arXiv 1308.53472013-08-24hep-ph

超越标准模型：LHC现象学，后暴胀源的宇宙学和暗物质物理学

Beyond the Standard Model: LHC Phenomenology, Cosmology from Post-Inflationary Sources, and Dark Matter Physics

Brian J. Vlcek

备注：: Doctoral Dissertation, successfully defended on 12 Aug 2013

摘要：

这是本论文的目标，以证明超越标准模型，某些理论存在，解决观测和理论之间的冲突-冲突，如大质量中微子，暗物质，不稳定的希格斯真空，并在早期宇宙过剩的相对论自由度的普朗克观测。探索的理论包括一个D-膜启发的U（3）X Sp（1）X U（1）X U（1）的标准模型的扩展结构，其中我们展示了几个可能的观测值，可以在LHC检测到，并有能力稳定希格斯机制。扩展的模型也可以解释最近的普朗克数据，当加入到HST数据中时，给出了比标准结果高出ΔN = 0.574 +- 0.25的相对论自由度。还探讨了一种可能的非热暗物质模型来解释这一结果。最近对费米泡的观测结果表明，一个50 GeV的暗物质粒子湮灭成b b-棒的信号，其热平均湮灭截面对应于< σv> = 8 × 10^（-27）cm ^3/s，这激发了人们对史蒂文·温伯格提出的希格斯门模型的兴趣。还探讨了该模型的其他含义，例如它解释暗物质直接探测结果以及大型强子对撞机希格斯数据和普朗克数据的能力。粒子物理学是补充可能的随机引力波搜索的二阶全球相变的模型进行了探索。这些跃迁产生振幅量级为Ω_{gw} h ^2 = 10^（-24）-10 ^（-15）的引力波谱。此外，这种计算的技术进行了研究，希望提高这种晶格模拟所需的稳定性。

英文摘要：

It is the goal of this dissertation to demonstrate that beyond the standard model, certain theories exist which solve conflicts between observation and theory -- conflicts such as massive neutrinos, dark matter, unstable Higgs vacuum, and recent Planck observations of excess relativistic degrees of freedom in the early universe. Theories explored include a D-brane inspired construct of U(3) X Sp(1) X U(1) X U(1) extension of the standard model, in which we demonstrate several possible observables that may be detected at the LHC, and an ability to stabilize the Higgs mechanism. The extended model can also explain recent Planck data which, when added to HST data gives an excess of relativistic degrees of freedom of ΔN = 0.574 +- 0.25 above the standard result. Also explored is a possible non-thermal dark matter model for explanation of this result. Recent observations of Fermi bubble results indicate a signal of a 50 GeV dark matter particle annihilating into b b-bar, with a thermally averaged annihilation cross section corresponding to < σv> = 8 X 10^(-27) cm^3/s, spurs interest in a Higgs portal model suggested by Steven Weinberg. Other implications of this model are also explored such as its ability to explain dark matter direct detection results along with LHC Higgs data, and Planck data. Particle physics is complimented by possible stochastic gravitational wave searches for which a model of second order global phase transitions is explored. These transitions generate gravitational wave spectra with amplitudes of order Ω_{gw} h^2 = 10^(-24) - 10^(-15). Furthermore, techniques into such calculations are investigated in hopes to improve the stability required in such lattice simulations.

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。

摘要：

英文摘要：

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