Direct detection of vector dark matter through electromagnetic multipoles
Direct detection of vector dark matter through electromagnetic multipoles
复制标题
DOI：
10.1088/1475-7516/2020/10/015
复制
发表时间：
2020-07
影响因子：
6.4
通讯作者：
J. Hisano;A. Ibarra;R. Nagai
中科院分区：
文献类型：
--
作者：
J. Hisano;A. Ibarra;R. Nagai
暗物质粒子，即使它们是电中性的，也可以通过它们的电磁多极矩与标准模型粒子相互作用。本文重点研究了复向量候选暗物质的电磁特性，它可以用七种形式因子来描述。我们计算了由于暗物质和核多极矩的相互作用导致的与原子核的微分散射截面，并从直接探测实验中未观测到暗物质信号得出了前者的上限。我们还提出了一个模型，其中暗物质粒子是暗SU(2)对称的规范玻色子，它包含重的新费米子，在暗SU(2)对称和电磁U(1)对称下带电。新费米子在单回路级产生电磁多极矩，可在直接探测实验中产生可探测信号。
Dark matter particles, even if they are electrically neutral, could interact with the Standard Model particles via their electromagnetic multipole moments. In this paper, we focus on the electromagnetic properties of the complex vector dark matter candidate, which can be described by means of seven form factors. We calculate the differential scattering cross-section with nuclei due to the interactions of the dark matter and nuclear multipole moments, and we derive upper limits on the former from the non-observation of dark matter signals in direct detection experiments. We also present a model where the dark matter particle is a gauge boson of a dark SU(2) symmetry, and which contains heavy new fermions, charged both under the dark SU(2) symmetry and under the electromagnetic U(1) symmetry. The new fermions induce at the one loop level electromagnetic multipole moments, which could lead to detectable signals in direct detection experiments.