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arXiv 0903.4010hep-phastro-ph.COastro-ph.HE
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标量多重态暗物质

Scalar Multiplet Dark Matter

T. Hambye, F. -S. Ling, L. Lopez Honorez, J. Rocher

摘要:

我们进行了一个系统的研究与模型的现象,其中的暗物质包括在中性分量的标量SU(2)_L n-uplet,直到n=7。如果只包括纯规范引起的湮灭截面,我们知道这样的粒子提供了很好的暗物质候选者,导致观察到的暗物质遗迹丰度为它们的质量在TeV尺度附近的特定值。我们表明,这些值实际上成为范围内的值-我们确定-如果考虑到在这些模型中出现的各种标量耦合引起的湮灭。这导致预测的直接和间接的检测签名作为这些范围内的暗物质质量的函数。两者都可以大大提高了四次耦合的贡献。我们还解释了如何,如果一个添加右手中微子的标量偶的情况下,这种分析的结果允许有一个可行的暗物质的候选人,成功的中微子质量的产生,并leptogenesis在一个特别小的方式与所有新的物理在TeV的规模。

英文摘要:

We perform a systematic study of the phenomenology associated to models where the dark matter consists in the neutral component of a scalar SU(2)_L n-uplet, up to n=7. If one includes only the pure gauge induced annihilation cross-sections it is known that such particles provide good dark matter candidates, leading to the observed dark matter relic abundance for a particular value of their mass around the TeV scale. We show that these values actually become ranges of values -which we determine- if one takes into account the annihilations induced by the various scalar couplings appearing in these models. This leads to predictions for both direct and indirect detection signatures as a function of the dark matter mass within these ranges. Both can be largely enhanced by the quartic coupling contributions. We also explain how, if one adds right-handed neutrinos to the scalar doublet case, the results of this analysis allow to have altogether a viable dark matter candidate, successful generation of neutrino masses, and leptogenesis in a particularly minimal way with all new physics at the TeV scale.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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