Antideuteron limits on decaying dark matter with a tuned formation model
Antideuteron limits on decaying dark matter with a tuned formation model
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DOI：
10.1103/physrevd.89.103504
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发表时间：
2014-02
影响因子：
5
通讯作者：
L. Dal;A. Raklev
中科院分区：
文献类型：
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作者：
L. Dal;A. Raklev
我们以具有三线性R宇称破坏(RPV)算符的超对称模型中的引力子为例，研究了衰变暗物质中反重离子的产生。与宇宙射线传播模型中的不确定性相比，用于反氘核形成的模型在预测通量中引入了很大的不确定性。我们通过调整蒙特卡罗模拟中的强子化和聚合性参数来改进形成模型，以更好地再现与反重子产生相关的强子谱。根据目前对通量的限制以及AMS-II和GAP实验的未来前景，我们设定了作为引力质量函数的RPV耦合的限制。
We investigate the production of antideuterons from decaying dark matter, using gravitinos in supersymmetric models with trilinear R-parity violating (RPV) operators as an example. The model used for antideuteron formation is shown to induce large uncertainties in the predicted flux, comparable to uncertainties from cosmic-ray propagation models. We improve on the formation model by tuning hadronization and coalesence parameters in Monte Carlo simulations to better reproduce the hadron spectra relevant for antideuteron production. In light of current bounds on fluxes and future prospects from the AMS-II and GAPS experiments we set limits on RPV couplings as a function of the gravitino mass.