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首页> 外文期刊>Physical review, D >Solar neutrino detection in liquid xenon detectors via charged-current scattering to excited states
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Solar neutrino detection in liquid xenon detectors via charged-current scattering to excited states

机译：通过充电电流散射到激发态的液体氙探测器中的太阳能探测

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We investigate the prospects for real-time detection of solar neutrinos via the charged-current neutrino-nucleus scattering process in liquid xenon time projection chambers. We use a nuclear shell model, benchmarked with experimental data, to calculate the cross sections for populating specific excited states of the cesium nuclei produced by neutrino capture on Xe 131 and Xe 136 . The shell model is further used to compute the decay schemes of the low-lying 1 + excited states of Cs 136 , for which there is sparse experimental data. We explore the possibility of tagging the characteristic deexcitation γ rays/conversion electrons using two techniques: spatial separation of their energy deposits using event topology and their time separation using delayed coincidence. The efficiencies in each case are evaluated within a range of realistic detector parameters. We find that the topological signatures are likely to be dominated by radon backgrounds, but that a delayed-coincidence signature from long-lived states predicted in Cs 136 may enable background-free detection of CNO neutrino interactions in next-generation experiments with smaller uncertainty than current measurements. We also estimate the sensitivity as a function of exposure for detecting the solar-temperature-induced line shift in Be 7 neutrino emission, which may provide a new test of solar models.
机译：我们研究用于经由在液体氙时间投影室的充电电流中微子 - 核散射过程太阳中微子的实时检测的前景。我们使用一个核的壳模型，与实验数据为基准，计算出的横截面用于填充由Xe的131和Xe 136中微子捕获产生的铯核的特定激发态。壳模型还用于计算铯136的低洼1个+激发态，为此，有稀疏的实验数据的衰减方案。我们探讨使用两种技术来标记所述特性去激发γ射线/转换电子的可能性：使用事件拓扑和使用延迟符合他们的时间间隔它们的能量沉积的空间分离。在每种情况下效率被一个范围的现实检测器的参数范围内进行评价。我们发现，拓扑特征很可能是由氡背景为主，但在铯136预测寿州延迟重合签名可以使CNO中微子在下一代实验相互作用的无背景检测具有小于不确定性电流测量。我们还估计灵敏度曝光量函数，用于检测在成为7中微子发射太阳能温度引起的线位移，这可以提供太阳能模型的一个新的测试。

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