机制被期望与该场景一致。我们表明，在sneutrino通货膨胀的情况下的不对称性的产生类似于不对称的暗物质的情况下，因为不可重正化的运营商，将B-L不对称性的暗物质的不对称性是自然地通过集成右手中微子。因此，关于宇宙学的重要问题（暴胀、暗物质的质量密度和宇宙的重子不对称性）以及中微子质量和混合都有一个统一的起源，即右手中微子。
The asymmetric dark matter scenario is known to give an interesting solution for the cosmic coincidence problem between baryon and dark matter densities. In the scenario, the dark matter asymmetry, which is translated to the dark matter density in the present universe, is transferred from the B-L asymmetry generated in the early universe. On the other hand, the generation of the B-L asymmetry is simply assumed, though many mechanisms for the generation are expected to be consistent with the scenario. We show that the generation of the asymmetry in the sneutrino inflation scenario works similarly to the asymmetric dark matter scenario, because the non-renormalizable operator which translates the B-L asymmetry to the dark matter asymmetry is naturally obtained by integrating right-handed neutrinos out. As a result, important issues concerning cosmology (inflation, the mass density of dark matter, and the baryon asymmetry of the universe) as well as neutrino masses and mixing have a unified origin, namely, the right-handed neutrinos.