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arXiv 2007.05517astro-ph.COhep-ph
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类轴子粒子对XENON1T和天体物理数据的整体拟合

Global fits of axion-like particles to XENON1T and astrophysical data

Peter Athron, Csaba Balázs, Ankit Beniwal, J. Eliel Camargo-Molina, Andrew Fowlie, Tomás E. Gonzalo, Sebastian Hoof, Felix Kahlhoefer, David J. E. Marsh, Markus… 展开作者

Peter Athron, Csaba Balázs, Ankit Beniwal, J. Eliel Camargo-Molina, Andrew Fowlie, Tomás E. Gonzalo, Sebastian Hoof, Felix Kahlhoefer, David J. E. Marsh, Markus Tobias Prim, Andre Scaffidi, Pat Scott, Wei Su, Martin White, Lei Wu, Yang Zhang

摘要:

XENON1T实验中观察到的过量电子反冲事件被解释为类轴子粒子(ALP)的潜在信号,要么产生于太阳,要么构成银河系暗物质晕的一部分。这也被解释为实验中微量氚的结果。我们认为太阳和暗物质ALP假说的证据相结合的XENON1T数据和多个天体物理探测器,包括水平支星,红巨星,和白矮星。我们简要地讨论ALP衰变和超新星冷却的影响。虽然不同的数据集是在明确的紧张局势的情况下,太阳ALP,所有的测量可以同时容纳的情况下,暗物质ALP的次主导部分。然而,这种解决方案需要调整几个先验未知参数,因此对于我们的先验选择,贝叶斯分析显示,对于XENON1T超过背景假设的ALP解释没有强烈的偏好。

英文摘要:

The excess of electron recoil events seen by the XENON1T experiment has been interpreted as a potential signal of axion-like particles (ALPs), either produced in the Sun, or constituting part of the dark matter halo of the Milky Way. It has also been explained as a consequence of trace amounts of tritium in the experiment. We consider the evidence for the solar and dark-matter ALP hypotheses from the combination of XENON1T data and multiple astrophysical probes, including horizontal branch stars, red giants, and white dwarfs. We briefly address the influence of ALP decays and supernova cooling. While the different datasets are in clear tension for the case of solar ALPs, all measurements can be simultaneously accommodated for the case of a sub-dominant fraction of dark-matter ALPs. Nevertheless, this solution requires the tuning of several a priori unknown parameters, such that for our choices of priors a Bayesian analysis shows no strong preference for the ALP interpretation of the XENON1T excess over the background hypothesis.

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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