论文标题
在Essnusb探索无形的中微子衰变
Exploring invisible neutrino decay at ESSnuSB
论文作者
论文摘要
我们探索了无形的中微子衰变，其中激烈的活跃中微子状态衰减到一个轻微的无菌中微子状态，并对ESSNUSB实验设置进行了对两个基线选项，$ 540〜 $ km和$ 360〜 $ km的比较分析。我们的分析表明，ESSNUSB可以对衰减参数$τ_3/m_3 = 2.64〜（1.68）\ times 10^{ - 11}〜$ s/ev，对于$ 360〜（540）〜$ km的基线选项为$3σ$。 360〜$ km的预期绑定略优于Dune（CC）分析的Dune的相应限制。此外，我们表明，Essnusb发现衰减并精确测量衰减参数的能力比$ 540〜 $ KM的基线选项要好于$ 360〜 $ km。关于$δ_ {\ rm cp} $测量的衰减的影响，我们发现总体而言，在存在衰减的情况下，CP违规发现潜力更好。如果一个人假定数据中的衰减，但理论上没有衰减，则CP精度的变化很大。
We explore invisible neutrino decay in which a heavy active neutrino state decays into a light sterile neutrino state and present a comparative analysis of two baseline options, $540~$km and $360~$km, for the ESSnuSB experimental setup. Our analysis shows that ESSnuSB can put a bound on the decay parameter $τ_3/m_3 = 2.64~(1.68) \times 10^{-11}~$s/eV for the baseline option of $360~(540)~$km at $3 σ$. The expected bound obtained for $360~$km is slightly better than the corresponding one of DUNE for a charged current (CC) analysis. Furthermore, we show that the capability of ESSnuSB to discover decay, and to measure the decay parameter precisely, is better for the baseline option of $540~$km than that of $360~$km. Regarding effects of decay in $δ_{\rm CP}$ measurements, we find that in general the CP violation discovery potential is better in the presence of decay. The change in CP precision is significant if one assumes decay in data but no decay in theory.
