Dark-matter decay as a complementary probe of multicomponent dark sectors.
Dark-matter decay as a complementary probe of multicomponent dark sectors.
复制标题
暗物质衰变作为多组分暗区的补充探针。
DOI：
10.1103/physrevlett.114.051301
复制
发表时间：
2014
影响因子：
8.6
通讯作者：
David Yaylali
中科院分区：
文献类型：
--
作者：
K. Dienes;J. Kumar;B. Thomas;David Yaylali
在暗物质的单组分理论中，暗物质产生、湮灭和散射的 2→2 振幅可以通过各种交叉对称性相互关联。因此，基于这些过程的检测技术是互补的。然而，多组分理论展示了暗物质互补性的另一个方向：暗物质从较重的组分衰变到较轻的组分的可能性。我们讨论了这种新的检测通道如何与其他通道相关联，并证明所出现的增强的互补性可以成为探测和约束此类模型的参数空间的重要组成部分。
In single-component theories of dark matter, the 2→2 amplitudes for dark-matter production, annihilation, and scattering can be related to each other through various crossing symmetries. The detection techniques based on these processes are thus complementary. However, multicomponent theories exhibit an additional direction for dark-matter complementarity: the possibility of dark-matter decay from heavier to lighter components. We discuss how this new detection channel may be correlated with the others, and demonstrate that the enhanced complementarity which emerges can be an important ingredient in probing and constraining the parameter spaces of such models.