Protvino到ORCA实验的优化配置
Optimal configuration of Protvino to ORCA experiment for hierarchy and non-standard interactions
摘要：
本文研究了Protvino对ORCA（P2O）实验在三味方案下的层次灵敏度以及对中微子传播中非标准相互作用（NSI）的灵敏度。由于P2O的最大可能基线长度为2595 km，预计P2O对中微子质量等级和NSI参数具有很强的敏感性。在我们的研究中，我们表明，即使P2O的最小配置的外观通道事件的数量比DUNE更高，但由于大的背景事件，P2O的层次敏感性仍然小于DUNE。我们的研究结果表明，为0.46的背景减少因子和$4\%$的外观通道背景系统归一化误差，P2O的层次灵敏度成为相当于DUNE为$δ_{\rm CP} = 195^\circ$。我们将这种P2O配置称为优化的P2O。关于NSI的研究，我们发现，当分析中包括$ε_{eτ}$和$ε_{eμ}$时，DUNE对$ε_{eμ}$（$ε_{eτ}$）的灵敏度与优化的P2O相似（更好）。我们的研究结果表明，在NSI的存在下，相对于标准的三种风味的情况下，层次结构的敏感性的变化，是更高的P2O相比，DUNE。此外，存在NSI时的层级灵敏度低于（高于）$δ_{\rm CP} = 270^\circ (90^\circ)$的标准三味场景中的灵敏度。重要的是要注意，对于$δ_{\rm CP}$的当前有利值，优化的P2O的层次灵敏度并没有明显好于DUNE，$δ_{\rm CP}$是在标准三种风味和存在NSI的情况下通过全局分析获得的$180^\circ < δ_{\rm CP} < 360^\circ$。
英文摘要：
In this paper, we study the hierarchy sensitivity of Protvino to ORCA (P2O) experiment in three flavour scenario as well as its sensitivity to non-standard interactions (NSI) in neutrino propagation. Because of the largest possible baseline length of 2595 km, P2O is expected to have strong sensitivity towards neutrino mass hierarchy and NSI parameters. In our study, we show that even though the number of appearance channel events for the minimal configuration of P2O are higher compared to DUNE, still the hierarchy sensitivity of P2O is less than DUNE because of large background events. Our results show that for a background reduction factor of 0.46 and appearance channel background systematic normalization error of $4\%$, the hierarchy sensitivity of P2O becomes equivalent of DUNE for $δ_{\rm CP} = 195^\circ$. We call this configuration of P2O as optimized P2O. Regarding the study of NSI, we find that, for $ε_{eμ}$ ($ε_{eτ}$) sensitivity of DUNE is similar (better) as compared to optimized P2O when both $ε_{eμ}$ and $ε_{eτ}$ are included in the analysis. Our results show that in presence of NSI, the change of hierarchy sensitivity with respect to standard three flavor scenario, is higher in P2O as compared to DUNE. Further, hierarchy sensitivity in presence of NSI is lower (higher) than sensitivity in the standard three flavour scenario for $δ_{\rm CP} = 270^\circ (90^\circ)$. It is important to note that hierarchy sensitivity of optimized P2O does not get significantly better than DUNE for the current favourable values of $δ_{\rm CP}$ which is $180^\circ < δ_{\rm CP} < 360^\circ$ as obtained by the global analysis in both standard three flavour and in presence of NSI.
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。
