论文标题
Hazma遇到了Herwig4DM：精密伽玛 - 射线，中微子和光线的正电子光谱
Hazma Meets HERWIG4DM: Precision Gamma-Ray, Neutrino, and Positron Spectra for Light Dark Matter
论文作者
论文摘要
我们提出了一个新的开源软件包HAZMA 2，该软件包计算出与间接暗物质搜索光子，中微子和正电子产品产生的准确光谱，并从矢量介导的暗物质歼灭以及旋转的暗物质衰减。跨越两种最先进的代码的有效性机制的工具桥：HAZMA 1，在下面提供了以下精确描述，直到250 MeV约250 MeV和Herwig4DM，基于Vector Meson的主导地位和测量的形式，并准确地符合少数GEV范围。合并代码的适用性扩展到大约1.5 GEV，高于最终状态载体的数量，我们单独计算光子，中微子和正电子的产量的增长极快。我们提供了示例分支比率，粒子光谱和保守的观察性约束，从现有的伽马射线数据中获得了衰减的深色光子暗物质和矢量介导的费米尼暗物质ni灭的良好动机病例。最后，我们将结果与其他适用性范围的边界的其他代码进行了比较。 Hazma 2在GitHub上免费获得。
We present a new open-source package, Hazma 2, that computes accurate spectra relevant for indirect dark matter searches for photon, neutrino, and positron production from vector-mediated dark matter annihilation and for spin-one dark matter decay. The tool bridges across the regimes of validity of two state of the art codes: Hazma 1, which provides an accurate description below hadronic resonances up to center-of-mass energies around 250 MeV, and HERWIG4DM, which is based on vector meson dominance and measured form factors, and accurate well into the few GeV range. The applicability of the combined code extends to approximately 1.5 GeV, above which the number of final state hadrons off of which we individually compute the photon, neutrino, and positron yield grows exceedingly rapidly. We provide example branching ratios, particle spectra and conservative observational constraints from existing gamma-ray data for the well-motivated cases of decaying dark photon dark matter and vector-mediated fermionic dark matter annihilation. Finally, we compare our results to other existing codes at the boundaries of their respective ranges of applicability. Hazma 2 is freely available on GitHub.
