Scalar multiplet dark matter
Scalar multiplet dark matter
复制标题
DOI：
10.1088/1126-6708/2009/07/090
复制
发表时间：
2009-03
影响因子：
5.4
通讯作者：
T. Hambye;F. Ling;L. Honorez;J. Rocher
中科院分区：
文献类型：
--
作者：
T. Hambye;F. Ling;L. Honorez;J. Rocher
我们系统地研究了暗物质位于标量SU(2)L n上部中性分量中的模型的唯象学，如果只包括纯规范诱导湮灭截面，我们就知道这样的粒子提供了很好的暗物质候选者，导致了观测到的暗物质遗迹丰度在TeV标度附近。我们表明，如果考虑到这些模型中出现的各种标量耦合引起的湮灭，这些值实际上就是我们确定的值的范围。这导致了对直接和间接探测信号作为这些范围内暗物质质量的函数的预测。这两者都可以通过四次耦合的贡献得到很大程度的增强。我们还解释了，如果将右手中微子加入标量双重态情况，这种分析的结果如何允许在TeV尺度上以一种特别微小的方式获得一个可行的暗物质候选者，成功地产生中微子质量，并以一种特别微小的方式发生瘦身。
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.