论文标题
非标准中微子自我相互作用和磁矩对集体主要中微子振荡的影响
Effects of nonstandard neutrino self-interactions and magnetic moment on collective Majorana neutrino oscillations
论文作者
论文摘要
我们得出了有效的哈密顿人，描述了主要中微子的集体振荡，并具有过渡磁矩，从而允许存在标量和伪级非标准中微子自我相互作用（NSSIS）。使用这种哈密顿量，我们分析了在核心爆发的超新星环境中的集体振荡的新风味不稳定性通道，该通道在存在的情况下开放了一个小但非零的中微子磁矩。事实证明，与文献中的某些主张相反，在最小扩展的标准模型（即没有NSSIS）中，在线性顺序内不会出现新的不稳定，它们也不会在中微子味中的任何可观察到的特征中产生任何可观察到的特征，至少在磁性时刻，最多可达$ 10^{ - 15^{ - 15}^{-15} $ $ text $ text $ texts $ texts $ bextement usem and bextect。 $ 10^{12}〜$高斯。另一方面，在NSSIS的存在下，出现了新的快速和缓慢的不稳定性混合中微子和抗肿瘤，甚至出现在光谱中，即使是在$ 10^{ - 24} 〜μ_ {\ text {b}} $的微小磁性时刻出现的，导致了光谱和非标准的光谱图。我们研究了集体振荡对这些振荡的敏感性，详细介绍了NSSSI诱导的不稳定性，并讨论了触发NSSI耦合的可观察性。
We derive the effective Hamiltonian describing collective oscillations of Majorana neutrinos with a transition magnetic moment, allowing for the presence of scalar and pseudoscalar nonstandard neutrino self-interactions (NSSIs). Using this Hamiltonian, we analyze new flavor instability channels of collective oscillations in a core-collapse supernova environment that open up in the presence of a small but nonzero neutrino magnetic moment. It turns out that, contrary to certain claims in the literature, within the minimally extended Standard Model (i.e., without NSSIs), no new instabilities arise within the linear order, nor do they produce any observable signatures in the neutrino flavor-energy spectra, at least for magnetic moments up to $10^{-15}~μ_{\text{B}}$ and quite realistic fields of the order of $10^{12}~$Gauss. On the other hand, in the presence of NSSIs, new fast and slow instabilities mixing neutrinos and antineutrinos appear, which show up in the spectra even for tiny magnetic moments of the order of $10^{-24}~μ_{\text{B}}$, leading to considerable distortions of the spectra and nonstandard spectral splits. We study sensitivity of collective oscillations to these, NSSI-induced instabilities in detail and discuss the observability of the NSSI couplings triggering them.
