Snowmass2021 Cosmic Frontier: The landscape of cosmic-ray and high-energy photon probes of particle dark matter
Snowmass2021 Cosmic Frontier: The landscape of cosmic-ray and high-energy photon probes of particle dark matter
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发表时间：
2022-03
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通讯作者：
T. Aramaki;M. Boezio;J. Buckley;E. Bulbul;P. Doetinchem;F. Donato;J. P. Harding;C. Karwin;J. Kumar;R. K. Leane;S. Matsumoto;J. McEnry;Tom Melia;K. Perez;S. Profumo;D. Salazar-Gallegos;A. Strong;B. Roach;M. Sánchez-Conde;T. Shutt;A. Takada;T. Tanimori;J. Tomsick;Yusuke Watanabe;David A. Williams
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作者：
T. Aramaki;M. Boezio;J. Buckley;E. Bulbul;P. Doetinchem;F. Donato;J. P. Harding;C. Karwin;J. Kumar;R. K. Leane;S. Matsumoto;J. McEnry;Tom Melia;K. Perez;S. Profumo;D. Salazar-Gallegos;A. Strong;B. Roach;M. Sánchez-Conde;T. Shutt;A. Takada;T. Tanimori;J. Tomsick;Yusuke Watanabe;David A. Williams
这份白皮书讨论了对产生光子和宇宙射线的粒子暗物质过程敏感的实验的现状和前景。伽马射线的大部分天空仍然没有探测到能够发现暗物质信号的灵敏度水平。目前运行的GeV-TeV观测站，如费米-LAT、大气切伦科夫望远镜和水切伦科夫探测器阵列，继续瞄准银河系内外几个有希望的暗物质丰富环境。很快，几个新的实验将继续探索，灵敏度提高，特别是天空中的扩展目标。本文回顾了几个伽马射线观测站的近期和长期计划，从MeV能量到数百TeV。同样，已有十年历史的天文台一直并将继续对X射线天空进行监测。即将到来的望远镜将进一步支持搜索，并为来自稀有中微子和轴子-光子转换等的谱线提供新的发现空间。此外，这篇综述还讨论了目前正在运行的宇宙射线探测器和未来实验的前景，这些实验将澄清宇宙辐射中现有的持续异常，并引领可能的新发现。最后，文章最后讨论了需要在对撞机上进行的必要的截面测量，以减少在解释空间中的光子和宇宙射线测量时的重大不确定性。
This white paper discusses the current landscape and prospects for experiments sensitive to particle dark matter processes producing photons and cosmic rays. Much of the gamma-ray sky remains unexplored on a level of sensitivity that would enable the discovery of a dark matter signal. Currently operating GeV-TeV observatories, such as Fermi-LAT, atmospheric Cherenkov telescopes, and water Cherenkov detector arrays continue to target several promising dark matter-rich environments within and beyond the Galaxy. Soon, several new experiments will continue to explore, with increased sensitivity, especially extended targets in the sky. This paper reviews the several near-term and longer-term plans for gamma-ray observatories, from MeV energies up to hundreds of TeV. Similarly, the X-ray sky has been and continues to be monitored by decade-old observatories. Upcoming telescopes will further bolster searches and allow new discovery space for lines from, e.g., sterile neutrinos and axion-photon conversion. Furthermore, this overview discusses currently operating cosmic-ray probes and the landscape of future experiments that will clarify existing persistent anomalies in cosmic radiation and spearhead possible new discoveries. Finally, the article closes with a discussion of necessary cross section measurements that need to be conducted at colliders to reduce substantial uncertainties in interpreting photon and cosmic-ray measurements in space.