纳米尺度下慢中子非牛顿力的实验研究
Experimental Search for Non-Newtonian Forces in the Nanometer Scale with Slow Neutrons
摘要：
本文通过测量6 π中子与氙气原子散射的角分布，得到了新的类引力短程相互作用的改进极限，其中散射势采用Yukawa型参数化模型。我们已经收集了大约$1.4 \times 10^8$小角中子散射事件。这些数据被解释为没有新的力的证据，并显示在$0.3$ nm至$9$ nm的相互作用范围内的耦合强度的上限得到改善。这些改进的约束也被解释为一个模型的新的限制，在该模型中，新的力的电荷被表示为重子数和轻子数的线性组合。
英文摘要：
Improved limits for new gravity-like short-range interactions, in which a scattering potential is modeled by the Yukawa-type parametrization, have been obtained by measuring the angular distribution of 6 Å neutrons scattering from atomic xenon gas. We have collected approximately $1.4 \times 10^8$ small-angle neutron scattering events. The data are interpreted as no evidence of new forces and show improved upper limits on the coupling strength in the interaction range of $0.3$ nm to $9$ nm. These improved constraints are also interpreted as new limits for a model, in which a charge of the new forces is expressed as a linear combination of the baryon number and the lepton number.
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