Department of Physics, Harvard University, Cambridge, Massachusetts 02138, USA.
Phys Rev Lett. 2023 Feb 17;130(7):071803. doi: 10.1103/PhysRevLett.130.071803.
We propose a new beam-dump experiment at a future TeV-scale muon collider. A beam dump would be an economical and effective way to increase the discovery potential of the collider complex in a complementary regime. In this Letter, we consider vector models such as the dark photon and L_{μ}-L_{τ} gauge boson as new physics candidates and explore which novel regions of parameter space can be probed with a muon beam dump. We find that for the dark photon model, we gain sensitivity in the moderate mass (MeV-GeV) range at both higher and lower couplings compared to existing and proposed experiments, and gain access to previously untouched areas of parameter space of the L_{μ}-L_{τ} model.
我们提出了一种在未来 TeV 规模μ子对撞机上进行的新型束流dump 实验方案。束流dump 将是一种经济有效的方法，可以在互补的区域内增加对撞机复合体的发现潜力。在这封信中，我们考虑了像暗光子和 L_{μ}-L_{τ}规范玻色子这样的矢量模型作为新物理候选，并探索了μ子束流dump 可以探测到哪些新的参数空间区域。我们发现，对于暗光子模型，与现有的和提出的实验相比，我们在更高和更低的耦合下，在中等质量（MeV-GeV）范围内获得了灵敏度，并且可以进入 L_{μ}-L_{τ}模型以前未触及的参数空间区域。
