论文标题
COSI的暗物质前景：阿尔卑斯山，PBH和Sub-Gev暗物质
Dark Matter prospects with COSI: ALPs, PBHs and sub-GeV Dark Matter
论文作者
论文摘要
我们研究了新选择的NASA MEV MISS COSI（康普顿光谱仪和成像仪）提供的暗物质的前景。该仪器的设计和优化以检测光谱线，我们表明它提供了一种可直接腐烂或歼灭单色伽马射线的暗物质的可能性。例如，对于轴突状颗粒（阿尔卑斯山）而言，这种情况就是这种情况，后者会腐烂成两个光子。此外，我们表明COSI可以通过测量通过霍金蒸发产生的正电子的511 keV线来实现原始黑洞（PBHS）暗物质的重要进展。我们还概述了搜索连续信号的机会，例如Sub-Gev暗物质歼灭/衰减到瘦素中的预期和PBH蒸发到光子中的机会。我们发现，在这种情况下，COSI也可以改善当前界限。
We study the prospects in the search of dark matter offered by the newly selected NASA MeV mission COSI (Compton Spectrometer and Imager). This instrument is designed and optimized to detect spectral lines, and we show it offers an exquisite possibility to detect dark matter directly decaying or annihilating into monochromatic gamma-rays. This is the case, for example, for axion-like particles (ALPs) which undergo decay into two photons. Furthermore, we show that COSI can lead to important progress in the quest for primordial black holes (PBHs) dark matter, through measurements of the 511 keV line from the positrons produced via Hawking evaporation. We also outline opportunities for the search of continuum signals, such as those expected from sub-GeV dark matter annihilation/decay into leptons and PBH evaporation into photons. We find that also in this case COSI can lead to improvements of current bounds.
