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arXiv 2405.02482hep-phastro-ph.CO
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低温探测器中的太阳中微子

Solar Neutrinos in Cryogenic Detectors

A. Bento, A. Bertolini, L. Canonica, S. Di Lorenzo, F. Dominsky, N. Ferreiro Iachellini, D. Fuchs, A. Garai, D. Hauff, A. Langenkämper, M. Mancuso, B. Mauri, F.… 展开作者

A. Bento, A. Bertolini, L. Canonica, S. Di Lorenzo, F. Dominsky, N. Ferreiro Iachellini, D. Fuchs, A. Garai, D. Hauff, A. Langenkämper, M. Mancuso, B. Mauri, F. Petricca, F. Pröbst, F. Pucci, L. Stodolsky

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12 pages, 16 figures
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AI总结：

本文研究低温固态实验中太阳中微子CEνNS信号，分析pp、$^{7}$Be和CNO中微子通量灵敏度，并表明eV级阈值、吨年曝光量的CaWO$_{4}$或Al$_{2}$O$_{3}$实验可在中微子地板中发现暗物质信号。

摘要：

相干弹性中微子-原子核散射（CEνNS）在暗物质-原子核弹性散射搜寻中构成不可约背景，通常被称为中微子地板。随着直接暗物质搜寻实验的灵敏度不断提高并进入迄今尚未探索的区域，它们面临接近这一中微子地板的挑战。因此，精确描述CEνNS信号对于未来暗物质搜寻的背景描述至关重要。在本工作中，我们讨论在低阈值、高曝光量的低温固态实验中探测中微子的情形，这些实验针对低质量暗物质搜寻进行了优化。所考虑的能量范围完全由太阳中微子主导。在没有任何暗物质事件的情况下，我们将太阳中微子视为主要的感兴趣信号。我们表明，可以实现对不同产生机制的中微子通量的灵敏度。特别是，我们研究了pp中微子和$^{7}$Be中微子以及CNO中微子通量的灵敏度。此外，我们研究了在太阳中微子背景存在的情况下，不同实验场景对暗物质信号的灵敏度，这些场景由三个参数定义：靶材料、能量阈值和曝光量。我们表明，使用CaWO$_{4}$或Al$_{2}$O$_{3}$靶材、能量阈值为$\mathcal{O}$(eV)且曝光量为$\mathcal{O}$(tonne-years)的实验，具有在中微子地板中发现暗物质相互作用截面的潜力。

英文摘要：

Coherent elastic neutrino-nucleus scattering (CE$ν$NS) poses an irreducible background in the search for dark matter-nucleus elastic scatterings, which is commonly known as the neutrino floor. As direct dark matter search experiments keep improving their sensitivity into so far unexplored regions, they face the challenge of approaching this neutrino floor. A precise description of the CE$ν$NS signal is therefore crucial for the description of backgrounds for future DM searches. In this work we discuss the scenario of detecting neutrinos in low-threshold, high-exposure cryogenic solid state experiments optimized for the search of low-mass dark matter. The energy range considered is completely dominated by solar neutrinos. In absence of any dark matter events, we treat solar neutrinos as the main signal of interest. We show that sensitivity to the flux of neutrinos from different production mechanisms can be achieved. In particular we investigate the sensitivity to the flux of pp and $^{7}$Be neutrinos, as well as CNO neutrinos. Furthermore, we investigate the sensitivity to dark matter signals in the presence of a solar neutrino background for different experimental scenarios, which are defined by three parameters: the target material, the energy threshold and the exposure. We show that experiments with thresholds of $\mathcal{O}$(eV) and exposures of $\mathcal{O}$(tonne-years), using CaWO$_{4}$ or Al$_{2}$O$_{3}$ targets, have discovery potential for dark matter interaction cross sections in the neutrino floor.

机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。

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