论文标题
在质子梁储量光谱仪处搜索粘液性颗粒的新搜索
New Searches for Muonphilic Particles at Proton Beam Dump Spectrometers
论文作者
论文摘要
我们引入了一种新的搜索策略，可使用以Fermilab的SpinQuest实验建模的质子束光谱仪明显腐烂的粘液性颗粒。在此设置中，$ {\ sim} $ 100 GEV主质子光束会撞击厚固定的目标，并产生次级MUON光束。当这些兆子横穿目标材料时，它们会散射核，并可以辐射产生假设的哑态颗粒作为初始状态和最终状态辐射。如果这样的新状态腐烂到二菱量，则可以用浸入特斯拉尺度磁场的下游光谱仪来测量它们的组合不变质量。 For a representative setup with $3\times 10^{14}$ muons on target with typical energies of $\sim$ 20 GeV, a $15\%$ invariant mass resolution, and an effective 100 cm target length, this strategy can probe the entire parameter space for which $\sim$ 200 MeV -- GeV scalar particles resolve the muon $g-2$ anomaly.我们在SpinQuest实验中对这些标量粒子提出了敏感性，在该实验中不需要其他硬件，并且可以在主要的核物理计划中寄生搜索。具有优化光束和检测器构型的未来质子束漏斗实验可能具有更大的灵敏度。
We introduce a new search strategy for visibly decaying muonphilic particles using a proton beam spectrometer modeled after the SpinQuest experiment at Fermilab. In this setup, a ${\sim}$100 GeV primary proton beam impinges on a thick fixed target and yields a secondary muon beam. As these muons traverse the target material, they scatter off nuclei and can radiatively produce hypothetical muonphilic particles as initial- and final-state radiation. If such new states decay to dimuons, their combined invariant mass can be measured with a downstream spectrometer immersed in a Tesla-scale magnetic field. For a representative setup with $3\times 10^{14}$ muons on target with typical energies of $\sim$ 20 GeV, a $15\%$ invariant mass resolution, and an effective 100 cm target length, this strategy can probe the entire parameter space for which $\sim$ 200 MeV -- GeV scalar particles resolve the muon $g-2$ anomaly. We present sensitivity to these scalar particles at the SpinQuest experiment where no additional hardware is needed and the search could be parasitically executed within the primary nuclear physics program. Future proton beam dump experiments with optimized beam and detector configurations could have even greater sensitivity.
