DarkSUSY 6: an advanced tool to compute dark matter properties numerically
DarkSUSY 6: an advanced tool to compute dark matter properties numerically
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DOI：
10.1088/1475-7516/2018/07/033
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发表时间：
2018-02
影响因子：
6.4
通讯作者：
T. Bringmann;Torsten Edsjö;P. Gondolo;P. Ullio;L. Bergström
中科院分区：
文献类型：
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作者：
T. Bringmann;Torsten Edsjö;P. Gondolo;P. Ullio;L. Bergström
暗物质的性质仍然是关键的科学问题之一。弱相互作用大质量粒子（WIMP）是最有动力的粒子物理学候选者之一，可以通过采用标准大爆炸热力学来解释测量到的暗物质密度。例子包括最轻的超对称粒子，尽管许多替代粒子被建议作为暗物质难题的解决方案。我们在这里介绍广泛使用的 DarkSUSY 软件包的全新版本，它允许以数值方式计算此类暗物质粒子的属性。利用DarkSUSY 6，人们可以准确预测来自暗物质的各种天体物理信号，例如低背景计数实验中的直接探测率以及通过来自银河晕的反质子、反氘核、伽马射线和正电子或来自地球中心或太阳的高能中微子的间接探测信号。对于像 WIMP 这样的热产生暗物质，我们提供了高精度工具来计算当今宇宙中的遗迹密度，以及最小暗物质原晕的大小。此外，该代码允许计算暗物质自相互作用率，这可能会影响暗物质在小宇宙尺度上的分布。与早期版本相比，DarkSUSY 6 引入了许多重要的物理改进和扩展。然而，此版本最基本的新功能是代码已完全重新组织并形成高度模块化和灵活的形状。因此，不同预先实现的暗物质候选者之间的切换变得直接，就像添加新的 WIMP 或非 WIMP 粒子模型或以完全用户指定的方式替换任何给定功能一样。在本文中，我们描述了计算机包背后的物理原理，以及 DarkSUSY 这一重大修订版的主要结构和原理。详细的手册随公开发布一起提供，网址为 www.darksusy.org。
The nature of dark matter remains one of the key science questions. Weakly Interacting Massive Particles (WIMPs) are among the best motivated particle physics candidates, allowing to explain the measured dark matter density by employing standard big-bang thermodynamics. Examples include the lightest supersymmetric particle, though many alternative particles have been suggested as a solution to the dark matter puzzle. We introduce here a radically new version of the widely used DarkSUSY package, which allows to compute the properties of such dark matter particles numerically. With DarkSUSY 6 one can accurately predict a large variety of astrophysical signals from dark matter, such as direct detection rates in low-background counting experiments and indirect detection signals through antiprotons, antideuterons, gamma rays and positrons from the Galactic halo, or high-energy neutrinos from the center of the Earth or of the Sun. For thermally produced dark matter like WIMPs, high-precision tools are provided for the computation of the relic density in the Universe today, as well as for the size of the smallest dark matter protohalos. Furthermore, the code allows to calculate dark matter self-interaction rates, which may affect the distribution of dark matter at small cosmological scales. Compared to earlier versions, DarkSUSY 6 introduces many significant physics improvements and extensions. The most fundamental new feature of this release, however, is that the code has been completely re-organized and brought into a highly modular and flexible shape. Switching between different pre-implemented dark matter candidates has thus become straight-forward, just as adding new—WIMP or non-WIMP—particle models or replacing any given functionality in a fully user-specified way. In this article, we describe the physics behind the computer package, along with the main structure and philosophy of this major revision of DarkSUSY. A detailed manual is provided together with the public release at www.darksusy.org.