论文标题
探索质子衰变中的中微子
Exploring neutrinos from proton decays catalyzed by GUT monopoles in the Sun
论文作者
论文摘要
我们探索质子衰变中的中微子信号，这些质子在太阳中被肠道单管催化。三种典型的质子衰变模式，$ p \ rightArrow e^++（ρ^0，η，ω...）\rightArrowπ^+ $，$ p \rightArrowμ^+ k^0 $和$ p \ rightArrow \ rightArrow \barν_eπ^+ $已被分析用于Super-kamiokande实验。单极诱导的中微子来自质子衰减产物的相互作用和随后的衰减。为了获得中微子能源光谱，我们使用Geant4软件来模拟高度密集的太阳能中心的子颗粒的传播。发现$ k^0 $可以通过电荷交换过程$ k^0+ p \ rightArrow k^+ n $以及随后的衰减$ k^+ \rightarrowμ^+ v =+ n^+ν_μ$在休息下静止。基于这一有趣的功能，$ p \rightarrowμ^+ k^0 $可以在大多数参数空间的三种衰减模式中具有最佳的发现潜力。此外，我们向三种质子衰变模式的单极通量介绍了超级kamiokande敏感性。
We explore the neutrino signals from proton decays catalyzed by GUT monopoles in the Sun. Three typical proton decay modes, $p \rightarrow e^+ + (ρ^0, η, ω...) \rightarrow π^+$, $p \rightarrow μ^+ K^0$ and $p \rightarrow \barν_e π^+$, have been analyzed for the Super-Kamiokande experiment. The monopole-induced neutrinos arise from interactions and subsequent decays of the proton decay products. To obtain the neutrino energy spectra, we use the Geant4 software to simulate propagations of daughter particles in the highly-dense solar center. It is found that $K^0$ can produce a large amount of 236 MeV monoenergetic $ν_μ$ neutrinos through the charge exchange process $K^0 + p \rightarrow K^+ + n$ and the subsequent decay $K^+ \rightarrow μ^+ ν_μ$ at rest. Based on this interesting feature, $p \rightarrow μ^+ K^0$ can give the best discovery potential among three decay modes for most of the parameter space. In addition, we present the Super-Kamiokande sensitivities to the monopole flux for three proton decay modes.
