驾驭暗物质波:来自 LISA Pathfinder 的广义暗光子新限制
Riding the dark matter wave: Novel limits on general dark photons from LISA Pathfinder
AI总结:
本研究提出利用 LISA Pathfinder 辅助通道数据搜索暗光子暗物质,通过检验质量与航天器间的差分运动测量,在特定质量范围内提供了世界领先的参数限制。
摘要:
我们指出,利用 LISA Pathfinder 的辅助通道数据,对规范重子($B$)和重子减轻子($B-L$)暗光子暗物质(DPDM)进行参数化改进搜索的可能性。具体而言,我们使用检验质量(TMs)与航天器(SC)之间差分运动的测量,其灵敏度几乎与两个 TMs 之间的追踪一样高。TMs 和 SC 由不同材料制成,因此在 $B-L$ 和 $B$ 上具有不同的荷质比。因此,周围的 DPDM 场会诱导近乎恒定频率的相对加速度。对于 $B-L$ 的情况,我们发现 LISA Pathfinder 能够约束此前未被探索的参数空间,在质量范围 $4\cdot 10^{-19}\\,\text{eV}<m<3\cdot 10^{-17}\\,\text{eV}$ 内提供世界领先的限制。该限制也可轻松重新应用于源自规范 SM 其他全局对称性的暗光子。
英文摘要:
We note the possibility to perform a parametrically improved search for gauged baryon ($B$) and baryon minus lepton ($B-L$) Dark Photon Dark Matter (DPDM) using auxiliary channel data from LISA Pathfinder. In particular we use the measurement of the differential movement between the test masses (TMs) and the space craft (SC) which is nearly as sensitive as the tracking between the two TMs. TMs and SC are made from different materials and therefore have different charge-to-mass ratios for both $B-L$ and $B$. Thus, the surrounding DPDM field induces a relative acceleration of nearly constant frequency. For the case of $B-L$, we find that LISA Pathfinder can constrain previously unexplored parameter space, providing the world leading limits in the mass range $4\cdot 10^{-19}\,\text{eV}<m<3\cdot 10^{-17}\,\text{eV}$. This limit can easily be recast also for dark photons that arise from gauging other global symmetries of the SM.
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