论文标题
相干CSI和LAR数据的合并分析的物理意义
Physics implications of a combined analysis of COHERENT CsI and LAr data
论文作者
论文摘要
相干弹性中微子核散射的观察为许多物理机会打开了窗口。通过使用两个不同目标的第一个CSI,然后是氩气来衡量此过程。最近,连贯的协作通过更高的统计数据和对系统学的了解更新了CSI数据分析。在这里,我们对完整的CSI数据进行详细的统计分析,并将其与先前的氩结果结合使用。从标准模型的测试到新的物理探针,我们讨论了各种各样的含义。在我们的分析中,我们考虑了与效率和中微子通量的时机分布相关的实验不确定性,这使我们的结果相当强大。特别是,我们更新了CSI和氩气中的弱混合角度和中子均方根电荷半径的先前测量值。我们还更新了有关新物理场景的限制,包括中微子非标准相互作用和中微子广义相互作用的最一般情况,以及光介体的可能性。最后,还检查了对中微子电磁特性的约束,包括转化为无菌中微子状态。在许多情况下,纳入最近的CSI数据会导致界限的显着改善。
The observation of coherent elastic neutrino nucleus scattering has opened the window to many physics opportunities. This process has been measured by the COHERENT Collaboration using two different targets, first CsI and then argon. Recently, the COHERENT Collaboration has updated the CsI data analysis with a higher statistics and an improved understanding of systematics. Here we perform a detailed statistical analysis of the full CsI data and combine it with the previous argon result. We discuss a vast array of implications, from tests of the Standard Model to new physics probes. In our analyses we take into account experimental uncertainties associated to the efficiency as well as the timing distribution of neutrino fluxes, making our results rather robust. In particular, we update previous measurements of the weak mixing angle and the neutron root mean square charge radius for CsI and argon. We also update the constraints on new physics scenarios including neutrino nonstandard interactions and the most general case of neutrino generalized interactions, as well as the possibility of light mediators. Finally, constraints on neutrino electromagnetic properties are also examined, including the conversion to sterile neutrino states. In many cases, the inclusion of the recent CsI data leads to a dramatic improvement of bounds.