Origin of the tentative AMS antihelium events
Origin of the tentative AMS antihelium events
复制标题
暂定 AMS 反氦事件的起源
DOI：
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
S. Profumo
中科院分区：
文献类型：
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作者：
A. Coogan;S. Profumo
作者(S)：库根，亚当；普罗富莫，斯蒂法诺|摘要：我们证明，国际空间站上使用阿尔法磁谱仪(AMS)试探性地探测到少数反氦事件，原则上可以归因于银河系暗物质的湮灭或衰变，当考虑到导致反核形成的合并过程中的不确定性时。我们表明，假设反氦事件来自暗物质，预测的反质子速率与AMS数据基本一致，与目前可用的约束条件下的反质子速率也是如此。我们认为，暗物质起源可以通过对合并过程的更好限制、对错误识别事件的更好控制以及未来的反重离子数据来测试。
Author(s): Coogan, Adam; Profumo, Stefano | Abstract: We demonstrate that the tentative detection of a few antihelium events with the Alpha Magnetic Spectrometer (AMS) on board the International Space Station can, in principle, be ascribed to the annihilation or decay of Galactic dark matter, when accounting for uncertainties in the coalescence process leading to the formation of antinuclei. We show that the predicted antiproton rate, assuming the antihelium events came from dark matter, is marginally consistent with AMS data, as is the antideuteron rate with current available constraints. We argue that a dark matter origin can be tested with better constraints on the coalescence process, better control of misidentified events, and with future antideuteron data.