Leptophobic dark matter at neutrino factories
Leptophobic dark matter at neutrino factories
复制标题
中微子工厂的疏疏暗物质
DOI：
--
复制
发表时间：
2014
期刊：
影响因子：
--
通讯作者：
A. Ritz
中科院分区：
文献类型：
--
作者：
B. Batell;P. deNiverville;D. McKeen;M. Pospelov;A. Ritz
高光度固定目标中微子实验为寻找轻、亚GeV暗物质和相关的新力量提供了一个新的机会。我们分析了这些实验通过测量$U(1)_B$重子电流来照亮与标准模型耦合的轻疏疏水暗态的物理范围。当重子矢量是轻的，并且可以衰变为暗物质时，我们发现，在当前束流倾倒配置下的MiniBooNE实验可以将对重子精细结构常数的灵敏度扩展到$\α_B\sim 10^{-6}$。这大大低于目前直接探测实验无法达到的大部分亚GeV质量范围的现有限制。
High-luminosity fixed-target neutrino experiments present a new opportunity to search for light sub-GeV dark matter and associated new forces. We analyze the physics reach of these experiments to light leptophobic dark states coupled to the Standard Model via gauging the $U(1)_B$ baryon current. When the baryonic vector is light, and can decay to dark matter, we find that the MiniBooNE experiment in its current beam-dump configuration can extend sensitivity to the baryonic fine structure constant down to $\alpha_B\sim 10^{-6}$. This is significantly below the existing limits over much of the sub-GeV mass range currently inaccessible to direct detection experiments.