Izaguirre Eder, Krnjaic Gordan, Schuster Philip, Toro Natalia
Perimeter Institute for Theoretical Physics, Waterloo, ON N2L 2Y5, Canada.
Phys Rev Lett. 2015 Dec 18;115(25):251301. doi: 10.1103/PhysRevLett.115.251301. Epub 2015 Dec 15.
In this Letter, we determine the present status of sub-GeV thermal dark matter annihilating through standard model mixing, with special emphasis on interactions through the vector portal. Within representative simple models, we carry out a complete and precise calculation of the dark matter abundance and of all available constraints. We also introduce a concise framework for comparing different experimental approaches, and use this comparison to identify important ranges of dark matter mass and couplings to better explore in future experiments. The requirement that dark matter be a thermal relic sets a sharp sensitivity target for terrestrial experiments, and so we highlight complementary experimental approaches that can decisively reach this milestone sensitivity over the entire sub-GeV mass range.
在本信函中，我们确定了通过标准模型混合进行湮灭的亚GeV热暗物质的当前状况，特别强调了通过矢量门户的相互作用。在具有代表性的简单模型中，我们对暗物质丰度以及所有可用限制进行了完整而精确的计算。我们还引入了一个简洁的框架来比较不同的实验方法，并利用这种比较来确定暗物质质量和耦合的重要范围，以便在未来实验中进行更好的探索。暗物质是热遗迹这一要求为地面实验设定了一个严格的灵敏度目标，因此我们强调了互补的实验方法，这些方法能够在整个亚GeV质量范围内决定性地达到这一里程碑式的灵敏度。
