研究生: |
李銘杰 Li, Ming-Jie |
---|---|
論文名稱: |
向量暗物質與原子核散射截面之數值研究 Numerical Analysis of the Elastic Scattering Cross Section between Vector Dark Matter and Nucleus |
指導教授: |
陳傳仁
Chen, Chuan-Ren |
學位類別: |
碩士 Master |
系所名稱: |
物理學系 Department of Physics |
論文出版年: | 2016 |
畢業學年度: | 104 |
語文別: | 中文 |
論文頁數: | 32 |
中文關鍵詞: | 暗物質 、直接探測 、等效理論 、額外維度 |
英文關鍵詞: | Dark Matter, Direct Detection, Effective Theory, Universal Extra Dimension |
DOI URL: | https://doi.org/10.6345/NTNU202204296 |
論文種類: | 學術論文 |
相關次數: | 點閱:152 下載:48 |
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宇宙學的觀測結果暗示暗物質是存在的,暗物質的本質是粒子物理學和宇宙學一直想要解開的謎題。在眾多的超越標準模型(beyond the standard model)當中,WIMP(Weakly Interaction Massive Particle)是很好的暗物質候補,如果WIMP具有TeV尺度的質量、而且它在早期宇宙就存在到現在,殘留豐度(relic abundance)的理論預測就會和觀測結果一致。在這樣的推論之下, WIMP從一開始就是非相對性的、而且他在宇宙建構的時期是冷暗物質(cold dark matter)。WIMP最主要的候補是MSSM(minimal supersymmetric standard model)中最輕的超中性子(lightest neutralino,它是一種馬約拉納費米子(Majorana fermion)。此外,其他超越標準模型也預測了穩定(不衰變)的向量粒子(vector particles),例如在UED(universal extra dimension)傳播(propagate)的Kaluza-Klein光子(KK photon)以及LHT(littlest higgs model with T-parity)的T-odd heavy photon。本篇論文主要以KK photon為暗物質,探討向量暗物質與原子核的散射截面。
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