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arXiv 1909.07599hep-phhep-ex
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大亚湾217个活日和RENO 500个活日的中微子振荡分析

Neutrino oscillation analysis of 217 live-days of Daya Bay and 500 live-days of RENO

Mario A. Acero, Alexis A. Aguilar-Arevalo, Dairo J. Polo-Toledo

摘要:

我们提出了一个中微子振荡分析的两个特定的数据集,从大亚湾和RENO反应堆中微子实验,旨在研究的振荡参数$\sin^2{2θ}_{13}$和有效质量分裂$Δm^2_{ee}$的精度提高,通过结合两个相对简单的重现分析在文献中。大亚湾的数据来自2011年12月至2012年7月的217天。对于RENO,我们使用了2011年8月至2012年1月期间500个实时日的数据。我们合理地再现了单独分析的结果,包括仅频率分析和频谱分析,为每种情况定义了合适的$χ^2$统计量。最后,我们进行了一个组合的频谱分析和提取更严格的约束的参数,与30-40\%之间的精度提高考虑的个人分析。

英文摘要:

We present a neutrino oscillation analysis of two particular data sets from the Daya Bay and RENO reactor neutrino experiments aiming to study the increase in precision in the oscillation parameters $\sin^2{2θ}_{13}$ and the effective mass splitting $Δm^2_{ee}$ gained by combining two relatively simple to reproduce analyses available in the literature. For Daya Bay the data from 217 days between December 2011 and July 2012 were used. For RENO we used the data from 500 live days between August 2011 and January 2012. We reproduce reasonably well the results of the individual analyses, both, rate-only and spectral, defining a suitable $χ^2$ statistic for each case. Finally, we performed a combined spectral analysis and extract tighter constraints on the parameters, with an improved precision between 30-40\% with respect of the individual analyses considered.

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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