论文标题
fenomenologíade Modelossupersimétricos：partículasy Materia Oscura
Fenomenología de modelos supersimétricos: partículas y materia oscura
论文作者
论文摘要
阐明暗物质（DM）的组成是粒子和星光粒子现象学中最重要的开放问题之一。在基本颗粒标准模型的最小超对称扩展的框架内，“ mu-from-nu超对称标准模型”，$μν$ ssm，求解$μ$ $ $ - 问题并再现中微子数据，仅添加涉及右手中性的耦合。在这种情况下，Graviton的超对称伴侣（称为Gravitino）成为天然DM候选者。在上述模型中工作，在本论文中，我们分析了腐烂的gravitino dm引起的伽马射线信号的检测，考虑了诸如$ \ textit {fermi} $ lat之类的实验。为此，所有Gravitino衰减都已考虑到以前的作品。即将到来的新一代伽马射线检测器的可能性激发了轴心的超对称伴侣Axino作为DM候选者的可能性。在本文中，已首次在$μν$ SSM的背景下进行了Axino DM。最后，已经研究了具有多组分DM的场景，重点是重力杆菌和Axinos作为DM成分共存。这种新颖的场景包括两个非常不同的案例，具有独特的特征：比gravitino轻，反之亦然。在前面提到的混合情况下，分析了未来MEV-GEV伽马射线望远镜的敏感性，Axino和Gravitino检测前景。在某些参数空间区域中，两个候选者都可以产生信号，因此，双线特征是一种吸烟枪，可以发现DM组成。
To elucidate the composition of dark matter (DM) is one of the most important open questions in particle and astroparticle phenomenology. Within the framework of minimal supersymmetric extensions of the standard model of fundamental particles, the `mu-from-nu supersymmetric standard model', $μν$SSM, solves the $μ$-problem and reproduces neutrino data, only adding couplings involving right-handed neutrinos. In this context, the supersymmetric partner of the graviton, known as gravitino, becomes a natural DM candidate. Working in the mentioned model, in this thesis we have analyzed the detection of gamma-ray signals arising from decaying gravitino DM considering experiments such as $\textit{Fermi}$-LAT. For this purpose all gravitino decays have been taken into account, complementing previous works. The possibility of an upcoming new generation of gamma-ray detectors has motivated the inclusion of axino, the supersymmetric partner of the axion, as a DM candidate. In this thesis, axino DM has been analyzed in the context of the $μν$SSM for the first time. Finally, scenarios with multicomponent DM have been studied, focusing on gravitinos and axinos coexisting as DM constituents. This novel scenario includes two very different cases with distinctive features: axino lighter than gravitino and vice versa. Considering the sensitivity of future MeV-GeV gamma-ray telescopes, axino and gravitino prospects of detection were analyzed in the mixed scenarios mentioned previously. In some parameter space regions, both candidates can produce a signal, therefore a double-line feature arises as a smoking gun that would uncover the DM composition.
