Conveners
分会报告（理论）
- 丁 然
分会报告（理论）
- 陈 绍龙
分会报告（理论）
- 祝 斌
分会报告（理论）
- 周 也铃
分会报告（理论）
- 汤 勇
Searching for dark photon dark matter with radio telescopes
Celestial bodies are well motivated laboratories for dark matter searches. As an example, dark matter may scatter multiple times in the Earth and get trapped by the Earth's gravitational potential. These dark matter could subsequently annihilate into Standard Model particles and heat the Earth. Taking advantage of Monte-Carlo simulations with detailed analytical computations, we obtain...
Dark Matter is an important direction for pursuing physics beyond the Standard Model. There are already various experiments searching for the Dark Matter. However, for the Freeze-In Dark Matter, due to the extremely tiny coupling between the dark matter and SM particles, there will be no sensitivity for the DM experiments. On the other hand, we actually have no direct evidence for the...
原子核无中微子双贝塔衰变是粒子物理与原子核物理研究领域的前沿，是可能突破粒子物理标准模型的重要方向。目前，国内外有多家实验组都在致力于寻找无中微子双贝塔衰变过程。在理论研究方面，相关原子核矩阵元的可靠计算是关键也是难点。为实现可靠的原子核矩阵元计算，我们通过结合先进的组态相互作用壳模型和相对论密度泛函，发展了相对论组态相互作用密度泛函理论。在本次报告中，我将介绍新发展理论方法的核心思想、优势以及在原子核无中微子双贝塔衰变研究方面的最新进展，并给出原子核三轴形变自由度在核矩阵元可靠描述方面的重要作用。
Singlino Dark Matter in General Next-to-Minimal Supersymmetric Standard Model
The Galactic center gamma-ray excess (GCE) is a long-standing unsolved problem. One of candidate solutions, the dark matter (DM) annihilation, has been recently tested with other astrophysical observations, such as AMS-02 electron-positron spectra, Fermi Dwarf spheroidal galaxies gamma-ray data, and so on. By assuming that the DM particles annihilate purely into a normal charged fermion pair,...
Boosted dark matter is a popular scenario in DM direct detection. I will talk about the impact of quasi-elastic and deep inelastic scattering of boosted DM with the nucleus, and maybe also the prospects of searching for boosted DM by using plasmon effect (up to our progress).
我将介绍一些新物理基于引力波探测的研究：包含在LIGO对早期宇宙相变、宇宙弦引力波的直接实验探测，对超轻暗物质如暗光子、宏观暗物质如原初黑洞和孤子星的探测等。
We explore the potential of precision cosmological data to study non-minimal dark sectors by updating the cosmological constraint on the mirror twin Higgs model (MTH). The MTH model addresses the little Higgs hierarchy problem by introducing dark sector particles. In this work, we perform a Bayesian global analysis that includes the latest cosmic shear measurement from the DES three-year...
Although searches for dark matter have lasted for decades, no convincing signal has been found without ambiguity in underground detections, cosmic ray observations, and collider experiments. We show by example that gravitational wave (GW) observations can be a supplement to dark matter detections if the production of dark matter follows a strong first-order cosmological phase transition. We...
基于CDEX-10在中国锦屏地下实验室中p型点电极阈值为160eVee高纯锗探测器205.4公斤天实验数据，给出了质量范围在1E15至7E16g原初黑洞（PBH）蒸发keV至MeV轻暗物质粒子（χ）的搜寻结果。在目前PBH限制丰度下，结果排除χ-核子弹性散射截面区域有：对于质量为5E15 g的PBH, 1 keV到24 MeV的χ对应3.4E-32到2.3E-29 cm2；对于质量为7E16 g的PBH， 1 keV到0.6 MeV的χ对应1.1E-28到7.6E-28 cm2。如果将来能够测定χ-核子弹性散射截面，那么PBH的丰度可能会受到χ蒸发的严格限制。
