发表机构
School of Physical Sciences, Indian Association for the Cultivation of Science; Institute of Physics; Homi Bhabha National Institute; Department of Physics, Acharya Institute of Technology（印度科学培养协会物理科学学院; 物理研究所; 霍米·巴巴国立研究所; 阿查里亚理工学院物理系）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
该研究结合LUX-ZEPLIN核反冲事件观测，探讨利用Sgr A*等区域伽马射线探测NMSSM中质量超200 GeV的亚TeV单中微子暗物质的前景。
AI 中文摘要
我们研究了银河系超大质量黑洞（SMBH）周围的暗物质密度尖峰对次最小超对称标准模型（NMSSM）中由单中微子主导的中性ino暗物质可探测性的影响，恒星质量黑洞（sBH）周围类似的密度增强（即微型尖峰）也已被考虑。这类暗物质（DM）候选体在常规暗物质晕中通常会产生微弱的间接探测信号；此外，类单中微子的最轻超对称粒子（LSP）很难在大型强子对撞机（LHC）或直接DM探测实验中被探测到。另外，最近LUX-ZEPLIN观测到的248 keV核反冲事件可能暗示存在质量超过200 GeV的单中微子可容纳的暗物质。基于这些，我们研究了通过对SMBH Sgr A*和低质量X射线双星XTE J1118+480中的sBH周围区域进行伽马射线观测来探测这些亚TeV暗物质场景的前景。
英文摘要
We investigate the impact of a dark matter density spike surrounding the Milky Way's supermassive black hole (SMBH) on the detectability of Singlino-dominated neutralino dark matter within the Next-to-Minimal Supersymmetric Standard Model (NMSSM). Similar density enhancements, or mini-spikes, around stellar-mass black holes (sBHs), have also been considered. Such a dark matter (DM) candidate typically produces weak indirect detection signals in conventional dark matter halos. Additionally, a Singlino-like lightest supersymmetric particle (LSP) is very difficult to probe at the LHC or through direct DM searches. Furthermore, a Singlino-like LSP with an almost degenerate Higgsino NLSP can produce an observable inelastic DD signal and is compatible with the anomalous high-recoil event recently reported by the LZ collaboration. Keeping these in consideration, we examine the prospects for detecting these sub-TeV dark matter scenarios through gamma-ray observations of the regions surrounding the SMBH Sgr A$^\ast$ and the sBH in the low-mass X-ray binary XTE J1118+480.
Comments28 pages, 10 figures, 4 tables, Improved discussion on inelastic scattering of Singlino DM
