Response of CsI[Na] to nuclear recoils: Impact on coherent elastic neutrino-nucleus scattering
Response of CsI[Na] to nuclear recoils: Impact on coherent elastic neutrino-nucleus scattering
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DOI：
10.1103/physrevd.100.033003
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发表时间：
2019-07
影响因子：
5
通讯作者：
J. Collar;A. Kavner;Christopher Murphy Lewis
中科院分区：
文献类型：
--
作者：
J. Collar;A. Kavner;Christopher Murphy Lewis
提出了一种新的测量 CsI[Na] 低能核反冲猝灭因子的方法。重新审视过去的测量结果，识别并纠正一些系统效应。由此产生的全局数据由基于物理的模型很好地描述，该模型用于通过该材料中的离子产生闪烁，这与现象学的考虑相一致。相对于 COHERENT 合作最初采用的与能量无关的淬灭因子作为折衷方案，新模型的不确定性降低了四倍。对于 CE$\nu$NS 的第一次测量，与标准模型预测的一致性显着提高。我们通过 CE$\nu$NS 实验强调猝灭因子对寻找新物理的关键影响。
A new measurement of the quenching factor for low-energy nuclear recoils in CsI[Na] is presented. Past measurements are revisited, identifying and correcting several systematic effects. The resulting global data are well-described by a physics-based model for the generation of scintillation by ions in this material, in agreement with phenomenological considerations. The uncertainty in the new model is reduced by a factor of four with respect to an energy-independent quenching factor initially adopted as a compromise by the COHERENT collaboration. A significantly improved agreement with Standard Model predictions for the first measurement of CE$\nu$NS is generated. We emphasize the critical impact of the quenching factor on the search for new physics via CE$\nu$NS experiments.