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arXiv 1504.04024astro-ph.COastro-ph.HEhep-ph
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用MeV-Range Gamma-Ray望远镜间接探测暗物质

Indirect Detection of Dark Matter Using MeV-Range Gamma-Ray Telescopes

Kimberly K. Boddy, Jason Kumar

摘要:

天体物理学界正在考虑在1- 100 MeV能量范围内建立各种伽马射线望远镜(包括ACT和GRIPS)的计划,这些望远镜可以填补目前灵敏度方面的所谓“MeV差距”。我们调查的效用,这种探测器的研究低质量的暗物质湮灭或衰变。对于质量低于约140 MeV(280 MeV)并与第一代夸克耦合的湮灭(衰变)暗物质,最终状态将由光子或中性π介子主导,在伽马射线望远镜中产生引人注目的信号。我们确定未来的检测器的运动学允许的最终状态的灵敏度。特别是,我们发现,计划检测器可以提高电流灵敏度,这类模型高达几个数量级。

英文摘要:

The astrophysics community is considering plans for a variety of gamma-ray telescopes (including ACT and GRIPS) in the energy range 1--100 MeV, which can fill in the so-called "MeV gap" in current sensitivity. We investigate the utility of such detectors for the study of low-mass dark matter annihilation or decay. For annihilating (decaying) dark matter with a mass below about 140 MeV (280 MeV) and couplings to first generation quarks, the final states will be dominated by photons or neutral pions, producing striking signals in gamma-ray telescopes. We determine the sensitivity of future detectors to the kinematically allowed final states. In particular, we find that planned detectors can improve on current sensitivity to this class of models by up to a few orders of magnitude.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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