四面受限:圈图暗物质与中微子质量的全局拟合
Boxed in from all sides: a global fit to loopy dark matter and neutrino masses
AI总结:
研究通过单圈相互作用与中微子耦合的暗物质模型,媒介子同时产生中微子质量,通过全局拟合约束参数,发现暗物质质量范围及亚GeV质量偏好以解释最重中微子质量。
摘要:
我们研究了一个暗物质模型,该模型通过与中微子的单圈相互作用与标准模型耦合,其中媒介子粒子也产生中微子质量。我们进行了全局拟合,结合了暗物质遗迹丰度、原初核合成、中微子质量、对撞机和间接探测约束。得益于圈图抑制,允许大耦合,我们发现模型参数在各方面都受到约束。允许的暗物质质量从10 MeV到几TeV,但为了使模型也能解释最重的中微子质量,亚GeV质量是首选。尽管我们的结果一次只对单个中微子质量本征态有效,但模型和方法可推广到完整的3味情况。
英文摘要:
We investigate a dark matter model that couples to the standard model through a one-loop interaction with neutrinos, where the mediator particles also generate neutrino masses. We perform a global fit that incorporates dark matter relic abundance, primordial nucleosynthesis, neutrino mass, collider and indirect detection constraints. Thanks to the loop suppression, large couplings are allowed, and we find that the model parameters are constrained on all sides. Dark matter masses from 10 MeV to a few TeV are allowed, but sub-GeV masses are preferred for the model to also account for the heaviest neutrino mass. Though our results are valid for a single neutrino mass eigenstate at a time, the model and methods are generalizable to the full 3-flavor case.
机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。