论文标题
来自高能天体物理中微子的秘密中微子相互作用的界限
Bounds on secret neutrino interactions from high-energy astrophysical neutrinos
论文作者
论文摘要
中微子为超出标准模型的物理提供了一个窗口。特别是，具有TEV-PEV能量的高能量天体中微子可能会提供新的“秘密”中微子 - 中微子 - 中微子相互作用，这些相互作用比普通的弱相互作用更强。在宇宙学距离的传播过程中，高能中微子可以通过秘密相互作用与宇宙中微子背景相互作用，从而在其观察到的能量分布中发展了特征能量依赖性特征。我们首次使用6年公开可用的ICECUBE高能量起始事件（HESE），首次寻找高能天体中微子的弥漫性通量中的秘密中微子相互作用的签名。我们没有发现秘密中微子相互作用的显着证据，而是在新介体的耦合强度上，在1-100 MEV的介体质量范围内将竞争性上限限制。
Neutrinos offer a window to physics beyond the Standard Model. In particular, high-energy astrophysical neutrinos, with TeV-PeV energies, may provide evidence of new, "secret" neutrino-neutrino interactions that are stronger than ordinary weak interactions. During their propagation over cosmological distances, high-energy neutrinos could interact with the cosmic neutrino background via secret interactions, developing characteristic energy-dependent features in their observed energy distribution. For the first time, we look for signatures of secret neutrino interactions in the diffuse flux of high-energy astrophysical neutrinos, using 6 years of publicly available IceCube High Energy Starting Events (HESE). We find no significant evidence for secret neutrino interactions, but place competitive upper limits on the coupling strength of the new mediator through which they occur, in the mediator mass range of 1-100 MeV.
