标题： 一种WIMP模型的表征研究 显示英文标题

标题： A Phenomenological Study of WIMP Models

摘要： 在本论文中，我们研究了弱相互作用大质量粒子（WIMP）暗物质（DM）的各种可能性及其影响。这些可能性很重要，因为它们在直接探测等实验的严格限制下对WIMP DM的可行性提出了挑战。我们首先分析了一种具有轴子样粒子（ALP）通道的费米子暗物质可能性。我们考虑了与中微子和ALP数据相关的理论和实验限制，在一定质量范围内找到了允许的参数空间。这种可能性通过ALP通道解决了WIMP DM缺乏直接探测的问题。此外，我们检查了来自HESS和Fermi-LAT数据的光子信号限制。接下来，我们研究了一种由标量和费米子组成的双组分暗物质可能性，采用了与我们之前工作相似的方法。这种简单的可能性只需要一些额外的场和对称性就能解释中微子质量和暗物质候选者。通过找到满足各种限制条件的参数空间，如残留密度、直接探测和不可见希格斯宽度，我们表明标量和费米子粒子都可以作为DM。这种可能性是一致的，并提供了丰富的现象学谱，可以通过基于对撞机的实验进行测试。在我们的最终工作中，我们去除了额外的Z2对称性，并在我们的双组分模型中添加了一个新的赝标量粒子。我们对该赝标量粒子进行了多种暗物质和非暗物质相关限制的测试，包括暗物质寿命限制、普朗克限制、来自不同靶材料的直接探测限制以及不可见希格斯宽度。这种可能性在我们的赝标量DM方面表现出显著的参数空间，同时符合理论和实验限制。 显示英文摘要

摘要： In this thesis, we investigate various possibilities of Weakly Interacting Massive Particle (WIMP) dark matter (DM) and their implications. These possibilities are important because they challenge the viability of WIMP DM in light of tight constraints from experiments such as direct detection. We begin by analyzing a fermion dark matter possibility with an axion-like particle (ALP) portal. We consider theoretical and experimental limits related to neutrino and ALP data within a certain mass range, and we find the allowed parameter space. This possibility resolves the problem of the lack of direct detection of WIMP DM through the ALP portal. Furthermore, we examine the limits on photon signals from HESS and Fermi-LAT data. Next, we look at a two-component scalar and fermion dark matter possibility, following a similar approach to our previous work. This simple possibility requires only a few additional fields and symmetries to explain neutrino mass and dark matter candidates. By finding parameter space that satisfies various bounds, such as relic density, direct detection, and invisible Higgs width, we show that both scalar and fermion particles can serve as DM. This possibility is consistent and offers a rich spectrum of phenomenology that can be tested through collider-based experiments. In our final work, we removie the extra Z2 symmetry and added a new pseudoscalar particle in our two compoent model. We test this pseudoscalar particle against multiple DM and non-DM related bounds, including DM lifetime bound, Planck bound, direct-detection limits from various target materials, and invisible Higgs width. The possibility exhibits a significant parameter space for our pseudoscalar DM while being in agreement with theoretical and experimental limits.