Constraints on heavy dark matter annihilation and decay from electron and positron cosmic ray spectra
Constraints on heavy dark matter annihilation and decay from electron and positron cosmic ray spectra
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DOI：
10.21468/scipostphysproc.12.035
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发表时间：
2023-07
影响因子：
--
通讯作者：
H. Motz
中科院分区：
文献类型：
--
作者：
H. Motz
暗物质（DM）的湮灭或衰变可能有助于电子和正电子宇宙射线通量，允许从其测量中限制DM参数。CALET直接测量电子+正电子宇宙射线的能谱，直到TeV区域，这对研究重DM最重要，而AMS-02提供TeV范围以下的正电子谱。DM湮灭和衰变到TeV质量范围内的限制已经从两个数据集与天体物理背景模型，包括作为正电子过剩的起源和个别附近的超新星遗迹源的恒星的组合分析。
Annihilation or decay of dark matter (DM) could contribute to the electron and positron cosmic-ray flux, allowing for constraints on DM parameters from its measurement. CALET is directly measuring the energy spectrum of electron+positron cosmic rays up into the TeV region most important for studying heavy DM, while AMS-02 provides a positron-only spectrum below the TeV range. Limits on DM annihilation and decay well into the TeV mass range have been derived from a combined analysis of both data-sets with an astrophysical background model including pulsars as the origin of the positron excess and individual nearby supernova remnant sources.