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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